ACB-Masterpact

7/22/2019 ACB-Masterpact

1/72

front face1 opening push-button (O)2 closing push-button (I)3 keylock for "connected",

"disconnected" or "test" position4 door interlock5 stored-energy-mechanism charging

handle6 operations counter7 "open" position keylock8 racking handle storage9 functional position indicator:

"connected", "test" and "disconnected"10 controls on fixed chassis (accessible

with cubicle door closed)11 padlocking facilities for "connected",

"disconnected" or "test" position12 stored-energy-mechanism status

indicator

c "charged"

c "discharged"

13 main-contact position indicator

c "OFF" (O);

c "ON" (I).

14 fault-trip indicator/breaker reset buttonLV circuit-breaker: blue figuresEnclosure: red figures

Masterpact: presentation

Masterpact circuit breakers are used toprotect and control low-voltage distributionsystems. They may be installed in main LV

switchboards (incoming units, main andsecondary outgoers). Masterpact is acomplete range offering a large selection ofperformance levels:c ratings from 800 to 6300 A AC,from 1000 to 8000 A DC;c breaking capacity from 40 to 150 kA rms;c operational voltages 690 V AC,1000 V DC.

2 Merlin Gerin

Many versionsc 3 or 4 poles;c fixed or drawout versions;c current-limiting version up to 2500 A;c wide range of control units offeringmultiple functions.

Circuit breakers designed for allapplicationsc 1000 V AC version;c DC version;c anti-corrosion version;c source-changeover version;c merchant-marine and military versions.Masterpact circuit breakers comply with allmajor international standards and meetT2 tropicalisation criteria.

Reduced dimensionsc AC circuit breakers:v a single frame size from 800 to 3200 A,v common height and depth from 800 to6300 A;c DC circuit breakers:v common height and length from 1000 to8000 A for operational voltages of up to 500V DC,v common height and length from 1000 to4000 A for operational voltages greater than500 V DC.

push to reset

I

I1 I2I3

90%

50%

20%

STR 58UE

0.63Io

Ir

0.8

0.51

xIn

90

105%Ir

. 88

.9 .92

.95

.98

1.8

.85

xIo

Imtm

3

4 5

6

8

101.5

2

xIo

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.1

.1.2

on I2t

off

.2

0

Ir fault

tr

Im fault

tm

I

faultIh

th

t

i

test

+ S

T+

T

F

Ihth

400

500600

800

1000

1200

250

320

A

.3

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.2

.1

.2

on I2

t off

.3

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I

off2

xIn

Ir:

Im:

th :

I

IG LI

G

L

LG

LIG

off

resetV

tr

60

120 240

480

15

30

at1 , 5Ir

4

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8 12

17

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Ic1Ic2

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test

O

pushOFF

connected

test

disconnected

O OFFdischarged

I

pushON

MERLIN GERIN

M32 H1masterpact

IEC947-2

00000

Ui

Ue

Icu

Ics

Icw

1000V

380/440V

100kA

100kA

75kA 1s

50/60Hz

480/690V

85kA

85kA

M63 M50 M40 M08 M32

charged

discharged

O OFF

I ON

E28791

E28761

E28760

M08 to M32

0359

28PC

11

14

7

2

5

1

6

12

13

4

39 108


2/723Merlin Gerin

drawout version1 arc chute cover2 auxiliary terminal shield

3 auxiliaries connection block4 fixed chassis5 safety shutters6 arc chute7 remote control voltage release8 motor for electrical charging of

stored energy mechanism9 control unit (AC system)10 front cover

1

2

3

6

7

8

10

9

5

4

015159


3/72Merlin Gerin4

Automatic source-changeover controller

Fixed circuit breaker

50%

20%

STR58U

0.63

IoIr tr

0.8

0.5 1

xIn

90

105

tr

%Ir

.88

.9 .92.95

.98

1.8.85

xIo

60120 240

480

1530

at 1.5Ir

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3

4 5

6

8

101.5

2

xIr

.3

.4 .3

.1

.1

.2

on I2t off

.2

0

Ir fault

tr

Im fault

tm

I

faultIh

th

i

test

+

+

T

R

test

Ih1200AM ax th

400500 600

800

1000

1200250

320

A

.3

.4 .4

.2

.1.2

on I2t off

.3

.1

I

8

12 14

19

22

Max.2

4

xIn

Ic1 Ic2

.86

.9 .93

.95

.98

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xIr

.7

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Ir :

Im :

th:

min.

norm

overcurrent

ground

isolation renforceclasse II

sparation totaleentre chaque phase

dclencheurs voltmtriquesaccessibles l'avant


safety and reliabilityc reduced, simple maintenance (main

contacts easily accessible, with wearindication feature);c double insulation from the front face;c positive contact indication;c auxiliary devices can be fitted on sitewithout adjustment;c fewer parts than conventional ranges (by afactor of 5-10);c a trip interlock ensures that the circuitbreaker is open during connection anddisconnection;c connection to top or bottom terminals;c fully tropicalised as standard.

stored energy operating

mechanismMasterpact circuit breakers are operated viaa stored energy mechanism forinstantaneous opening and closing.The mechanism is charged either manuallyor electrically. Closing and openingoperations can be initiated either from thelocal pushbuttons on the circuit breaker frontface, or by remote control.

common auxiliariesfrom 800 A to 6300 AAuxiliariesc accessible from the front, mounted in aseparate compartment insulated from power

circuits;c secured by a single screw;c adjustment-free;c can be fitted on site.

ccccc Source changeover systemFour solutions are available:v mechanical interlocking for 2 or 3 circuitbreakers, adaptable to various source-changeover configurations;v automatic source-changeover controller,easy to implement on any two suitablyequipped circuit breakers (electricallycharged operating mechanism, etc.) (for 3circuit breakers, consult us);v complete assembly including 2 or3 mechanically (rod assembly) interlockedcircuit breakers, adaptable to varioussource-changeover configurations;v complete assembly including2 mechanically (rod assembly) interlockedcircuit breakers and an automatic source-changeover controller, adaptable to varioussource-changeover configurations. Readyfor connection.

other possibilities ccccc Fixed circuit breakerThe fixed circuit breaker is derived from the

moving part of the drawout circuit breaker byadding a fixing bracket on each side.

ccccc Switch versionThe switch (unprotected) version is deriveddirectly from the standard circuit breaker, but

does not implement a control unit (or themagnetic trip units used with the DC circuitbreakers). Available models are:

v standard: type HI and NI;v high performance: type HF, equipped witha protection system that instantaneouslyopens the circuit breaker in the event ofclosure under fault conditions.

ccccc Earthing switchA special short-circuit and earthing switch is

available on request for the M08 to M32Hdrawout types, 3 or 4 poles. Please consultus.

ccccc 1000 V AC circuit breakers

E29490

voltage releases

accessible from thefront

total phase

separation

double insulation

035929

053061

053060

053058


4/72Merlin Gerin 5

Drawout Masterpact DC circuit breaker

Fixed Masterpact DC circuit breaker

device identification

M 20 H1

breaking capacity;c N1: standard;c H1: H2: high performance;c L1: current limiting;c DC: direct current.

ratingc rated current / 100.

familyc Masterpact: LV power aircircuit breaker.

DC circuit breakersMasterpact DC circuit breakers are available

in fixed and drawout versions. They benefitfrom the AC range technology andadvantages.c 5 available ratings from 1000 to 8000 A;c 2 breaking capacities, 100 kA at 500 V,50 kA at 750 and 1000 V;c a circuit-breaker version offeringinstantaneous short-circuit protection withan adjustable, magnetic trip unit (DINA);c a switch (unprotected) version.note: up to 125 V DC, the devices in the ACrange (M08 to M63) may be used only in theswitch version, in which case a three-pole,type HI device should be used, with:c 1 pole for the positive polarity;c 1 pole for the negative polarity;

c 1 pole not used.

AuxiliariesAll the auxiliaries designed for theMasterpact AC circuit breakers may be usedon the DC versions, with the exception of theposition switches, indicating the connected(CE), disconnected (CD) and test (CT)positions.Auxiliary connections are made via one or

two manually disconnectable plugs thatremain accessible from the front.

AccessoriesStandard Masterpact DC range equipmentincludes an arc-chute cover (CC) and, ondrawout versions, safety shutters (VO).

Interphase barriers (EIP) are not availablefor the DC range.

86094

86096


5/72Merlin Gerin6


Masterpact circuit breakers are the productof Merlin Gerins vast experience in the fieldof power circuit breakers. They incorporateall the qualities of traditional air circuitbreakers while drawing on certain of the

advantages specific to moulded-case circuitbreakers. In particular, they require nopreventive maintenance.

ease of installationMasterpact is a complete and rationallydesigned range.c 10 ratings;c 4 breaking-capacity levels;c 6 control units;c a complete range of auxiliaries andaccessories;c numerous versions (three and four-pole

devices, fixed and drawout versions, etc.).

Masterpact circuit breakers are easy toincorporate in switchboards.c a single frame size from 800 to 3200 A,thus making for standardised columns;c an upper safety clearance equal to zerodue to the arc-chute cover, on both the fixedand drawout versions;c built-in measurement functions in thecontrol units;c auxiliaries are the same for the entirerange and may be easily implemented (onlya screwdriver is required).

