TDT GIS 36 kV - Antapacay 25580-220-3PS-ESI1-00001

Bechtel Confidential

© Bechtel Corporation 2010 Contains confidential and/or proprietary information to Bechtel and its affiliated companies which shall not be used, disclosed or reproduced in any format by any non-Bechtel party without Bechtel’s prior written permission. All rights reserved

BECHTEL CHILE LTDA.

TECHNICAL SPECIFICATION

25580-220-3PS-ESI1-00001

FOR 36 kV GAS INSULATED SWITCHGEAR (GIS).

FOR

ANTAPACCAY PROJECT – TINTAYA EXPANSION

1 11-Feb-10 Re- Issued for Project Use RV RT EF BP CEZ

0 19-Ene-10 Issued for Project Use RV EBV EF BP CEZ

B 20-Nov-09 Issued for Approval EBV EVG EF BP CEZ

A 29-Oct-09 Issued for Coordination EBV EVG EF BP CEZ

REV DATE REASON FOR REVISION BY CHECK EGS PE PEM CLIENT

XSTRATA BECHTEL

ALLIANCE

JOB N° 25580

TECHNICAL SPECIFICATION N°

25580-220-3PS-ESI1-00001

Page 1

REV

1

THIS DOCUMENT SUPERSEDES

25429-220-3PS-ESI1-10001-000

Specification 36 kV GIS Switchgear

25580-220-3PS-ESI1-00001-001

Electronic documents, once printed, are uncontrolled and may become outdated. Refer to the electronic documents in Infoworks/STO-XSTRATA-25429 for current revisions.

Bechtel Confidential © Bechtel 2010. All rights reserved.

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TABLE OF CONTENTS

Section Title Page

1.0 GENERAL .............................................................................................................3 2.0 CODES AND STANDARDS ..................................................................................3 3.0 GENERAL REQUIREMENTS................................................................................4 4.0 DESIGN AND CONSTRUCTION REQUIREMENTS.............................................4 5.0 TESTING AND INSPECTION .............................................................................17 6.0 TRAINING ............................................................................................................22 7.0 QUALITY CONTROL...........................................................................................23 8.0 PACKING AND SHIPPING..................................................................................23 9.0 SPARES..............................................................................................................23

APPENDICES Appendix A International Standards


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1.0 GENERAL 1.1 This specification covers the design, manufacture and testing of metal-enclosed, Gas

Insulated (GIS) switchgear in accordance with IEC standards for use in an electrical system of 33 kV.

1.2 The gas insulated switchgear and auxiliary equipment shall be the Seller's latest

design, proven in service to meet the requirements and intent of this specification, the Material Requisition, and the attachments.

1.3 All components and materials shall be new, unused, and of current manufacture by

generally recognized well-established firms in the industry. Replacement parts required for normal maintenance shall be readily available from stock.

1.4 All references to “Data Sheets” in the Material Requisition and this specification refer

to the Data Sheets that are attached to the Material Requisition.

2.0 CODES AND STANDARDS 2.0 The switchgear shall be designed, manufactured and tested in accordance with the

latest applicable sections of the IEC standards including those listed in Appendix A. 2.1 The Seller shall replace the word ‘should’ with the word ‘shall’ wherever it appears in

the referenced standards. 2.2 Any conflicts between the referenced documents shall be identified to the Buyer in

writing for resolution. In general the order of precedence shall be:

• Material Requisition/Purchase Order

• Data Sheets (where used)

• Single Line Diagram and schedules

• This Specification

• Local Regulations and Codes

• Referenced Standards

2.3 Compliance with the referenced standards does not relieve the Seller of responsibility to supply switchgear and accessories of proper design, capable of fulfilling the operational guarantees of the equipment at the stated service conditions, and compliance with the established regulations and codes in effect at the point of use. Any conflict between the standards, Data Sheets, and this specification shall be brought to the attention of the Buyer.


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2.4 GIS equipment shall conform to the requirements and recommendations of IEEE Std. 693 “Recommendations for the Seismic Design of Substations”. The Seller shall certify that the equipment has been designed for the seismic service conditions specified in the Data Sheets.

3.0 GENERAL REQUIREMENTS

3.1 The switchgear described in this specification is intended for continuous duty at the specified ratings under the specified ambient conditions 24 hours a day, 365 days a year unless indicated otherwise.

3.2 The switchgear shall have a design life of at least 30 years. Design life shall include availability of spare parts for the product supplied.

