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접지방식5.1
- 139 -
55.1
.
5.1.1.
(IEC 60364). ,
5.1 . (1) : ,
. 5 5.1.6 . : 0 . :
: (2) : (6) (1) TN
.
5.1 (6) (7)
제 장 접지방식5
- 140 -
: ,
(3) : ,
-----
:
- ,- , , ,
(5) : (6) :
(bar)
.1)
,,.
, (6). ,
.
2)
, ,.
3)
.
접지방식5.1
- 141 -
.5.1 ,
.
1
( , ) , , , ,( , , , )
, ,
,
Ⅱ
제 장 접지방식5
- 142 -
5.1.2/ 2
.
.
..
PE.
..
, , ,.
.. TT ( )
5.2 ..
..
접지방식5.1
- 143 -
5.2 TT
. TN ( )5.3 TT .
. TN.
5.3 TN-C
. TN-C5.3 ,
(PEN) . 10 mm2. TN-C PEN , 3
TN-C. PEN
..
) TN-C “ ” “ ” . PEN,
.
제 장 접지방식5
- 144 -
. TN-STN-S 5.4 ,10 mm2 TN-S .
.. (PE) (N) (5 )
10 mm2.
5.4 TN-S
. TN-C-STN-C-S 5.5 5.6 .
TN-C TN-S . TN-C-S, TN-C (4 ) TN-S (5 ) .
.
5.5 TN-C-S
접지방식5.1
- 145 -
5.6 TN-C PEN
. IT1) IT
5.7. .
5.8.
, .5.9 3 3 1 km
3,000 ~ 4,000 Ω.
2) IT5.10 1,000 ~ 2,000 Ω
.. ,
, ,. ,
.
제 장 접지방식5
- 146 -
5.7 IT
5.8 IT
5.9 IT
접지방식5.1
- 147 -
5.10 IT
5.1.3 TT, TN, IT. TTTT
:.
: .TT 5.11 , .
5.11 TT
) ,.
..
..
. 500mA .
제 장 접지방식5
- 148 -
.( RCD) ( ) .
. ,.
. TNTN
- .- . : .TN 5.12 5.13 , .
5.12 TN-C
5.13 TN-S
TN .- .-
, .- .- .- , .
접지방식5.1
- 149 -
TN-C .- .- .- .••
TN-S .- .-
.
. ITIT
--- 2
---
IT 5.14 , .
5.14 IT
*IMD : Insulation Monitoring Device
제 장 접지방식5
- 150 -
.
. / /
. . .
,.
7 7.7.2 .
5.1.4 TT, TN, IT.
., , , .
, 3. , . 5.2
, , ,. ,
. , (SEA)*SEA : System Earthing Arrangements , /
,. .
, ( ) (, )
, 5.3
접지방식5.1
- 151 -
5.2TT TN
-STN-C IT1 IT2
- -- -- + -- IT.
- - - + - IT ,. 2
+/-- - - + - TT ,, .
+ + + + + SEA .+ - - + - RCD
.(RCD) + + + + RCD SEA . TN-C
.
+ + + - + , IT.
+ - - + - .(1
/2 )- + + + + TT
. .
- + + + +TT
. TT.
- - - - - , SEA .+ + - + + PEN
.PE + - - + - PE .
- - - + + IT.
+ - - + - TN-S, TN-C, IT(2 ).
- + + - - TT RCD . ITIMD .
- + + -/+ -/+TT .IT
.- - + - - TN-C
.
- -- -- - -- .+ - - ++ - .
제 장 접지방식5
- 152 -
5.3
( 10 )ΩTT, TN,IT(1)
(30 )Ω TN TN-S IT(1)TN-C
( )( , TV ) TN TT IT(2)
(500 mA ) TN(4) IT(4)TT(3),(4)
TT(5) TN(5),(6) IT(6)
IT TT TN(7)
( ) IT TT TN(8)( , , ,
, ) TN(9) TT(9) IT( ,
, )TT(10)TN-S
IT(10)TN-C(10)
( ,) TN(11) TT(11) IT(11)
( ) TN-S TN-CIT(12bis) TT(12)
Y-Y (13) TT IT IT(13)
IT(15) TN-S(15)TT(15) TN-C(14)
TT(16)
TT(17) TN(18)IT(18)
(, ) TT(19) TN-S TN-C
IT(19)( , PLC) TN-S TT TN-C/ , PLC
(actuator) IT(20) TN-S, TT
(1) SEA ,. SEA ,
. ,.
(2) .. IT
2.
(3)(4) SEA ,
.
접지방식5.1
- 153 -
(5)(6) .(7) TN .
, .(8) - ,
.(9) , SEA
.(10) , .
TT .(11)
. SEA ,.
(12) TT IT 2TN .(12bis) .
(13) . Y-∆.
(14) TN , TN-C .(15) , mA .(16) TT .
. , .(17)(18) . TN
.(19) . 30 mA
TT TN-S . IT.
(20) .