Masterpact circuit breakers are easy to

connect to the main distribution system.

c all types of connections are available(horizontal and vertical terminals, front andmixed connections);c connections are possible with bars of anythickness;c connection to the input power source ispossible on the upper or lower terminals ofthe circuit breakers.

Due to their small size, Masterpact circuitbreakers can replace most existingcircuit breakers.

continuity of serviceMasterpact circuit breakers are designed

with continuity of service in mind. Theresult is:

c total time discrimination on the N1 and H1circuit breakers and maximum discriminationon H2 circuit breakers;c factory pre-setting of Masterpact circuitbreakers which never require any periodicmaintenance;c high electrical endurance: 10 000 cycles at1600 A and 30 cycles at 50 kA, withoutmaintenance;c preventive indications: load-sheddingindication switch, long-time threshold

overrun alarm, etc.;c easy access to the main contacts fittedwith mechanical wear indicators. An optional

function on the STR68 control unit is theremote indication of contact wear, thusmaking possible continuous monitoring ofcircuit breakers during their service life.

operating safetyThe insulating casing of Masterpactcircuit breakers provides for:c user safety:v double insulation on the front face(class II),v auxiliary circuits in a compartmentinsulated from the power circuits;c switchboard safety when the circuitbreaker is in the open position:

v each pole is effectively isolated in its ownhousing,v limitation of external disturbances.Positive contact indicationThe position indicator cannot indicateopen unless the poles are effectively

separated by the required distance.The circuit breakers automatically openduring racking in and out.

reliabilityc Masterpact circuit breakers comprise tentimes fewer parts than traditional devices.They are easier to produce and more

reliable.c the Masterpact circuit-breaker factory iscertified ISO 9002;c the design of Masterpact circuit breakersis modular with delayed differentiation(highest possible number of common partson all models). The result is shorter deliverytimes and enhanced reliability.

,

036634

025179

2500 A Masterpact circuit breaker

Top: front connectionBottom: rear vertical connection


6/72Merlin Gerin8

MERLIN GERINmasterpact

M32 H2

Ui 1000V 50/60Hz

Ue 380/440V 480/690V

Icu 100kA 85kA

Ics 100kA 85kA

Icw 75kA 1s

IEC 947-2

Masterpact: functions and characteristics

general characteristics

Standardised characteristics indicated onthe rating plate:Ui: rated insulation voltageUe: rated operational voltageIcu: ultimate breaking capacity, for variousvalues of the rated operational voltage UeIcs: service breaking capacityIcw: short-time withstand current

: suitable for isolation

Masterpact circuit breakers comply with allthe major international standards:c International standard IEC 947-2;c North American standards (please consultus):UL 489, ANSI C37-50, CSA C22-2,NEMA AB1 et SG3;c Japanese standards: JIS 160 and C 8372.

They also comply with the following nationalstandards:c France NF C 63-120;c Germany VDE 0660;c United Kingdom BS 4752;c Australia AS ;c Italy CEI.Masterpact circuit breakers comply with thespecifications of the marine classificationcompanies (Veritas, Lloyd's Register of

Shipping, Det Norske Veritas, etc.).

IEC 947-2This standard replaces IEC 157-1,

applicable since 1973.The circuit breaker selection criteria areunchanged, but the new standard providesthe user with a better guarantee concerningquality and performance.Circuit breakers are subjected to tests thatare more representative of real operatingconditions.IEC 947-2 also clarifies the notion ofbreaking capacity.cIcu : the ultimate breaking capacity, whichmust be greater than or equal to the 3-phase

short-circuit current at the point ofinstallation of the circuit breaker, a valueunlikely to be reached under real conditions;cIcs : the service breaking capacity,

generally expressed as a percentage of theultimate breaking capacity (25, 50, 75 or100 % of Icu). It corresponds to a short-circuit current that is more likely to bereached under real conditions. The circuitbreaker must continue to operate normallyafter having interrupted a current equal toIcs several times;cIcw : short-time withstand current forcircuit breakers belonging to category B(category B refers to circuit breakers withtime discrimination and category A to thosewithout time discrimination).Furthermore, IEC 947-2 takes into accountrecent technological advances:c suitability for isolation recognised for

circuit breakers having passed specialelectrical and mechanical tests;c industrial earth-fault circuit breakerscovered by an appendix;c definition of tests designed to ensurecoordination between two circuit breakers.

conformity with standards

tropicalisationAs standard, Masterpact circuit breakerscomply with NF C 63-100 standard level 2

conditions (95 % relative humidity at 45 Cor 80 % at 55 C, hot and humid climateconditions). They also comply with thefollowing standards:c IEC 68-2-30 damp heat;c IEC 68-2-2 dry heat;c IEC 68-2-11 salt spray;c IEC 68-2-1 low temperatures during

storage.Corrosive atmospheres: Special grease orother surface coatings available (pleaseconsult us).

pollution degreeMasterpact circuit breakers are certified foroperation in pollution degree IVenvironments as defined byIEC standard 947 (industrial environments).

E

29049


7/729Merlin Gerin

positive contact indicationAll Masterpact circuit breakers offer positive

contact indication. The toggle positionrigorously reflects the position of the maincontacts. It can indicate the "OFF" positiononly if the contacts are effectively open anda suitable distance apart.

degree of protection(as defined by IEC 529)

circuit breaker installed free standing IP 30-5

circuit breaker installed in a cabinet with access IP 40-5to controls through a door cut-out

circuit breaker installed in a cabinet behind a door with IP 54-9a cut-out fitted with a sealed, transparent cover

installationMasterpact circuit breakers may be installedon horizontal metal surfaces or on rails.They are secured by four points accessibleat the bottom of the chassis (drawoutversions) or on either side of the circuitbreaker (fixed versions). A single doorcut-out is required for the entire range andprovides access to Masterpact controls(see the description on page 2)..

035932RC

E28757

E28758

E28

763

maximum dependabilityAll Masterpact circuit breakers are also

disconnectors (suitable for isolation) asspecified by IEC 947-2. They bear thecorresponding symbol on the front cover:

This characteristic considerably increasesthe dependability of the circuit breaker.The conditions specified by IEC 947-2 forthis function are:c positive contact indication;c impulse withstand: 8 kV at sea level;c very low leakage current, checked on newcircuit breakers and on circuit breakerssubjected to tests representative of the endof service life.

Moreover Masterpact circuit breakers have adouble-insulation front face (i.e. a class IIdevice) allowing control from the outside.

E18569


8/72Merlin Gerin6


circuit breaker selection

(1) Defined for a power factor of 0.25 if 20 < kA rms 50 or 0.20 of kA rms > 50.(2) Closing at 6 x Ie and opening at 0.17 x Un.(3) For control unit STR 68 U, the minimum ratingIn is 400 A.

Masterpact circuit breakersnumber of poles

electrical characteristics as per IEC 947-2 and EN 60947-2rated current (A) In 40 C

rating of 4th pole (A)

rated insulation voltage (V) Ui

rated impulse withstand voltage (V) Uimp

rated operational voltage (V) Ue AC 50/60 Hz

type of circuit breakerultimate breaking capacity (1) Icu AC 50/60 Hz 220/415 V(kA rms) 440 V

500/690 V

service breaking capacity Ics (% Icu)

short-time withstand current Icw AC 50/60 Hz 0.5 s(kA rms) 1 s

3 s

making capacity (kA peak) Icm AC 50/60 Hz 220/415 V

440 V

500/690 V

electrodynamic withstand (kA peak)

utilisation category

suitability for isolation

break time

closing time

endurance (C-O cycles) x 1000 mechanical with maintenance

no maintenance

electrical no maintenance 440 V - In

690 V - In

motor control (AC3-947-4) (2) 690 V

electrical characteristics as per standard Nema AB1breaking capacity (kA) 480 V

600 V

protection (see following pages)sensor ratings (A) (see page 12)

control unit instantaneous STR 18 Mprotection type distribution STR 28 D

selective STR 38 S

universal STR 58 U

STR 68 U

installation and connectionsconnection

version drawout

fixed

indication and measurement auxiliariesauxiliary switches

electronic trip unit related functions

control auxiliariesauxiliary releases (MN, MNR, MX, XF)

motor mechanism (MCH)

operation counter (CDM)

installation and connection accessorieslocking by padlock or keylock/mismatch protection

safety shutters (VO)

interphase barriers (EIP)

partitioning fixture (AC)

arc-chute cover (CC)

terminal-block cover (CB)

door frame (CDP)

transparent cover (CCP)

035928

Masterpact M16 H1


9/727Merlin Gerin

M08 M10 M12 M163, 4 3, 4 3, 4 3, 4

800 1000 1250 1600

800 1000 1250 1600

1000 1000 1000 1000

8000 8000 8000 8000

690 690 690 690

N1 H1 H2 L1 N1 H1 H2 L1 N1 H1 H2 L1 N1 H1 H2 L140 65 100 130 40 65 100 130 40 65 100 130 40 65 100 130

40 65 100 110 40 65 100 110 40 65 100 110 40 65 100 110

40 65 85 65 40 65 85 65 40 65 85 65 40 65 85 65

100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 %

40 65 65 12 40 65 65 12 40 65 65 12 40 65 65 17

30 50 50 12 30 50 50 12 30 50 50 12 40 50 50 17

22 32 32 12 22 32 32 12 22 32 32 12 22 32 32 12

84 143 220 286 84 143 220 286 84 143 220 286 84 143 220 286

84 143 220 242 84 143 220 242 84 143 220 242 84 143 220 242

84 143 187 143 84 143 187 143 84 143 187 143 84 143 187 143

84 143 143 24 84 143 143 24 84 143 143 24 84 143 143 34

B B B B B B B B B B B B B B B B

c c c c

25 to 30 ms without intentional time delay and 9 ms for type L1

70 ms

20 20 20 20 20 20 20 20 20 20 20 15 20 20 20 15

10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10

10 10 10 3 10 10 10 2.7 10 10 10 2.5 10 10 10 2.2

10 10 10 3 10 10 10 2.7 10 10 10 2.5 10 10 10 2.2

10 10 10 - 10 10 10 - 10 10 10 - 10 10 10 -

40 65 100 - 40 65 100 - 40 65 100 - 40 65 100 -

40 65 65 - 40 65 65 - 40 65 65 - 40 65 65 -

200 to 800 (3) 200 to 1000 (3) 200 to 1250 (3) 200 to 1600 (3)

c c c c c c c c c c c c

c c c c c c c c c c c c

c c c c c c c c c c c c c c c c



front and rear connections

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c


10/72Merlin Gerin8


circuit breaker selection (cont.)