3.3 The electrical arrangement of the switchgear, including protection, metering, control, interlocking (other than the manufacturer’s standard safety interlocking), and inter-tripping, shall be as shown on the single line diagrams.

3.4 Equipment ratings shall be selected from the standards listed in Appendix A, and any special requirements shall be indicated in the Data Sheets. The Manufacturer’s standard designs and arrangements are preferred, subject to the approval of the Buyer. Equipment shall be suitable for operation at the site elevation as stated in the Data Sheets.

4.0 DESIGN AND CONSTRUCTION REQUIREMENTS 4.1 Supporting structures for switchgear bays and termination modules associated with

cable connections or transformer connections shall be supplied by the Seller. 4.2 Except for ends with transitions to other types of equipment, switchgear shall be

arranged to permit future extension at both ends without drilling, cutting or welding on the existing equipment. Addition of equipment shall not require the removal or dislocation of existing equipment bays.

4.3 Internal arcs shall be limited by subdividing the equipment into individual arc- and gas-

proof compartments that shall, as a minimum, include the following:

• Bus bar(s) and Bus bar isolators

• Circuit Breaker

• Voltage transformers 4.4 The switchgear enclosure must be capable of withstanding the thermal effects of an

internal arc at the full withstand rating of the equipment for the duration specified on the Data Sheets.


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4.5 Interlocks shall be provided to prevent incorrect or unsafe operation of the equipment.

Interlock mechanisms shall be mechanical where possible and manual operators shall be provided with labels that give clear instructions and are readily visible.

4.6 Switchgear shall be designed and constructed to facilitate inspection, cleaning, repair

and maintenance and to ensure absolute safety during such work. The arrangement of the switchgear shall provide adequate access and clearances around the equipment for maintenance and operation.

4.7 Except for the case of expansion fittings in bus bars, aluminum or aluminum alloys

shall be used exclusively for gas filled enclosures. Joints of dissimilar metals which could lead to corrosion shall be avoided.

4.8 Operating devices, push buttons, lamps and indicating instruments shall be located

above 0.7 m and below 1.8 m from the finished floor level unless otherwise agreed to in writing by the Buyer.

4.9 The switchgear and its support framework shall be designed for the seismic zone

specified without permanent damage, deformation of parts, or any resulting mal-operation which would be destructive to the switchgear or to other equipment which is connected to the switchgear. The Seller shall provide facilities for bolting the switchgear to the electrical room floor.

4.10 The connection between all switching device contacts and the operating mechanism

shall be such that drive is positive in all directions and under all conditions. Positively driven indication of the position of all switching devices shall be provided for all positions and shall be conspicuously located in the operational area of the switchgear.

4.11 Each circuit shall be provided with test facilities to allow for:

• Voltage testing of the circuit with all parts connected to the facility compatible with the full test voltage for cables that can be connected to the switchgear.

• Protection testing using both primary and secondary current injection

• System Phasing

4.12 Seller shall specify the type, required quantity, and operating pressure for any gas filled compartment or equipment. The maximum acceptable rate of leakage shall be 0.5% per annum at the nominal filling pressure. Connections between switchgear modules shall be sealed with O-rings. All gas compartments shall be fitted with moisture absorbing filters and such filters shall be capable of absorbing the by-products of arcing in compartments containing switching devices.


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4.13 Quick acting filling couplings shall be provided for compartments suitably arranged to avoid inadvertent gas loss. Couplings shall be corrosion resistant and suitable for use with the fill gas.

4.14 All gas compartments shall be fitted with filter material which absorbs the residues and

moisture inside each medium voltage compartment. Filters in gas compartments with switching devices shall also be capable of absorbing the gas decomposition products resulting from the switching arc. To provide adequate safety in case of maintenance, the gastight bushing must be able to withstand twice the service gas pressure at one side against 0 bar (absolute) on the other.

4.15 If in spite of all safety measures an arc should occur, the following is required:

• The effects of an internal arcing fault must be limited to the related gas compartment.

• Each gas compartment must have its own pressure relief device to provide instant and safe discharge of accidental overpressure during an internal arc. Rupture diaphragms shall be preferably used as pressure relief mechanisms. Such gas discharge must be directed away from the normal operation position of the switchgear so that persons standing there are not endangered. If necessary, diverter nozzles shall be provided to ensure that the gas is directed away from this position. Internal relief devices between adjacent compartments are not acceptable.

• All earthing connections must remain operational.