5.1.5 -,5.2 5.3 .
..
, ,.
. ..
./ “ (island)” 5.155.16
.
제 장 접지방식5
- 154 -
5.15 IT TN-S
5.16 TN-S IT
., ,
, ,. ,
.
5.1.6
.Ω
.
: m: mΩㆍ
.
접지방식5.1
- 155 -
.3 .
1) (buried ring)5.17
.. ,
. 4,
.50 cm
.. , 1 m
.(600 1,000 V) .
5.17
: 25 mm2 25 mm2 , 2 mm
: 35 mm2 : 95 mm2 100 mm2 , 3 mm
Ω
: [m]: [ m] ( .)Ωㆍ
제 장 접지방식5
- 156 -
2):
5.18, .
5.18
. . 1 m 2 m ,
. 2 m , 25 mm 15 mm
,2~3 . 1
. 4LΩ
: m: m ( 5.4 5.5 )Ωㆍ: .
접지방식5.1
- 157 -
:
3)5.19 50 cm
, 1 m. .
2 mm 3 mm (1)
(1) ,.
. .( ) .Ω
: m: mΩㆍ
5.19
제 장 접지방식5
- 158 -
.
.5.4
( m)Ωㆍ, 1 ~ 30, 20 ~ 100
10 ~ 150, 5 ~ 100
50100 ~ 20030 ~ 4050 ~ 500200 ~ 3001,500 ~ 5,000
, 300 ~ 500100 ~ 3001,000 ~ 5,000500 ~ 1,000
, 50 ~ 300800
, 1,500 ~ 10,000100 ~ 600
5.5( m)Ωㆍ
, 50, , 500, , 3,000
..
.
1)2 m .
1 m 1~3.
2)10 .
.
접지방식5.1
- 159 -
3)
.-- 1
..
, ,.
4).
.
.
.. ,
.
1)5.20 .
5.20
제 장 접지방식5
- 160 -
,.
85 Hz 135 Hz .,.
.
2) ( 5.21 ),(C)
. (X)(C) (X) ,
(P) . (X) (P).
(X) (P) . (X)(C) (X) (C)
(0) ., (X) (C) 3
(P) , ,(P) , (P) 5 m
. (X) (P)(X) (C) 0.68
.
설비시스템5.2
- 161 -
5.21
5.25.2.1
..,
.
, ., .
. 2.
제 장 접지방식5
- 162 -
- , EMI, , ,, , ,
-
..
., 5.22
5.24 .- (MLVS)- (MCC)--
, ,.
--
.
5.22 (a) - (Prisma Plus P)(b) - (Okken)
설비시스템5.2
- 163 -
5.23 (Prisma Plus G)
(a) Prisma Plus G Pack (b) Kaedra (c) mini-Pragma
5.24
. 2.
,
1). , ,
., ,
.
제 장 접지방식5
- 164 -
2)
.
.- , , ,
. ,.
- .- .- .
Schneider Electric Prisma Plus G P 3,200 A, .
-- IEC 62439
- ,-
5.22(a), 5.23 5.24, 5.22(b) .
3 .
-5.25 , ,
.(plug-in)
.
설비시스템5.2
- 165 -
5.25 (Prisma Plus G)
-5.26 ,
, ..
5.26
제 장 접지방식5
- 166 -
-5.27 ,
..
,.
5.27
..
,. IEC
60439-1 .
IEC 60439-1IEC 60439-1 .
1)IEC 60439-1 . .
.
설비시스템5.2
- 167 -
..
,.
2).
,
.
, , .
3)5.28 ,
.“a” “b” 1 4 . 1 4
. , ..
1 : 2 : 3 : ,
4 : 3
. Prima Plus1, 2b, 3b, 4a, 4b .
제 장 접지방식5
- 168 -
5.28
4).
.
...
, . .----
. Modbus. Modbus (twisted
pair : RS 485) Ethernet-TCP/IP(IEEE 802.3) .www.modbus.org ,
.( )
.
설비시스템5.2
- 169 -
5.2.2;
.1)
.
, .
/. , , , ,
“ ” .
2).
1(G/Y) PE PEN .
2- , 5
“1” .- ,
. 3
5.6 .- (green and yellow)- (green)- (yellow)- (light blue) ; 2
제 장 접지방식5
- 170 -
Ph Ph Pn N PE Ph Ph Ph N PE1 G/Y
2 BL LB LB BL LB
+ G/Y BL G/Y
33 BL BN GY
2 + LB BL BN LB2 + G/Y BL LB G/Y+ LB G/Y BL LB G/Y
43 LB BL BN GY LB
+ 3 G/Y BL BN GY G/Y2 + + LB G/Y BL BN GY LB G/YPEN 3 G/Y BL BN GY G/Y
5 3 + + LB G/Y BL BN GY LB G/Y>5 : G/Y - : BL
“1” .G/Y: + BL: : 3 LB: BN: (Brown), GY:
) ,.
---
, G/Y. 5.29
.