Masterpact circuit breakersnumber of poles







500/690 V


short-time withstand current Icw AC 50/60 Hz 0.5 s(kA rms) 1 s

3 s


440 V

500/690 V




break time

closing time


no maintenance


690 V - In


electrical characteristics as per standard Nema AB1breaking capacity (kA) 480 V

600 V



selective STR 38 S

universal STR 58 U

STR 68 U


version drawout

fixed












door frame (CDP)


036635

Masterpact M50 H1

(1) Defined for a power factor of 0.25 if 20 < kA rms 50 or 0.20 of kA rms > 50.(2) Closing at 6 x Ie and opening at 0.17 x Un.(3) For control unit STR 68 U, the minimum ratingIn is 400 A.(4) 83% if Ue i 440 V.(5) Consult us for full rated neutral.


11/729Merlin Gerin

M20 M25 M32 M40 M50 M633, 4 3, 4 3, 4 3, 4 3, 4 3, 4

2000 2500 3200 4000 5000 6300

2000 2500 3200 4000 2500 (5) 3200

1000 1000 1000 1000 1000 1000

8000 8000 8000 8000 8000 8000

690 690 690 690 690 690

N1 H1 H2 L1 N1 H1 H2 L1 H1 H2 H1 H2 H1 H2 H1 H255 75 100 130 55 75 100 130 75 100 75 100 100 150 100 150

55 75 100 110 55 75 100 110 75 100 75 100 100 150 100 150

55 75 85 65 55 75 85 65 75 85 75 85 85 85 85 85

100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % (4) 100 % 100 % (4)

55 75 75 17 55 75 75 17 75 75 75 75 100 100 100 100

55 75 75 17 55 75 75 17 75 75 75 75 100 100 100 100

50 57 57 17 50 75 75 17 75 75 75 75 100 100 100 100

121 165 220 286 121 165 220 286 165 220 165 220 220 330 220 330

121 165 220 242 121 165 220 242 165 220 165 220 220 330 220 330

121 165 187 143 121 165 187 143 165 187 165 187 187 187 187 187

121 165 165 34 121 165 165 34 165 165 165 165 220 220 220 220

B B B B B B B B B B B B B B B B

c c c c c c


70 ms 80 ms

15 15 15 15 15 15 15 15 15 15 10 10 10 10 10 10

10 10 10 10 10 10 10 10 10 10 5 5 5 5 5 5

9 9 9 2 8 8 8 1.8 4 4 3 3 3 3 2 2

7 7 7 2 6 6 6 1.8 2.6 2.6 2.5 2.5 2.5 2.5 1.5 1.5

7 7 7 - 6 6 6 - 2.6 2.6 2.5 2.5 2.5 2.5 1.5 1.5

55 75 100 - 55 75 100 - 75 100 75 100 100 125 100 150

55 75 75 - 55 75 75 - 75 75 75 75 100 100 100 100

200 to 2000 (3) 300 to 2500 (3) 600 to 3200 2000 to 4000 2000 to 5000 2000 to 6300

c c c c c c c c c c c c c c

c c c c c c c c c c c c c c




front and rear connections rear connections

c c c c c c

c c c c c (3P only)

c c c c c c

c c c c c c

c c c c c c

c c c c c c

c c c c c c

c c c c c c

c c c c c c

c c c c (3P only)

c c c c c c

c c c c c c

c c c c c c

c c c c c c

c c c c c c


12/72Merlin Gerin10


circuit breaker selection (cont.)

Masterpact 1000 V AC

Masterpact 1000 V AC circuit breakersnumber of poles







500/690 V

1000 V


short-time withstand current Icw AC 50/60 Hz 0.5 s

(kA rms) 1 s

3 s


440 V

500/690 V

1000 V




break time

closing time


no maintenance

electrical no maintenance 440 V - In690 V - In




selective STR 38 S

universal STR 58 U

STR 68 U


version drawout

fixed









partitioning fixture (AC)arc-chute cover (CC) (as standard on the 1000 V version)


door frame (CDP)


(1) Defined for a power factor of 0.25 if 20 < kA rms 50 or 0.20 of kA rms > 50.(2) Closing at 6 x Ie and opening at 0.17 x Un.(3) For control unit STR 68 U, the minimum ratingIn is 400 A.

Masterpact M20 H1 1000 V

052380


13/7211Merlin Gerin

M08 M10 M12 M16 M20 M25 M323, 4 3, 4 3, 4 3, 4 3, 4 3, 4 3, 4

800 1000 1250 1600 2000 2500 3200

800 1000 1250 1600 2000 2500 3200

1000 1000 1000 1000 1000 1000 1000

8000 8000 8000 8000 8000 8000 8000

1000 1000 1000 1000 1000 1000 1000

H1 H1 H1 H1 H1 H1 H165 65 65 65 75 75 75

65 65 65 65 75 75 75

65 65 65 65 75 75 75

45 45 45 45 45 45 45

100 % 100 % 100 % 100 % 100 % 100 % 100 %

45 45 45 45 45 45 45

45 45 45 45 45 45 45

32 32 32 32 45 45 45

143 143 143 143 165 165 165

143 143 143 143 165 165 165

143 143 143 143 165 165 165

95 95 95 95 95 95 95

143 143 143 143 165 165 165

B B B B B B B

c c c c c c c


70 ms

20 20 20 20 15 15 15

10 10 10 10 10 10 10

10 10 10 10 9 8 410 10 10 10 7 6 2.6

10 10 10 10 7 6 2.6

200 to 800 (3) 200 to 1000 (3) 200 to 1250 (3) 200 to 1600 (3) 200 to 2000 (3) 300 to 2500 (3) 600 to 3200

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

rear connections only / supply by upstream terminals mandatory

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c

c c c c c c c


14/72Merlin Gerin12


switch-disconnectors

Masterpact switch-disconnectorsnumber of poles






type of switch-disconnectorshort-time withstand current Icw AC 50/60 Hz 0.5 s(kA rms) 1 s

3 s

making capacity (kA peak) Icm AC 50/60 Hz 440 V

500/690 V



closing time


no maintenance


690 V - In


protectionSTR 08 dummy unit (no protection)

STR 18I (protection against short-circuits when closing)


version drawout

fixed











door frame (CDP)


(1) Closing at 6 x Ie and opening at 0.17 x Un.

Masterpact M10 NI

052384


15/7213Merlin Gerin

M08 M10 M12 M163, 4 3, 4 3, 4 3, 4

800 1000 1250 1600

800 1000 1250 1600

1000 1000 1000 1000

8000 8000 8000 8000

690 690 690 690

NI HI HF NI HI HF NI HI HF NI HI HF40 65 65 40 65 65 40 65 65 40 65 65

30 50 50 30 50 50 30 50 50 30 50 50

22 32 32 22 32 32 22 32 32 22 32 32

84 105 143 84 105 143 84 105 143 84 105 143

84 105 143 84 105 143 84 105 143 84 105 143

84 143 143 84 143 143 84 143 143 84 143 143

c c c c

70 ms

20 20 20 20 20 20 20 20 20 20 20 20

10 10 10 10 10 10 10 10 10 10 10 10

10 10 10 10 10 10 10 10 10 10 10 10

10 10 10 10 10 10 10 10 10 10 10 10

10 10 10 10 10 10 10 10 10 10 10 10

c c c c c c c c

c c c c

front and rear connections

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c

c c c c


16/72Merlin Gerin12


switch-disconnectors (cont.)

Masterpact switch-disconnectorsnumber of poles






type of switch-disconnectorshort-time withstand current Icw AC 50/60 Hz 0.5 s(kA rms) 1 s

3 s

making capacity (kA peak) Icm AC 50/60 Hz 440 V

500/690 V



closing time


no maintenance


690 V - In


protectionSTR 08 dummy unit (no protection)

STR 18 I (protection against short-circuits when closing)


version drawout

fixed











door frame (CDP)


(1) Closing at 6 x Ie and opening at 0.17 x Un.