4.18 Circuit Breakers

4.18.1 Circuit breakers shall be fixed, three phase type. 4.18.2 Vacuum circuit breakers shall be used and the insulating medium surrounding

these and other live parts shall be SF6. 4.18.3 Circuit breakers shall be stored energy spring type, electrically operated with motor-

spring operation and be provided with an anti pumping facility in the circuit breaker closing circuit. Pneumatic or hydraulic mechanisms are not acceptable.

4.18.4 The operating mechanism shall be capable of a complete O-0.3s-CO-3min-CO

sequence per IEC standard. Tripping of the circuit breaker shall be possible in the event of drive motor failure or loss of auxiliary voltage supply.

4.18.5 Mechanical indicators shall display the position of the main contacts of the circuit

breakers.


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4.18.6 The circuit breakers are intended for extended mechanical endurance. The number of permissible mechanical operations is 10,000 (class M2 IEC 62271-100).

4.19 Isolators

4.19.1 Isolators shall be three-phase motor operated type. Motor auxiliary voltage shall be

as indicated on the Data Sheets. 4.19.2 Isolator switch position shall be displayed locally by mechanical indicators directly

connected to the drive mechanism shaft. 4.19.3 A minimum of four normally open (NO) and four normally closed (NC) mechanically

coupled auxiliary switches shall be provided for remote indication and interlocking purposes. All auxiliary contacts shall be wired to terminal blocks for Buyer connections.

4.19.4 The isolator and its associated earthing switch shall be mechanically interlocked. 4.19.5 The isolator shall be capable of hand crank operation. Insertion of the hand crank

shall disable the electrical operation of the isolator.

4.20 Earthing Switches

4.20.1 Earthing switches shall be three-phase motor operated type. Motor auxiliary

voltage shall be as indicated on the Data Sheets. 4.20.2 Earthing switches shall only be operable from the switchgear local control panel

location, and interlocking shall be provided to prevent earthing live equipment. 4.20.3 Earthing switches on feeders shall be equipped with high-speed operating

mechanisms and fault making contacts. 4.20.4 Bus bar earthing switches shall be supplied with sufficient auxiliary contacts to

provide positive position indication to the other bays of the switchgear for interlocking purposes and for remote indication. Alternative methods may be employed, but will be subject to the approval of the Buyer. All auxiliary contacts shall be wired out to terminal blocks for Buyer connections.

4.20.5 The earthing switch shall be capable of hand crank operation. Insertion of the hand

crank shall disable the electrical operation of the earthing switch. 4.20.6 Earthing switch position shall be displayed locally by mechanical indicators directly

connected to drive mechanism shaft and by view ports for direct observation of the contact.


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4.21 Bus Bars

4.21.1 Bus bars and connections shall be manufactured from electrolytic copper. Both the conductors as well as the contacts for the conductor connections shall be designed for the continuous rated current of the switchgear under the ambient conditions specified and shall not exceed the permissible temperature rise stated in the Data Sheets.

4.21.2 The three phase bus bars shall be enclosed either in a single gas filled

compartment or individual compartments per phase as dictated by the manufacturer’s standard design and/or rated voltage. The final configuration of available alternatives is subject to the approval of the Buyer.

4.21.3 All bus bars and connections shall be sized, braced and supported to withstand the

mechanical forces and thermal effects resulting from the switchgear rated short circuit current and carry certification from a recognised Testing Authority. Thermal rating for all current carrying parts and insulating materials shall be a minimum of 1 second for the rated short time withstand current.

4.21.4 Double bus bar systems shall be supplied with a bus coupler breaker if required by

the Material Requisition or the Data Sheet. Associated bus bar isolators shall be used to facilitate bus transfer operations. The bus coupler shall have the same continuous current rating as the bus bars.

4.22 Primary Terminations

4.22.1 Termination modules shall be provided by the Seller for connection to transformers as indicated on the drawings and Data Sheets. The final configuration shall be subject to the approval of the Buyer.

4.22.2 Cable or transformer termination modules shall provide the means for isolating the

cable or transformer bushing from the switchgear in order to allow for Hi-pot testing. 4.22.3 The switchgear shall be suitable for either plug-in type or bar type terminations as

indicated on the Data Sheets


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4.23 Instrument Transformers

4.23.1 All instrument transformers shall be suitable for continuous operation at rated and

short-circuit conditions and under the ambient conditions specified on the Data Sheets.

4.23.2 Current transformers shall be either toroidally wound, ring-type or encapsulated

block-type, and shall be mounted external to the gas enclosure. Current transformers shall be of the single or multi-ratio type with either one amp or five amp secondary windings as indicated on the one line diagrams and/or Data Sheets.