설비시스템5.2
- 171 -
5.29
3)5.30, .
5.30
.--IEC 60364-5-52
.
제 장 접지방식5
- 172 -
. (IEC 60439)
.40 5,000 A∼
..
.5.31 .
( ,, , ) .
.
5.31 25 4,000 A∼
.
. , ,.
설비시스템5.2
- 173 -
5.323 .
, ., 1,600/2,000 A . ,
.. 1,000 5,000 A ,
150 kA .
.- ,
. 20 70 kA 100 1,000∼ ∼A .
- , ,. 10 40 kA 40 400 A∼ ∼
.
.--
100 5,000 A (riser)∼.
제 장 접지방식5
- 174 -
.
-, ,
, , , . , 25 A40 A , 1.5 m
.-
, , , ,(false ceiling) . , 20 A
, 1.5 m 3 m .
. : , , , : , , , 3 : , , , ,
.IEC 60439-2 .
(, , ) IEC 60439-2
13 .
.
.1)
.
.
. .
설비시스템5.2
- 175 -
2) .
. . 50 %
. .
. , ,.
, .
3) . (fool-proof) .
4)
.( ) .
. .
5) . 5.33
1/3 . . PVC . .
제 장 접지방식5
- 176 -
5.33 Example: 30 m of canalis KS 250A equipped with 10 25 A, four-pole feeders
. (Canalis).
IP55 160 A 1,000 A∼
, , “VDI”( , ,)
. ,
(RoHS) .
. (Canalis)
5.34 : Canalis KDP(20 A)
설비시스템5.2
- 177 -
5.35 : Canalis KBA, KBB(25, 40 A)
5.36 : Canalis KBX(25 A)
5.37 : Canalis KN(40 160 A)∼
5.38 : Canalis KS(100 1,000 A)∼
제 장 접지방식5
- 178 -
5.39 : Canalis KT(800 1,000 A)∼
5.3 (IEC 60364-5-51) ( ) (IP), (IK)
.
5.3.1,. ,
. “ ”. IEC 60364-5-51
.
5.3.2,
, .
.
. (A, B, C).
- A :- B :- C :
외적 영향5.3
- 179 -
..
..
. ( )IP(international protection)
. , IPX .: IP XXB.
AC2 .A :AC : -AC2 : - 2,000 m>
5.3.35.7 IEC 60364-5-51 ,
.
제 장 접지방식5
- 180 -
A -
AA1 -60 +5AA2 -40 +5AA3 -25 +5AA4 -5 +40 ( )AA5 +5 +40AA6 +5 +60AA7 -25 +55AA8 -50 +40
% g/m3
AB1 -60 +5 3 100 0.003 7 .AB2 -40 +5 10 100 0.1 7AB3 -25 +5 10 100 0.5 7AB4 -5 +40 5 95 1 29AB5 +5 +40 5 85 1 25AB6 +5 +60 10 100 1 35 .AB7 -25 +55 10 100 0.5 29AB8 -50 +40 15 100 0.04 36
AC1 2,000 m<AC2 > 2000 m ( )
AD1 IPX0AD2 IPX1 IPX2AD3 IPX3AD4 IPX4AD5 (hose) IPX5AD6 ( , , ...) IPX6AD7 150 mm ,
1 m IPX7AD8 IPX8
외적 영향5.3
- 181 -
AE1 IP0XAE2 2.5mm IP3XAE3 1mm IP4XAE4 IP5X :
IP6X :AE5
AE6 IP6X
AF1AF2AF3 ,AF4AG1AG2AG3AH1AH2AH3
AH1AH2AH1AH2AM1 , (interharmonics)
IEC .
AM2AM3AM4AM5AM6AM7AM8AM9AM21AM22 nsAM23 msAM24AM25AM31AM41
제 장 접지방식5
- 182 -
AN1AN2AN3AP1AP2AP3AP4AQ1AQ2AQ3AQ1AQ2AQ3AQ1AQ2AQ3B-BA1BA2BA3BA4BA5
BC1IEC 61140BC2
BC3BC4BD1 /BD2 /BD3 /BD4 /BE1BE2BE3BE4C-CA1CA2CB1CB2CB3CB4
외적 영향5.3
- 183 -
5.3.4 : IP IK. IPIP 5.40 , IEC60529 IP . .----) IP 72.5 kV .
5.40 IP
제 장 접지방식5
- 184 -
. IPIP 5.41 .
5.41 IP
. IKIEC 62262 5.8
IK .
외적 영향5.3
- 185 -
5.8 IKIK (J) AG00 001 0.14≤02 0.20≤ AG103 0.35≤04 0.50≤05 0.70≤06 1≤07 2≤ AG208 5≤ AG309 10≤10 20≤ AG4
. IP IKIP IK IEC
60364-5-51.- ( AE)- ( AD)- ( )- ( BA)Prisma Plus . ,
Schneider Electric 5.9 5.10 IPIK .
. IP
IP303154/55
. IK5.10 IK
IK0708( )10