Masterpact M50 HI

052388


17/7213Merlin Gerin

M20 M25 M32 M40 M50 M633, 4 3, 4 3, 4 3, 4 3, 4 3, 4

2000 2500 3200 4000 5000 6300

2000 2500 3200 4000 2500 3200

1000 1000 1000 1000 1000 1000

8000 8000 8000 8000 8000 8000

690 690 690 690 690 690

NI HI HF NI HI HF HI HF HI HF HI HF HI HF55 75 75 55 75 75 75 75 75 75 100 100 100 100

55 75 75 55 75 75 75 75 75 75 100 100 100 100

50 57 57 50 75 75 75 75 75 75 100 100 100 100

84 105 165 84 105 165 105 165 105 165 187 220 187 220

84 105 165 84 105 165 105 165 105 165 187 220 187 220

121 165 165 121 165 165 165 165 165 165 220 220 220 220

c c c c c c

70 ms 80 ms

15 15 15 15 15 15 15 15 10 10 10 10 10 10

10 10 10 10 10 10 10 10 5 5 5 5 5 5

9 9 9 8 8 8 4 4 3 3 3 3 2 2

7 7 7 6 6 6 2.6 2.6 2.5 2.5 2.5 2.5 1.5 1.5

7 7 7 6 6 6 2.6 2.6 2.5 2.5 2.5 2.5 1.5 1.5

c c c c c c c c

c c c c c c

front and rear connections rear connections

c c c c c c

c c c c c (3P only)

c c c c c c

c c c c c c

c c c c c c

c c c c c c

c c c c c c

c c c c c c

c c c c (3P only)

c c c c c c

c c c c c c

c c c c c c

c c c c c c

c c c c c c


18/72Merlin Gerin12


dimensions and weights

Masterpact circuit breakers and switch-disconnectorstype

dimensions and weightsdimensions W x H x D drawout 3P(mm) 4P

fixed 3P

4P

maximum weight drawout 3P

(kg) 4P

fixed 3P

4P

Masterpact circuit breakers and switch-disconnectorstype


fixed 3P

4P

maximum weight drawout 3P(kg) 4P

fixed 3P

4P

Masterpact 1000 V circuit breakerstype


maximum weight drawout 3P(kg) 4P

sensor selectionIn (A) 200 250 320 400 500 600 630 800 1000 1200

Ir threshold 80 100 125 160 200 240 250 320 400 480

settings (A) to 200 to 250 to 320 to 400 to 500 to 600 to 630 to 800 to 1000 to 1200

In (A) 1250 1600 2000 2500 3000 3200 4000 5000 6000 6300

Ir threshold 500 640 800 1000 1200 1280 1600 2000 2400 2500

settings (A) to 1250 to 1600 to 2000 to 2500 to 3000 to 3200 to 4000 to 5000 to 6000 to 6300

The table above indicates:

c all the available sensor ratings In;c the limits of the long time Ir settings.


19/7213Merlin Gerin

M08 M10 M12 M16 M20 M25 M32N1/H1/H2/L1 N1/H1/H2/L1 N1/H1/H2/L1 N1/H1/H2 L1 N1/H1/H2 L1 N1/H1/H2 L1 H1/H2

NI/HI/HF NI/HI/HF NI/HI/HF NI/HI/HF NI/HI/HF NI/HI/HF HI/HF

435 x 439 x 367 435 x 439 x 367 435 x 439 x 367 435 x 439 x 367 435 x 439 x 367 435 x 439 x 367 435 x 439 x 367

550 x 439 x 367 550 x 439 x 367 550 x 439 x 367 550 x 439 x 367 550 x 439 x 367 550 x 439 x 367 550 x 439 x 367

422 x 356 x 290 422 x 356 x 290 422 x 356 x 290 422 x 356 x 290 422 x 356 x 290 422 x 356 x 290 422 x 356 x 290

537 x 356 x 290 537 x 356 x 290 537 x 356 x 290 537 x 356 x 290 537 x 356 x 290 537 x 356 x 290 537 x 356 x 290

65 65 65 69 82 82 130 82 130 130

80 80 80 85 102 102 150 102 150 150

43 43 43 46 55 55 80 55 80 80

54 54 54 58 69 69 90 69 90 90

M40 M50 M63H1/H2 H1/H2 H1/H2

HI/HF HI/HF HI/HF

550 x 439 x 367 815 x 484 x 367 1045 x 484 x 367

815 x 484 x 367 1045 x 484 x 367 1045 x 484 x 367

537 x 356 x 290 802 x 356 x 290

801 x 356 x 290

150 215 245

200 230 265

90 110

110

M08 M10 M12 M16 M20 M25 M32H1 H1 H1 H1 H1 H1 H1

435 x 439 x 367 435 x 439 x 367 435 x 439 x 367 435 x 439 x 367 435 x 439 x 367 435 x 439 x 367 435 x 439 x 367

550 x 439 x 367 550 x 439 x 367 550 x 439 x 367 550 x 439 x 367 550 x 439 x 367 550 x 439 x 367 550 x 439 x 367

65 65 65 69 82 82 130

80 80 80 85 102 102 150


20/72


21/7215Merlin Gerin

protectionSTR 28 DKey:

1 reset button: pops out when the circuitbreaker has tripped on a fault and must

be pressed (reset) before the circuitbreaker can be closed again.

2 ammeter digital display.

3 bar graph indicating load level (% Ir).

4 maximum protection rating.

5-6 long-time current setting as a function of:Io x Ir x In.

7 instantaneous pick-up.

8 overcurrent indicator LED.

9 noted settings.

10 test connector.

11 holes for sealable cover plate screws.

push to reset

II1 I2 I3

90%

50%

20%

STR 28 D

Io

xIn

90

105%Ir

xIo

Im

xIr

Ir

Im

t

i

test

+

Ir :

Im :

Ir

1

.88.9 .92

.95

.981.8

.850.5

0.63 0.8

1

34 5

6

8101.5

2

2

3

4

11

5

6

7

9

8

10

11

protectionSTR 38 SKey:

1 reset button: pops out when the circuitbreaker has tripped on a fault and mustbe pressed (reset) before the circuitbreaker can be closed again.

2 ammeter digital display.

3 bar graph indicating load level (% Ir).

4 maximum protection rating.

5 overcurrent indicator LED.

6-7 long-time current setting as a function of:Io x Ir x In.

8 short-time pick-up.

9 short-time delay.

10 noted settings.

11 instantaneous pick-up.

12 earth fault pick-up.

13 earth fault delay.

14 LEDs indicating tripping on long-time,short-time or earth fault.

15 test connector.

16 holes for sealable cover plate screws.

17 battery supplying backup power for faultindication.

18 fault indication reset and/or battery test.

19 re-indication of last fault.

push to reset

II1 I2 I3

90%

50%

20%

STR 38 S

xIn xIo

Im tm

xIr on I2t off

Ir fault

tr

Im faulttm

I

faultIh

th

t

i

test

+

+

T

F

test

Ih th

A on I2t off

I

xIn

Ir :

Im :

th :

overcurrent

ground

1

2

3

4

16

90

105%Ir

Io

0.5

0.63 0.8

1

Ir

.88.9 .92

.95

.981.8

.85

34 5

6

8101.5

2

.3.4 .3

.2

.10.1

.2

max. off

400500 600

800

10001200250

320

.3.4 .4

.3

.2.1.1

.2

5

6

7

8 9

12

11

1314

16 15

19

18

17

10

7

6

I IIr

t

0

other functionsc fault indication;c indication of LT overrun;c ammeter;c self-monitoring (internal overheating).

11

Ir Im

8

I I

t

0

7

9

12

13

I2t ON

I2t OFF

other functionsc fault indication;c indication of LT overrun;c ammeter;c self-monitoring (internal overheating);c indication of type of fault (F).

E30704

E31220

E31221

E33950


22/72Merlin Gerin16


control unit selection (cont.)

protectionSTR 58 U

push to reset

II1 I2 I3

90%

50%

20%

STR 58 U

tr

Ir fault

tr

Im faulttm

I

faultIh

th

t

i

test

+

+

T

R

Ftest

Ir :

Im :

th :

Max.

norm

overcurrent

ground

2

3

4

5

21

6

7

8

21

16

V

reset V I

I+T L+I

L+I+T

ToffL

L+T

xIn

Io

0.5

0.63 0.8

1

90

105%Ir

.88.9 .92

.95

.981.8

.85

Ir

xIo

60120 240

48015

30

tr

at 1.5Ir

Im tm

xIr on I2t off

34 5

6

8101.5

2

.3.4 .3

.2

.10.1

.2

I

xInoff

22

191412

8

4

2

Ih 1200A Max th

A on I2t off

400500 600

800

10001200250

320

.3.4 .4

.3

.2.1.1

.2

Ic1 Ic2

xIr

.86.9 .93

.95

.9818

.85

.7.8 .85

.9

.951.5

.6

xIr

1

12

9

10

11

13

15

14

17

19

24 18

20

23 22

protectionSTR 68 U

STR 68 U

reset

1 2 3 max

A

Ir Im I

s

Ih

tm

th

fault

adjustments

24 V DC

test

KA

S

1

tr

A

trip no trip MEM

test

2%

load monitoringmaintenance

N 1 2 3

Hz

Cos

kW

MWh

+

685812

V

10

88

9

7

611

5

4

3

2

2

1Key:


2 selection of displayed value (voltage,power, energy, power factor, frequency).

3 display of current or interrupted current(when flashing).