4.23.3 Current transformer secondary terminals shall be brought outside of the high-

voltage enclosure to a dedicated terminal box, mounted on the switchgear structure in an accessible location for each bay. All secondary leads, including intermediate taps of multi-ratio current transformers, shall be wired to shorting type terminals in the low voltage control cubicle of each bay. Each current transformer secondary winding shall be earthed via a sliding link isolation terminal in the local low voltage control cubicle. Unused cores (not connected to a secondary load) shall be shorted across the full secondary winding.

4.23.4 Current transformer ratios and accuracy classes shall be as indicated on the one

line diagrams and/or Data Sheets. 4.23.5 Voltage transformers shall be housed in a separate enclosure and shall be

mounted either directly on the switchgear or remote from the switchgear using a cable connection. In either case, the connection to the high voltage terminals shall be made with plug-in type connectors. Equipment design shall allow flexibility in mounting the voltage transformer on either side of the isolator, and all secondary windings shall be connected to Buyer terminal blocks in the associated bay low-voltage control cubicle. Primary and secondary ratios and accuracy classes shall be provided as indicated on the one line diagrams and/or Data Sheets. Each voltage transformer secondary winding shall be earthed via a sliding link isolation terminal in the local control cubicle.

4.23.6 The Seller shall confirm (by calculation) the adequacy of the selected accuracy limit

factor of each current transformer based on the normal current loading, specified short circuit current, current transformer ratios and the Seller’s connected burden for all protective relaying required in the Material Requisition.


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4.24 Low Voltage Control Circuits 4.24.1 Local control functions shall include

• Switchgear interlocking functions

• MCB’s for low voltage equipment protection and isolation

• Local operation of the switchgear

• Indicating and measurement equipment 4.24.2 Control equipment shall be located in the local control cubicle of each bay. These

cubicles shall form an integral part of the switchgear supply, have a degree of protection of at least IP31.

4.24.3 The equipment shall be supplied with one or two trip coils as indicated on the Data

Sheets. In the case of dual trip coils, the trip coil control circuits shall be electrically independent, and all trip coils shall be electronically monitored to insure integrity and functionality. Trip coil monitors shall provide isolated output contacts for local and remote alarm indication. The trip circuit(s) shall be directly connected to the associated auxiliary supply without overcurrent protection or other isolating means.

4.24.4 Low voltage control circuits shall be designed to operate continuously at the supply

voltage indicated on the Data Sheets. Each equipment bay shall be wired to allow connection to two external auxiliary control supplies corresponding to the number of trip coils supplied. The last device in each auxiliary distribution circuit shall be a voltage monitoring relay with two Form-C contacts wired to Buyer terminal blocks for external alarms. Terminal blocks shall be provided in each bay for connection to Buyer’s external auxiliary supply and shall be sized to accommodate the Buyer’s specified wire size as indicated on the Data Sheets.

4.24.5 All control circuits other than the trip circuits shall be supplied with two-pole

miniature circuit breakers to provide isolation from the auxiliary supply to which they are connected, and shall be sized to properly coordinate with the Buyer’s upstream auxiliary supply protection device. These circuit breakers shall be supplied with one normally closed auxiliary contact which shall, in turn, be connected in series with other auxiliary contacts to provide a common bay “MCB Tripped” alarm.

4.24.6 Switchgear control shall be interlocked to provide absolute protection to prevent

potentially harmful operation of the switchgear, and the logical operating sequence of the circuit breaker, isolators, disconnectors and earthing switches shall be such as to inhibit unsafe operations. Such interlocks may be hard wired, electrical, electronic, or a combination of these and, in the case of the latter two, failure of the interlocking device(s) shall revert to a “safe” operating mode. Interlocks shall be active regardless of local or remote operation of the equipment. The Seller shall


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provide a complete set of logic diagrams for Buyer review prior to construction of the equipment.

4.24.7 Facilities for local control of the switching devices shall be provided by a local

operator control panel in each bay low voltage control cubicle. The local operator control panel shall be equipped with an integrated key switch to allow bypassing of the bay interlocks by the maintenance operator.

4.24.8 Independent gas compartments shall be monitored by gas density monitors with

two-stage operation, the first stage providing alarm contacts, and the second stage providing lockout of switching circuits under conditions of insufficient gas density for safe operation of the equipment. Indicating gauges shall be provided at the front of each bay or in the local low voltage control cubicle for monitoring the condition of the gas in each compartment. The Seller shall provide a common gas pressure alarm per bus (open on alarm), wired to terminals in the control section of the incoming cubicles, for Buyer’s use.

4.24.9 Anti-condensation heaters shall be provided in the local control cubicle and in the

operating mechanism housings of switching devices as indicated on the Data Sheets.

4.25 Earthing 4.25.1 All metallic non-current carrying parts of the switchgear and its supporting

framework shall be bonded together by the Seller as per the Seller’s standard design. Connection points in the form of welded, drilled and tapped earthing pads or threaded earthing bosses shall be provided by the Seller to allow connection to the Buyer’s safety earthing system.

4.25.2 The doors of all auxiliary cubicles shall be bonded to the main structure of the

enclosure by means of a flexible copper connection arranged so that it cannot be damaged when the door is opened or closed.

4.25.3 Provision shall be made adjacent to the cable termination for connecting cable

armor to the switchgear earthing system.

4.26 Auxiliary Power and Control Wiring 4.26.1 Power and control wiring shall be PVC-insulated, flame retardant, 600V switchboard

wire with fine-stranded copper conductors. Minimum cross sectional area shall be 1.5 mm2 for control wiring and a minimum of 2.5mm2 for current and voltage transformers.

4.26.2 Power and control wiring within the switchgear shall be securely held in position

(either loomed or run in plastic wireways). Seller shall adequately size all wireways to accommodate internal wiring and field cabling as necessary.


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4.26.3 Wiring identification shall be by number and/or letter imprinted, interlocking ferrules

of insulating material, and shall be located adjacent to the terminals. The ferrules shall be indelibly marked and removal without disconnecting the wire from its terminal shall not be possible.

4.26.4 Flexible cables shall be used for connections to door mounted equipment. Wiring

shall be loomed/wrapped in flexible PVC conduit and be firmly clamped at both ends to prevent movement at terminations.

4.26.5 All wiring for external connections shall be brought out to individual terminals on a

readily accessible terminal block. Terminal blocks shall be of a high-density design that allows multiple connections to the same electrical node with no more than one wire per connection. Jumper links between adjacent terminals, where required, shall be of the terminal manufacturer’s design. Other jumper links shall be made with conductors conforming to the requirements of 4.26.1 and identified as indicated in Section 4.26.3 above. Wire ends for control wiring shall be fitted with crimp on ferrules.

4.26.6 A minimum of 20% spare terminals shall be provided on each terminal block for

buyer’s use.

4.27 Metering, Protection, and Control 4.27.1 Metering, protection and control shall be provided as shown on the single line

metering and relaying diagram and/or as required in the Data Sheets. 4.27.2 Metering and protection devices shall be housed on the front face of the control

panels. Panels shall be designed to be bolted together into a suite, with enclosed sides included only on the panels at each end of the suite. Panels shall be designed for front access only, with apparatus requiring rear access or visual inspection mounted on a swing frame on the front of the panel.

4.27.3 Unless otherwise indicated on the Data Sheets, integration of bay control and

protective relaying into a common device is preferred. The control functions shall include the following capabilities:

• Provide the means for programming logic functions for control and interlocking

• Provide for inter-bay communications with other bay controllers of the switchgear

• Provide a connection port for programming using the Seller’s application software

• Provide a system port using the communications protocol indicated in the Data Sheets for remote communications to, and control capability from a remote, centralized facility

• Provide synchronization capability from an external GPS clock


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• Provide a sufficient number of digital inputs, suitable for continuous operation at the specified auxiliary voltage, as required to implement the control and status logic

• Provide a sufficient number of discrete, isolated relay outputs for operation of the switchgear and signalling purposes

• Provide loss of communications detection for any of the communications ports, in addition to the failure of the device itself, via isolated alarm contact(s)

• Provide a front-panel LCD screen for an interactive mimic diagram of the switchgear, including control functions and measured values

• Provide internal configurable logic to associate digital inputs with relay outputs for control and interlocking purposes

4.27.4 All primary protective relays shall be of the digital, multifunction, numerical type

unless otherwise indicated in the Data Sheets, and shall incorporate the following features as a minimum:

• Provide the protection functions indicated on the metering and relaying one line diagrams and/or Data Sheets

• Provide variable setting groups to cater for changes in network configuration

• Provide a connection port for programming using the relay manufacturer’s application software (supplied by Seller)

• Provide synchronization capability from an external GPS clock

• Provide internal configurable logic to associate protection functions with discrete relay output contacts and front panel LED indicators

• Provide two independent relay output contacts for each trip circuit

• Provide oscillographic records with selectable pre- and post-fault recording intervals

• Provide an auxiliary port for uploading oscillographic records via Ethernet LAN utilizing the relay manufacturer’s analysis software (supplied by Seller)

• Provide for selectable protection functions (from the available set of functions available in the purchased model). Functions that are not selected shall not require configuration.