4 local fault indication and indication reset.5 selection and indication of protection

parameter to be set.6 selection and indication of load

monitoring parameters.7 adjustment and saving of parameter

settings.

8 holes for sealable cover plate screws.9 test connector.10 test.11 maintenance indicator.

Ir Im I I

t

0

I2t ON

I2t OFFLT setting(Ir)

ST pick-up(Im)

ST time delay(tm)

instantaneouspick-up (I)

earth faulttime delay (th)

earth fault

pick-up (Ih)

LT time delay(tr)

other functionsc fault indications and memorisation;c maintenance indicator;c ammeter;c integrated test;c power measurement;c load monitoring (R);c self-monitoring (internal overheating,

malfunction of the microprocessor);c zone selective interlocking for earth

faults.

other functionsc fault indication;c indication of LT overrun;c ammeter;c self-monitoring (internal overheating);c fault type indication (F);c segregated alarm switch for selected

fault type (V);c zone selective interlocking (Z);c load monitoring (R);c communication (COM).

9

13

Ir Im

10

I I

t

0

8

1114

15

I2t ON

I2t OFF

E30705

E31222

E31223

E33949

Key:


2 selection of fault type for segregatedalarm: Ir and/or Im and/or IhL: long-time fault (Ir)I: short-time fault (Im/l)T: earth fault (Ih)

3 ammeter digital display.4 bar graph indicating load level (% Ir).5 maximum protection rating.6 overcurrent indicator LED.7-8 long-time current setting as a function of:

Io x Ir x In.9 long-time trip delay

10 short-time pick-up.11 short-time delay.12 adjustment of thermal memory after

tripping.

13 instantaneous pick-up.14 earth fault pick-up.15 earth fault delay.16 noted settings.17-18 load monitoring settings.19 test connector.20 battery supplying backup power for fault

indication.21 holes for sealable cover plate screws.22 fault indication reset and/or battery test.23 re-indication of last fault.24 LEDs indicating tripping on long-time,

short-time or earth fault.


23/7217Merlin Gerin

I

t

0

Ih

Th

I2t ON

I2t OFF

options for STR control units

zone selective interlocking(Z)

"earth fault" protection

(T or W)

This earth fault protection is designed to

protect the installation against the risks offire due to high earth faults (not to beconfused with schemes designed for the

protection of persons against electricalshock).Two types of earth protection are availablefor Masterpact:c residual current type (T): the control unitcalculates the vector sum of the phase andneutral (if distributed) currents;c source ground return type (W): the controlunit acts directly on the signal received froman external current transformer installed onthe source earthing circuit.

earth fault curves for the STR 58

load monitoring (R) Remote indication of threshold overrun forload-shedding or load-reconnectionpurposes.

I

t

0

Ic2Ic1

load monitoring curves for the STR 58

communication: STR 58 Utransmission: STR 68 U

Transmission of the control unit settings,circuit breaker position and current, voltageand power measurements.

indication andmeasurement

c ammeter (I): a digital displaycontinuously indicates the current of thephase with the greatest load (Imax). Bypressing a scroll button, it is also possible todisplay successively the readings of I1, I2,I3, Ineutral and Ih.In addition, three bargraphs provide animmediate visual indication of the load oneach of the three phases.

E26037

E31225

A number of circuit breakers areinterconnected one after another by a pilot-wire. In the event of a short-time or earthfault, the control unit applies the set timedelay only if it receives a signal from adownstream circuit breaker. If not, it tripsinstantaneously (tripping time as 0.1 short-time setting). In this way, the fault is clearedrapidly by the nearest circuit breaker. The

thermal stresses in the installation areminimised while maintaining timediscrimination throughout the entire

installation.Opto-electronic outputs

The use of opto-transistors ensures totalisolation between the internal circuits of thecontrol unit and the circuits wired by theuser.

Other information that can be transmittedincludes the value of the interrupted current,the state of the thermal memory and themaintenance indications

c indication of type of fault (F);

c segregated alarm switch for selectedfault type (V), wired in parallel with the

opening button (MX), it disables circuitbreaker closing for the selected type of fault.


24/72Merlin Gerin18



STR 18 M to STR 58 U

control unittype of circuit breaker

basic protectionlong time protection LT

current setting (Ir) as a function of Io and Ir Io = In x ...

settings tripping between 1.05 and 1.20 x Ir Ir = Io x ...

time delay (tr)

accuracy: + 0 - 20 % tr at 1.5 Ir (s)

tr at 6 Ir (s)

tr at 7.2 Ir (s)

short-time protection ST

pick-up (Im) adjustable by Im setting Im = Ir x ...

time delay (tm) tm setting with I2t OFF

tm setting with I2t ON

max. overcurrent time before tripping (ms)

max. break time (ms)instantaneous protection I

pick-up setting

setting range

accuracy

OFF switch on front face

basic functionsfault indication

for tripping on a fault indicator button on front face

fault trip alarm contact (SDE)

for LT setting overrun LED (lights up at 0.9 Ir and flashes at 1.05 Ir)

LT overrun alarm contact (optional)

self-powered

self-monitoring internal overheating

optional functionsammeter (I) display between 0.2 and 1.20 In

current readings with an accuracy of 1.5 % (1) (3)

bargraph indication of current levels with a resolution of 10 %

self-powered

earth fault protection: residual current(T) or source ground return (W) type on request

pick-up adjustable by Ih setting Ih = In x ...

time delay (th) th setting with I2t ON and I2t OFF

max. overcurrent time before tripping (ms)

max. break time (ms)

indication of type of fault (F) (LT - CT/Inst. - Earth) by LEDs on front face

power supply with battery module

with external power supply by AD modulesegregated alarm switch for selected fault type (V) (LT - CT/Inst. - Earth)

output via relay contact

power supply by AD module

zone selective interlocking (Z)

by opto-electronic contact on ST and earth (T/W) fault

load monitoring (R)

adjustment of load limit thresholds by Ic1 and Ic2 settings Ic1 = Ir x ... / Ic2 = Ir x ...

time delay tr1 at 1.5 Ic1

time delay tr2 at 1.5 Ic2

output via opto-electronic contact 0.1 A / 240 V

time delay for load reconnection

communication (COM)

2 outputs for data transmission to Digipact moduletransmitted values all control unit settings

alarms: Ir warning, fault type, self-monitoring

load monitoring thresholds

current values I1, I2, I3, IN

power supply by AD module

STR 58 U

048449

(1) Plus the uncertainty of the built-in transformers: 3 %.

(2) Max = In x ... N1/H1 H2 L1

630 A 22 28 14800 - 1000 A 22 28 101200 - 1600 A 22 24 82000 A 17 20 62500 A 12 14 63000 - 3200 A 10 12 4000 - 6300 A 8 10

(3) Continuous display for the phase with thegreatest load.

(4) 0.2 x In to 1200 A without external powersupply or 0.1 x In with external power supply.

(5) Accuracy with respect to the long time LTprotection.

(6) Resettable maximum ammeter.


25/72


26/72Merlin Gerin20



STR 68 U

presentationThe STR 68 U control unit offers

measurement, supervision and energymanagement functions.Microprocessor technology, liquid crystaldisplay and function keys ensure highaccuracy and easy adjustment.

The standard STR 68 U control unit providesthe following:c universal protection;c ammeter function;c indication of fault type;c values of interrupted currents;c maintenance indicator;c integrated test.

The following options can be added:c power measurement module (P);c "earth fault" protection module;c control and indication modules (M) with orwithout transmission to a supervisor.Certain M modules can provide loadmonitoring or zone selective interlocking forearth fault protection.

The STR 68 control unit provides:c overload protection, with long timeprotection LT including:v adjustable time delay and thermalmemory possibility;c short-circuit protection:

v delayed, with short time function ST, forwhich the I2t curve can be disabled by theuser,v instantaneous, with the INST function thatcan be disabled by the user;

protection

036630

c "earth" protection with timediscrimination or zone selective interlocking.The protection is of the residual current type(or source ground return type on request).

basic functions c ammeter;c maintenance indicator;c fault indications and values of theinterrupted currents;c self-monitoring: in the event ofoverheating of the control unit or amalfunction of the microprocessor, an alarmsignal is transmitted. Unless the "servicecontinuity" option was ordered, the circuitbreaker will trip ;c test.


27/7221Merlin Gerin

optional functions c power measurement (P);c indication and control (M)

Thirty-one different modules offer various

combinations of functions including:v load monitoring,v trip indication,v self-monitoring,v zone selective interlocking for "earth fault"protection,v transmission of data to a supervisor(modules M17 to M31 only).Each STR 68 U control unit can be equippedwith only one M module.For the function offered by each M module,(see page xxx).

c "earth fault" protection (T)

Of the residual current type (or source

ground return type on request), it is possible

to obtain zone selective interlocking bycombining the T option with the appropriateM option.