• Provide front-panel reset capability to extinguish fault LEDs and reset lock-out function

• Provide LCD readout of measured values, alarms, and fault indications 4.27.5 Bus bar protection, when specified, shall be of the low impedance, numerical type,

and shall be arranged in either a centralized or distributed configuration. In the case of a double bus bar configuration, the bus bar protection system shall provide for replicating the bus bar zone configuration using auxiliary contacts from bus bar isolators without the need for current transformer zone switching. If a distributed bus bar protection system is used, the individual bay units shall be interconnected to the central unit using fiber optic patch cords (provided by Seller) and shall be located in the low voltage control cubicle of the switchgear bay. The bus bar protection system


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shall be housed in one or more free-standing panels complying with the requirements indicated in Section 4.27.2. The central unit shall provide the facility for fault indication via front panel LED indicators and detailed fault information via an LCD readout. Bay units shall provide selectable back-up overcurrent and breaker failure protection and shall be capable of operating autonomously in back-up mode in case of communication failure with the central unit. Communication and/or device (either central or bay unit) failure shall initiate alarm contacts for remote indication.

4.27.6 Protective relays shall be flush-mounted and withdrawable from their enclosure, either

in total or on a plug-in printed circuit board (PCB) basis. In either case, removal of the draw-out component(s) shall not require the removal of external wiring from the chassis, and shorting contact shall be provided as an integral feature of the relay case to insure that the CT is shorted when the draw-out or current carrying PCB is withdrawn. The dimensions of flush mounted devices shall not impede the swing frame opening over its full travel.

4.27.7 Protective relaying circuits shall be equipped with a means of secondary injection,

either in the form of test blocks or test switches, which provide for shorting and isolation of the CT secondary and isolation of trip circuits. If more than one protection relay is supplied from a single CT, the test block or switch shall provide isolation and bypass of the intermediate relay without affecting the operation of the end relay.

4.27.8 Digital instruments are preferred where separate metering is required. If the use of

analogue instruments is specified on the Data Sheets, external zero adjustment shall be possible without dismantling the instrument. Ammeters shall be scaled such that full load corresponds to between 50 and 80% of the angular deflection.

4.27.9 If the switchgear is used at the point of coupling to the external Utility grid, the type of

metering and the associated accuracy requirements shall be in compliance with the Utility requirements as specified on the Data Sheets. Utility metering provided in facilities with internal generation shall be capable of bi-directional operation.

4.27.10 Instrument transformer windings used for metering purposes shall have metering

accuracy classes as indicated on the Data Sheets. 4.27.11 Instrument transformers shall be supplied with a nameplate in accordance with IEC

60044-1 and IEC 60044-2 for current and voltage transformers, respectively. For current transformers under gas, the nameplates shall be affixed in a conspicuous location to the exterior of the gas filled chamber housing the CTs, and shall indicate the CT orientation with regard to terminal markings.

4.27.12 Measuring transducers shall be of the universal type with configurable outputs as

indicated on the Data Sheets. Seller shall provide transducer manufacturers configuration and analysis software for installation on Buyer’s supplied portable PC.


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Communications capability via the protocol specified shall be provided when required on the Data Sheets. Local connection to the device shall be via serial RS232 connector, with an option for remote communications via RS485 interface when required. Transducers shall be wired to shorting/isolation terminal blocks to allow testing or removal without disturbing other devices connected to the measuring transformer(s).

4.27.13 All protection relays shall be fully configured by Seller prior to factory acceptance

tests, and shall provide the functionality detailed in the single line diagrams and elsewhere. A complete set of software and manuals shall be provided by the Seller for the protection relays supplied. The supplied software shall include both relay configuration and fault analysis capabilities and shall operate in the Microsoft Windows

® environment.

4.28 Labels

4.28.1 Labels shall identify switchgear cubicles, compartments and components. Nameplates, rating plates and labelling of equipment and wiring shall be in accordance with the relevant IEC Standards. Functional unit label designations shall be located at front and rear of each bay, and shall be constructed of laminated engraved black and white plastic with black lettering approximately 20 mm high giving the designations shown on the single line diagram.

4.28.2 All devices including relays, meters, push buttons, lamps, fuses, contactors, and timers

shall be clearly labelled to indicate their purpose. Relay labels shall reflect the configured protection functions using IEEE Standard function codes. Labels shall be positioned to provide easy identification and correspond to the designation on the Seller’s drawings. Such labels shall have minimum lettering sizes of approximately 6 mm high for labels external to control cubicles, auxiliary enclosures, and relay panels, and 4 mm high for labels internal to these enclosures. Internal labels shall be secured adjacent to the equipment but not on removable covers. They shall be positioned to allow replacement of labels, equipment or fixings, and may make use of a durable proprietary labelling system unless specifically indicated otherwise. MCB labels shall include the rating of each device in addition to identifying marks.

4.28.3 Door mounted devices shall be labelled next to the device on both sides of the door.

4.28.4 External labels shall be engraved on laminated plastic and attached with stainless steel

machine screws into tapped holes. Where the label is longer than 100 mm, holes shall be elongated and provided approximately every 100 mm.

4.28.5 All main components of the switchgear shall be supplied with nameplates complying

with the requirements of Section 5.10 of IEC 60694 and IEC 62271-203 and as otherwise supplemented in the Data Sheets.


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4.28.6 Labels shall have black characters on a white background. Danger labels shall have

white characters on a red background. Warning labels shall have black characters on a yellow background.

4.29 Finish 4.29.1 The color and finish shall be in accordance with the Manufacturers standards for the

service conditions specified in the Data Sheets unless the Data Sheets indicate otherwise.

4.30 Accessories

4.30.1 A complete set of special tools required for operation, maintenance and testing of the switchgear shall be provided.

4.30.2 Seller shall provide an initial filling of the switchgear with SF6 gas for all gas tight

compartments of each switchgear bay to facilitate factory acceptance testing. A supplemental filling shall be supplied by the Seller for filling/topping up compartments and bus enclosures requiring evacuation during switchgear assembly and testing on site.

4.30.3 Seller shall provide one complete set of test plugs, adapters, and connecting leads

required by the relay manufacturer for testing of the relays via the test blocks or test switches indicated in Section 4.26.5

4.31 Drawings and Data 4.31.1 The Seller shall provide drawings and data in accordance with the requirements of

Section 3 of the Material Requisition, and shall include the following categories:

• Type Test certificate (with quotation)

• Equipment outline and elevation drawings including operational and maintenance clearances (preliminary with quotation)

• Equipment weights, total and per shipping unit (with quotation)

• Certification for equipment use in Seismic Zone indicated on Data Sheet (with quotation)

• Equipment heat load (with quotation for each bay type)

• Equipment static and dynamic loads (with quotation)

• GIS earthing requirements - off equipment, to be supplied by Buyer in his facility (with quotation if special requirements are applicable)

• Single Line, logic, schematic, and connection diagrams


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• CT saturation curves

• Nameplate Information

• Operations and Maintenance manuals

• Mechanical Catalogue

• Accuracy Limit Factor calculations based on supplied protective relays

• One set of instruction manuals for all relays supplied in digital PDF format (CD).

• One lot of setting/configuration and analysis software from the relay manufacturer in digital (CD) format (Microsoft Windows© compatible) for numerical relays

4.32 Arc Resistant 4.32.1 Switchgear assemblies shall be designed, manufactured and tested in accordance

with the applicable sections of the latest edition of IEC 62271. 4.32.2 Switchgear shall be provided with arc-resistant designs or features at the freely

accessible exterior (front, back, and sides) of the equipment 4.32.3 Light, sound, and/or pressure detection shall be provided when indicated on the data

sheet. 4.32.4 Partial discharge monitoring shall only be provided when indicated on the data sheet. 4.32.5 Facilities for Remote control shall be provided for operation of switching elements.

5.0 TESTING AND INSPECTION

5.1 Test Certificates 5.1.1 Tests and test conditions shall be in compliance with the referenced IEC standards

and local codes and standards. Equipment shall be classified IAC and Type Test certified per Annex-A of IEC 62271-200.

5.2 Customer Witness 5.2.1 The Buyer reserves the right to witness the following tests at the Seller’s facility:

• Routine tests on the switchgear as specified in the relevant standards (refer to Appendix A)

• Functional tests of control circuitry as specified in the relevant standards


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• Integrated functional testing of protective relaying systems by primary injection of current and voltage as agreed. These tests may be deferred until site acceptance testing depending on the availability of relay/control panels at switchgear manufacturer’s facility as agreed by the Buyer. If an integrated test cannot be performed at Seller’s facility, a separate factory acceptance test of the relay panels shall be scheduled by Seller at the relay panel builder’s facility.