28/72


29/7223Merlin Gerin

optional functionsearth fault protection: residual current (T) or source ground return (W) type on request c (zone selective interlocking with option M)

pick-up (Ih) adjustable in 2 % steps Ih = In x ... 0.2 to 1 (maxi 1200 A. mini 160 A ) 15 %time delay (th) th setting 0.1 0.2 0.3 0.4

max. overcurrent time before tripping (ms) 60 140 230 350

max. break time (ms) 140 230 350 500

thermal memory (10 mn) c

power measurement (P) (see opposite page for details) c

output characteristics opto-decoupled 0.2 A - 24 V DC

integrated power supply c

voltage measurements U12. U23. U31 160 to 690 1 %

V1N. V2N. V3N 90 to 400 V 1 %

frequency measurement: f 45 to 65 Hz 0.5 %

power factor measurement: cos - 1 to + 1 2.5 %

instantaneous active power measurement: P - 9000 to 9000 kW 5 %

instantaneous active energy measurement: EP 0 to 9999 MWh 5 %indication and control (M): 31 modules (1 per control unit) providing the following combinations: c

load monitoring 2 possible options

option 1: 2 load limit pick-ups Ic1 and Ic2 Ic1 = In x ... 0.2 to 1 In 2 % steps

delay tr1 = 0.5 x tr 5 %

Ic2 = In x ... 0.2 to 1 In 2 % steps

delay tr2 = 0.25 x tr 5 %

option 2: 1 load limit pick-up Ic1 Ic1 = In x ... 0.2 to 1 In 2 % steps

1 load reconnection pick-up Ic2 delay tr1 = 0.5 x tr 5 %

Ic2 = In x ... 0.2 to 1 In 2 % steps

delay tr2 = 60 s fixed 5 %

zone selective interlocking for earth fault protection

trip indications

for type of fault long-time, short-time, earth

for self-monitoring (1) alarm

transmission

characteristics type RS 485

protocol JBus

speed 9600 bauds

max. number of addresses 255

values transmitted: type of fault tripping on Im, Ir, Ih

circuit breaker status self-monitoring alarm

settings all pick-ups and delays

circuit breaker status open or closed

values transmitted: ammeter currents I1, I2, I3 max

power system status voltmeter voltages U12, U23, U31

voltages V1N, V2N, V3N

power factor, frequency cos , f

instantaneous active power and energy: P. EP - 9000 to 9000 kW. 0 to 9999 MWh 5 %

instantaneous reactive power and energy: Q. EQ - 9000 to 9000 kVar. 0 to 9999 MVahr 5 %

power supply 24, 48, 125 V DC or 100, 240 V AC

(1) Depending on the equipment, the "self-monitoring" alarm signal may or may not trip the circuit breaker, see "service continuity" option on the order form.


30/72Merlin Gerin24

option m selection Option M can be incorporated in control unitSTR68U to provide the following functions:c RS485 data transmission at 9600 bauds toJBUS protocol;c remote signal via opto-electronic output;c zone selective interlocking for earth faultprotection.

The following table indicates the functions ofthe different versions, designated m01 tom31.For terminal wiring see page xxxx.

without data transmissionoption m01 m02 m03 m04 m05 m06 m07 m08 m09 m10 m11 m12 m13 m14 m15 m16

remoting

load monitoring and control

pick-up Ic1 indication c c c c c c c c c c

load shedding c c c c c c c c c c c c c

pick-up Ic2 indication c c c c

load shedding c c c c c c c c c

load reconnection c c c c

fault indications

Ir c c c c c c c c c c c

Im/I c c c c c c c c c c c c c c c c (1)

Ih c c c c c c c c c c

self-monitoring c c c c c c c c c

zone selective interlocking

on the earth fault protection c c c c c

with data transmissionoption m17 m18 m19 m20 m21 m22 m23 m24 m25 m26 m27 m28 m29 m30 m31

data transmission

all parameters (see page xxxx) c c c c c c c c c c c c c c c

remoting

load monitoring and control

pick-up Ic1 indication c c c

load shedding c c c c c c

pick-up Ic2 indication c

load shedding c

load reconnection c

fault indications

Ir c

Im/I c c c c c

Ih c c c c

self-monitoring c c c c

zone selective interlocking

on the earth fault protection c c c c


control unit selectionSTR 68 U (cont.)

(1) Two separate outputs for Im and I.


31/7225Merlin Gerin

Factory adjustmentsThe STR68U control unit is factory adjustedas follows:

LT setting Ir In

time delay tr 480 s

ST pick-up Im 4 In

time delay tm 0,2 s

INST pick-up I maxi

T earth fault pick-up Ih 0,2 In

time delay th 0,1 s

load monitor Ic1 In

Ic2 In

Earth fault protection (option T)

operating zones

Basic functions: long time LT,

short time ST, instantaneous INST

2

5

Ir Im

3

I I

t

0

1

4

I2t ON

I2t OFF

I

t

0

T1

T2

I2t ON

I2t OFF

overcurrent settings1 : LT setting Ir (long time)2 : LT time delay tr (long time)3 : ST pick-up Im ( short time)4 : ST time delay tm ( short time)5 : INST pick-up I (instantaneous)

earth fault protection settingsT1 : earth fault pick-up IhT2 : earth fault time delay th

load monitoring and control(option M)

Operation with 2 load limit pick-ups

I

t

0

Ic2

Ic1

I

t

0

Ic2

Ic1

load monitoring and control settingsIc1 pick-up (load limit)Ic2 pick-up (load limit)

load monitoring and control settingsIc1 pick-up (load limit)Ic2 pick-up (load reconnection)

Operation with 1 load limit and 1 loadreconnection pick-up

E26037

E2603

8

E26039

E26042


32/72Merlin Gerin26


control unit accessories

battery module (PIL)Complementary to the local indication of the

faults (F option for STR 38 and STR 58 tripunits), the battery module avoids the needfor any external power supply to save frontface indications.

This module is equipped with a button for re-activation, of fault indications that have beende-activated by the battery power-saving

feature. A test button is used to check thebattery status.

interface module ET44Compulsory with the data transmissionoption on the STR 68 trip unit, the ET44interface module allows:c setting of the transmission speed;c definition of the address of the breaker(which will not be affected by any drawoutbreaker manipulation);

c the direct remote control of the breaker,thanks to two outputs directly controlled

through the data transmission.

Installation: on vertical plate or symmetricalrail.

Power supply: 24 V DC with galvanicisolation, or AD type power module.

048327

048321

relay module (MR6)

For relaying of information from outputs ofmodules m01 to m32 of control unit STR 68via output changeover contacts10 A/220 V AC or 3 A/24 V DC.

Installation : on vertical plate or symmetricalrail.

Power supply module (AD) is required.

025172

power supply module (AD)These modules can be used to powercontrol unit complementary functions which

cannot be self-powered by the built-incurrent transformers:c STR 38 and STR 58: fault type indication(F);c STR 58: segregated alarm switch (V);cSTR 58: communication option (COM);c STR 28, STR 38, STR 58: ammeter (I) forload less than 20% of In.c STR 68: indication and saving of

025173 measurements, alarms, maintenance

indicator;c MR6 module.Moreover, these modules protect the trip unitfrom transient overvoltages thanks togalvanic isolation.

Available voltages:c AC 50/60 Hz: 110 V, 220 V or 380 V(20 %; +15 %) (consumption 10 VA);

c DC : 24/30 V, 48/60 V, 125 V (20 %)(consumption 10 W).Installation: on vertical plate or symmetricalrail.

047035

052172

battery module (BAT)Providing a complement to the AD module,the battery module provides backup power

for display indications and maintenanceindicator data in the event of a power failure.Float connected between the power supplyand the control unit, it ensures a backup

time of approximately:

c 12 h with STR 38 and STR 58 controlunits;c 1.5 h with STR 68 control unit.

Installation: on vertical plate or symmetricalrail. (ambient temperature from: 0 C to+50 C).

mini test kit (BU)

This self-contained portable unit is used tocheck STR 18 M to STR 58 U control unitsoperations and breaker tripping.Power supply: five 9 V alkaline batteries (notsupplied).

This test kit is common to the Masterpact,Compact NS, C, CM ranges.

025171

portable test kit for STR 18to STR 58The portable test kit is used:c for control unit STR 68, to power, checkand carry out adjustments and tests on the

breaker/control unit assembly (control unitwithout auxiliary power supply connected);

c for other control units, to check theoperation of the trip unit by measuring theactual trip time:v long-time protection,v short-time protection,v

instantaneous protection,v earth-fault protection.

Power supply: 110, 220 V AC 50/60 Hz.

This test kit is common to the Masterpact,Compact NS, C, CM ranges.


33/72


34/72Merlin Gerin14


auxiliaries

electrical operatingmechanismAdded to the manual charging mechanism,a motor charges and automaticallyrecharges the stored-energy spring uponbreaker closing making possible fastO-C-O cycles.Opening and closing operations areinstantaneous.The manual mechanism remains availablefor emergency use.

The electrical operating mechanismincludes:c the gear motor(MCH);c a closing release (XF);c a shunt release (MX) or an undervoltagerelease (MN) for opening;c "springs charged" limit switch changeovercontact (CH).

The addition of the electrical operatingmechanism does not alter circuit breakerdimensions.

characteristics geared motor MCH

power supply 50/60 Hz (V) 100/127 - 200/240 - 250/277 - 380 - 415 - 440 - 480

consumption (VA) 180

DC (V) 24/30 - 48/60 - 100/125 - 200/250

consumption (W) 180

motor start-up surge 2 to 3 In for 0.1 scharging time 3 to 4 s

013282


35/7215Merlin Gerin

operation counter(CDM)With gear-motor option only. The operationcounter is read from the front and gives thetotal number of breaker operating cycles.

035932


36/72Merlin Gerin16


auxiliaries(cont.)

Shunt release (MX)This release instantaneously opens thebreaker when energised. The supply can be

maintained or automatically disconnected. Inthe latter case, the user can series connectan internal auxiliary contact (OF).

releasesTwo types of voltage releases can be used

for remote opening of Masterpact circuitbreakers.

Undervoltage releasesc instantaneous (MN)This release instantaneously opens thebreaker when its supply voltage drops belowa value between 35 % and 70 % of its ratedvoltage.If the release is not energised, the breakercannot be closed (either manually ofelectrically). Any attempt to close will haveno effect on the main contacts.Closing is possible when the release voltagereaches 85 % of its rated value.c time delayed (MNR)

To prevent the breaker tripping in the eventof transient voltage dips, this release has abuilt-in time delay.

A special version, available on request,allows instantaneous tripping (from amushroom-head emergency off button) bythe wiring of an external contact.

closing release (XF)This device releases the breaker closingmechanism when the spring is charged.Energisation can be maintained, as theclosing release provides an antipumpingfunction.

Note: anti-pumping function:After the breaker has been opened, either byfault trip or by manual or electrical operation,anti-pumping is provided by requiringcancellation of the initial closing commandbefore reclosure of the breaker is possible.The closing release is supplied on requestwith the manual operating mechanism

(1) 500/525 V AC not available for MNR.

(2) MNR: DC, 125 V only.

016813

036051

Release combinationsEach Masterpact circuit breaker can beequipped with:1 MX + 1 MN + 1 XF, or2 MX + 1 XF

characteristics undervoltage and shunt releases closing release

MN MNR MX XF

breaker response time 90 ms 5 0.5 s-0.9 s 50 ms 10 70 ms + 10, 15at Un 1.5 s-3 s i 3 200 A

80 ms 10 > 3 200 A

operating thresholds

opening from 0.35 to 0.7 Un 0.7 to 1.1 Un

closing 0.85 Un 0.85 to 1.1 Un

power supply

AC 50/60 Hz (V) 100 -110/127 -200 -220/250 - 277 - 380/415 -440/480 -500/525(1)

consumption (VA) 20

DC (V) (2) 24 - 30 - 48 - 60 - 100/110 - 125 - 200/220 - 250

consumption (W) 15


37/7217Merlin Gerin

Changeover switches to indicate "connected"position "CE"

Double break changeover switches "OF"

auxiliary switchesIn addition to the main contact position

indication on the front, 3 auxiliary switchblocks are available to indicate the open andclosed breaker positions.c standard: 4 contacts (O) (2 normallyopen 2 normally closed);c optional: 4 directly-operated doublebreak changeover switches (OF) whichoperate only when the minimum isolatingdistance between the main contacts is

reached;c optional: 24 additional changeoverswitches (OFSUP block). Thesemicroswitches can be parallel connected inpairs to increase the rated current andbreaking capacity (in drawout version only).

"ready to close" contact(PF)Optional:This contact simultaneously indicates thefollowing:cthe breaker is open;cthe stored-energy mechanism is charged;cthe mechanism is correctly reset;cthe breaker opening pushbutton is notlocked;cno opening order is present.

This contact can be series connected to theclosing release (XF) to disable the anti-pumping function.

connected/disconnectedposition carriage switchesIn addition to the local "connected/test/disconnected" position indicator, two seriesof optional carriage switches are availablefor the fixed chassis (of drawout circuit

breaker).ca block of 4 changeover switches toindicate "connected" position (CE);ca block of 2 changeover switches toindicate "disconnected" position (CD). Thedisconnected position is indicated only whenthe minimum isolating distance betweenmain and auxiliary circuits has beenreached.By series connection of these contacts thetest position can be indicated.c1 changeover switch to indicate "test"position (CT).

contact characteristics

"spring charged"contact (CH)In addition to the local mechanical indicatorand the "ready to close" contact, the gear-motor limit switch changeover contact can

indicate that the operating mechanism isready (spring charged). This contact issupplied as standard with the gear motor.

fault-trip indication (SDE)As standard and independent from the

differentiated fault indications on the controlunit, any fault-trip is indicated by:c1 fault-trip indicator/reset button;c1 changeover contact (SDE).The reset button must always be pressed

after a fault-trip to enable breaker closing.Optional: automatic reset, allowing remotebreaker closing without local resetting (theSDE contact operates up to the reset).

auxiliary contacts type O OF OFSUP SDE PF CE CD CT CH

quantity changeover 4 24 1 1 4 2 1 1

NO 2 NO

NC 2 NC

current rating (A) 10 10 10 10 10 10 10 10 10

breaking capacity 110 V 15

AC 50/60 Hz (A rms.) 240 V 10 10 10 10 10 10 10 10 10

pf u 0.3 380 V 6 10 6 5 5 6 6 6 6480 V 6 10 6 6 6 6 6

600 V 3 6 3 3 3 3 3

DC (A) 48 V 3 5 3 3 3 3 3 3 3

L/R i 0.01 s 125 V 0.5 3 0.5 0.3 0,3 0.5 0.5 0.5 0.5

250 V 0.25 3 0.25 0.15 0.15 0.25 0.25 0.25 0.25

500 V 0.5

016814

018242

016524

Additional changeover switches ("OFSUP" block)


38/72Merlin Gerin18

a: partitioning fixture (AC)b: interphase barrier (EIP)

Fixed portion of drawout circuit breakers with arc chute andterminal shield

035928

Fixed portion of drawout circuit breakers with safety shutters

safety shutters (VO)Optional: mounted on the fixed portion of

drawout breakers, the safety shuttersautomatically block access to thedisconnection contacts when the breaker isin the disconnected or test position (degreeof protection IP 20).


accessories

terminal shield (CB)Optional: attached to the fixed portion ofdrawout circuit breakers, this cover preventsaccess to the electrical auxiliary connectionterminals.

arc chute cover (CC)Optional: attached to the fixed portion ofdrawout circuit breakers or on the fixedcircuit breaker, this cover eliminates thesafety clearance requirement above thebreaker (this option is incompatible with frontconnection on top).

interphase barrier(EIP)Optional: attached to the fixed portion ofdrawout breaker (Masterpact i M40 3P), theinsulated partitions for vertical installationbetween connection pads to:c reinforce insulation at connection points ininsulated busbar installation;c prevent arc propagation to the breaker inthe event of a line side fault on the mainbusbars.

partitioning fixture (AC)Optional: attached to the fixed portion ofdrawout breakers (except when equippedwith front connections), this fixture providesIP30 partitioning between the breakercompartment (accessible from the front) andthe connection zone (located in the rear). Itsimplifies partition cut-outs.

Example of partition cut-out forMasterpact M08 to M32.

shutter lock (VVC)Optional: mounted on the fixed portion of

drawout breakers, a mobile and lockableslide (padlocks not supplied) is used to:c lock the shutters in the closed position;,c hold the shutters in the open position.A support is provided at the back of theframe to hold the slide when not in use. Asecond slide is supplied:c on request for Masterpact i 3200 A ;c in standard for Masterpact 4000 Ato 6300 A.

360

445 (3 ples) et 560 (4 ples)

60

plan de fixationchssis

rfrence

445 (3 pole) and 560 (4 pole)

chassisfixing

datum

016818

013280

a b

28518


39/7219Merlin Gerin

Auxiliaries for drawout version

Auxiliaries for fixed version

016814

door frame (CDP)Optional: fixed to the cublicle door, this

frame provides an equipment seal function(degree of protection IP 405).Suitable for fixed and drawout patterns.

Earth connection

The earth connection terminal (drawoutpattern) is on the left hand side of thechassis. It is marked with the symbol t

transparent cover (CCP)Optional: hinge-mounted and equipped with

a screw-closure, this cover is designed forthe door frame (CDP). It provides a degreeof protection of IP549.Suitable for fixed and drawout patterns.

016819

auxiliaries connectionFixed version

Connection by one or two plugs,disconnectable and accessible from the front(screwless tunnel terminals for flex cable upto 2.5 mm2).

Drawout versioncstandard: connection to a terminal blockin the front of the fixed frame (screwlesstunnel terminals for flex cable up to2.5 mm2).The breaker auxiliary circuits are connectedby connection blocks that operateautomatically to isolate the auxiliaries whenthe breaker is in "disconnected" position.On request, an additional 5-way terminalblock (BS) is available to provide fivecommon points.coptional: by one or two plugs,disconnectable and accessible from thefront, installed on the mobile part of theassembly.

"Connected/disconnect/test" positioncontacts

Installed on the fixed chassis, these contactsare directly connected by 6.35 mmconnectors.

015561

breaker mismatchprotectionOptional: for drawout version only, thissystems allows only correctly matchedbreakers (rating, type wiring, etc.) to beinserted in a given fixed frame.

Two matching parts (1 for the fixed chassis

and 1 for the mobile assembly) can be usedto create 20 different user selectedcombinations.

035940


40/72Merlin Gerin20

"disconnected","connected" and "test"

position locking (1)

Mounted on the frame and accessible withthe cubicle door locked, this system is

available in two versions:c "disconnected" position locking;v as standard by 1 padlocking device (1 to 3padlocks not supplied),

voptional: by a locking device with 1 or 2Profalux key locks;c "disconnected", "connected" and "test"position locking (optional);v by 1 padlocking device, with 1 to 3padlocks not supplied (VEC),v by 1 locking device, with 1 or 2 Profaluxkey locks (VSPEC),

padlocks 1 keylock 2 keylocks

"disconnected"standard

"disconnected" "disconnected"standard optional

"disconnected" "disconnected" "disconnected"standard optional optional

"disconnected,connected"

"disconnected, "disconnected,connected" connected"

"disconnected, "disconnected, "disconnected,connected" connected" connected"

pushbutton locking deviceOptional: this padlockable device (padlocks

not supplied) prevents direct operation of thecircuit breaker by covering the "on" and "off"pushbuttons. This locking device can also beused for lead sealing.


accessories (cont.)

(1) keylock typesProfalux B24 D4ZRonis 1351 BKirk CN22-12Caste ll SK7113/1Trayvou L1P1E

"off" position lockingdeviceOptional: a Profalux key lock locks thebreaker in "off" position by holding thepushbutton in its depressed position.

pushbutton locking deviceby padlocks (not supplied) VBP

"off " position locking device (1)

1 Profalux key lock VSPA1

2 Profalux key locks, identical profiles VSPA2

adaptation fixture for 1 Profalux key lock, lock not supplied VSPRAC

On request

1 Ronis key lock VSRA1

2 Ronis key locks, identical profiles VSRA2adaptation for 1 Castell key lock, lock not supplied VSCA

adaptation for 1 Kirk key lock, lock not supplied VSKA

Remarksc the keylocks are of the captive key type,i.e. key free when locked;c Profalux and Ronis keylocks can be usedtogether;c a second Profalux or Ronis lock, identicalto the one mounted on the chassis, can besupplied separately.

035932

035931


41/7221Merlin Gerin

016817

"disconnected" position lockingby padlocks (not supplied) as standard

1 Profalux key lock VSPC1

2 Profalux key locks, identical profiles VSPC2

2 Profalux key locks, different profiles 2 VSPC1

adaptation fixture for Profalux key lock (lock not supplied) VSPRCC

On request

1 Ronis key lock VSRC1

2 Ronis key locks, identical profiles VSRC2

2 Ronis key locks, different profiles 2 VSRC1

adaptation fixture for Castell key lock (lock not supplied) VSCC

adaptation fixture for Kirk key lock (lock not supplied) VSKC

adaptation fixture for Trayvou key lock (lock not supplied) VSTC

"disconnected", "connected" and "test" position lockingby padlocks (not supplied) VEC1 Profalux key lock VSEPC

2 Profalux key lock, different profiles 2 VSEPC

On request

1 Ronis key lock VSERC

2 Ronis key locks, differents profiles 2 VSERC

adaptation fixture for Castell key lock (lock not supplied) VSECC

adaptation fixture for Kirk key lock (lock not supplied) VSEKC

door interlockOptional: mounted on the chassis, this lockprevents the cubicle door from being openedwhen the breaker is in the "connected"

position. If the breaker is put into the"connected" position with the door open, thelatter can be closed without disconnectingthe breaker.

racking interlockOptional: this lock prevents insertion of thebreaker racking handle when the cubicledoor is open. It can be defeated by pressingon the unlocking mechanism.

withdrawal/spring chargedinterlockOptional: this lock prevents withdrawal of

the breaker from the chassis when thesprings are charged.Incompatible with MN or MNR release.

a: racking interlockb: door latch

door interlock

right-hand side VPECD

left-hand side VPECG

racking interlock VPOC

withdrawal/spring charged interlock VEAA

a b


42/72


43/7237Merlin Gerin

E33080

1

1

2

3

3

3

automatic source-changeover system with 3 devicesA Masterpact automatic source-

changeover system with 3 devices ismade up of:1 - 2 circuit breakers QN1 and QN2

connected to the "Normal" source;2 - circuit breaker QR connected to the

"Replacement" source;3 - mechanical interlocking system by rods;

for such applications (consult us)automatic control of the system can be

provided by adding:4 - 2 electrical interlocking unit IVE;5 - auxiliaries control plate ACP;6 - controller BA or UA.

Each Masterpact circuit breaker isequipped with:

c a motor mechanism;c a shunt release (MX);c a "ready to close" contact (PF);c a block of 4 changeover switches (OF);c an additional terminal block (BS) and ablock of 4 "connected" position switches(CE) for source-changeover systems made

up of drawout breakers.

without controller In this case, the automatic control system to

initiate changeovers between the Normaland Replacement sources underpredefined conditions must be provided bythe customer.

Note that we can provide diagrams for thedesign of various automatic control systemsfor different sources.

with controller (consult us)

E33383

R

N

N

R

auto

stop

manu

UN

ON /I

OFF/ O

fault

UR

ON /I

OFF/ O

fault

UN=O

UN=1

MERLING

ERIN

STOP gen

erator

N

R

test

B

U

S

Test

MERLINGE

RIN

multi9

P25M

660V

AC3-IEC

292-1

0.OFF

Test

MERLINGE

RIN

multi 9

P25M

660V

A C3-IEC

292-1

0.OFF

4

5

6

R

N

N

0,5s

R

0,5s

UN

ON/ I

OFF/O

fault

UR

ON /I

OFF/ O

fault

UN=O

UN=1

MERLING

ERIN

stop

manu

N

test

R

In this case, conditional changeoversbetween the "Normal" and "Replacement"sources are initiated by a Merlin Gerincontroller.


44/72Merlin Gerin38


automatic source-changeover systems (cont.)

mechanical interlock selection

025184

025186

mechanical interlocking byconnecting rods for 2 or 3

stack-mounted breakersThis involves:c 2 or 3 Masterpact circuit breakers and/orswitch-disconnectors;c an adaptation fixture on the right side ofeach breaker;c 1 or 2 sets of connecting rods with no-slipadjustments;The various parts are mounted by the user.The changeover system with interlocking byconnecting rods is also available in a versionwhich is factory mounted on a steel frame.

Maximum distance between fixingplanes: 900 mm.

mechanical interlocking bycables for 2 side-by-sidebreakersThis involves:c 2 Masterpact circuit breakers and/orswitch-disconnectors;c an adaptation fixture on the right side ofeach breaker;c a set of cables with no-slip adjustments;The various parts are mounted by the user.

Distance between fixing planes:c maximum: 2 000 mm;c minimum: breaker height with arc chutecover (see pages ????).

device combinationsAll combinations are possible: fixed anddrawout versions, three-pole and four-pole,different ratings, circuit breakers or switch-

disconnectors.All control units can be used on the circuitbreakers.

assembly and installationThe various parts of the Masterpactautomatic source-changeover system aremounted and connected by the user. Nocircuit breaker modifications are required.

The wiring diagrams are shown on pages??? to ???.The Masterpact automatic source-changeover system may also be supplied

factory-wired and mounted on a metalframe.


45/7239Merlin Gerin

power circuit possible combinations configuration type cat. No.

interlocking with 3 breakers3 sources, only one breaker closed

interlocking with 3 breakers2 sources + 1 coupling

E30737

E30738

E30739

electrical interlocking 685363

automatic controlwith generator set 688784

with permanent "Replacement" 688942source

interlocking with 2 breakers Q1 Q2

0 0

0 1

1 0

E30736

Q1 Q2

Q1 Q2 Q3

Q1 Q2 Q3


automatic source-changeover systems (cont.)

automatic control: typical configurations

The electrical interlocking system andautomatic control system for multiplesources must be wired by the user. It must

be used in conjunction with the mechanicalinterlocking system.Typical wiring configurations are availableon request. See examples below. For otherconfigurations, consult us.

Necessary auxiliaries and accessoriesTo implement the configurations below, eachMasterpact circuit breaker must be equippedwith:

c a motor mechanism (MCH);c a shunt release (MX);c a closing release (XF);

c a "ready to close" contact (PF);c a block of 4 changeover switches (OF);c an additional terminal block (BS) and ablock of 4 "connected" position switches(CE) for changeover systems includingdrawout breakers.

Option with "lockout after fault"With this option, the circuit breaker must bereset manually after a fault trip.

interlocking with 3 breakers2 "Normal" sources + 1 "Replacement"source

Q1 Q2 Q3

Q1 Q2 Q3

0 0 0

1 0 0

0 0 1

1 1 0

0 1 0

automatic control with permanent"Replacement" sourcewith lockout after fault 685366

without lockout after fault 688183

automatic control with generator set

with lockout after fault 689642without lockout after fault 689644

electrical interlocking

with lockout after fault 688188


Q1 Q2 Q3

0 0 0

1 0 0

0 1 0

0 0 1

Q1 Q2 Q3

0 0 0

1 0 0

0 1 0

0 0 1

1 1 0

0 1 1

1 0 1

electrical interlockingwith lockout after fault 688189


automatic control 689651


46/7240Merlin Gerin


automatic source-changeover systems (cont.)controller option selection

Used together with the auxiliaries controlplate ACP, controllers BA and UA initiate theautomatic changeover operations according

to the status of the "Normal" and"Replacement" sources.

E32704

E32705

E32703

InstallationTwo possibilities:c mounted directly on the auxiliaries controlplate ACP.

c mounted on the front of the switchboard.The distance between the controller and the

auxiliaries control plate must not exceed2 metres. The interconnection wiring mustbe done by the customer.

terminal block and electrical interlocking unit: IVE

R

N

N

R

auto

stop

manu

UN

Documents

ACB-Masterpact