• Type Tests if required in the Data Sheets. Type test reports shall be supplied regardless of testing requirement, and type test reports for similar equipment shall be supplied with the tender if such tests are not specifically required in the Data Sheets.

5.2.2 Certificate(s) for witnessed tests shall be available for signature on the day of the tests.

5.3 In-Process Inspections 5.3.1 The Buyer reserves the right to inspect switchgear at the Manufacturer's works at any

time to verify compliance with this specification. 5.3.2 The completed switchgear shall be subjected to all routine tests as prescribed in the

applicable IEC standards and any special tests indicated on the Data Sheets. These tests shall be conducted at the Sellers facility and in the presence of the Buyer or his representative.

5.4 Type and routine testing

Tests made on representative samples that are intended to be used as part of routine production. The applicable portions of these “Type Tests” may also be used to evaluate modifications of a previous design and to ensure that performance has not been adversely affected. All equipment proposed according to this specification must have been type tested at typical units in accordance with the latest revision of relevant IEC Standards. An evidence of type testing shall be submitted with the proposal.

The following type tests shall have been performed: Dielectric voltage withstand tests Power frequency withstand voltage Basic Impulse withstand voltage Level (BIL) Switching Impulse withstand voltage Level (SIL) (if applicable) Circuit breaker and disconnect switch open–gap withstand voltage Making and breaking capability test Short time current test and peak current test Mechanical and electrical endurance test Continuous current carrying and temperature rise test


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Current path resistance measurement Pressure tests Partial discharge test Electromagnetic compatibility tests (EMC) Circuit breaker tests Disconnect switching tests Instrument transformer tests Enclosed surge-arrester tests Grounding switch tests

5.5 Routine or Production tests

Production tests should be made in the course of components assembly and at the complete or shipping assembly state. Tests should include, at a minimum, the following:

5.5.1 Pressure test performed on all individual enclosures.

Circuit breakers tests : Operation with minimum and maximum control voltage Visual checks of closing and opening operations (five each) at specified minimum and maximum control voltage. Timing test for "C","CO" and "O-CO" Measurement of closing and opening time. Measurement shall be carried out at rated stored operating energy (at pump-off) and at minimum stored operating energy (at CO block). Operating test of magnetic release: Visual check of magnetic release at minimum supply voltage (70% of rated voltage). Operating test of pump motor (if applicable): Visual check of pump motor at minimum supply voltage (85% of rated voltage). Hydraulic leak test: Visual check of hydraulic system. No visible leakage is permitted. Measurement of the resistance of the main circuit (voltage drop test): The measurement per phase shall be made with a current of ≥ 200 ADC. Check of auxiliary and control circuits Power frequency withstand test on control and auxiliary circuits. The test voltage shall be 2000 V for 1 min. No flashovers are permitted. Tests on disconnect switches and ground switches Visual check of fifty operating cycles at rated supply voltage Visual check of ten operating cycles at specified maximum voltage Visual check of ten operating cycles at specified minimum voltage Current transformer tests Power frequency withstand tests on secondary windings Power frequency withstand tests between sections


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Power-frequency withstand voltage test on primary winding and measurement of partial discharges Test for accuracy Verification of terminal markings Voltage transformer tests Power frequency withstand tests on secondary windings Power frequency withstand tests between sections Measurement of partial discharges (150% of rated max. phase voltage) Test for accuracy Verification of terminal markings Tests on transport units GIS modules or components shall be assembled in the factory to transport units. The size of the transport units shall be defined by engineering and shall be as large as practical for shipment to the site and handling during installation. On assembly units without support or barrier insulator dielectric tests are not necessary. The following tests are to be carried out on each transport unit : Dielectric voltage withstand tests: Tests shall be in accordance with the IEC Standards 60694, 62271-203 and 60060. For these tests, all gas compartments shall be filled with SF6 gas at minimum operation pressure. Power frequency voltage tests of the main circuit: The transport unit shall be subjected to a test voltage of 60 Hz for 72 sec. The test voltage level shall be as IEC 60694 standard. Partial discharge test:

All internal portions of the GIS system shall be tested for partial discharge at 150% of the rated maximum voltage on the downward excursion of voltage from the power frequency withstand voltage.

Extinction of the partial discharge must occur above the 150% point. The measured value shall be lower than 5 pC. Measurement of the resistance of the main circuit: The measurement per phase shall be made with a current of ≥ 200 ADC. The reading shall be given in "mV". The measured value depends on the arrangement of the transport unit. This value shall not exceed the calculated sum of the maximum voltage drop of the single modules and the connection units used. Gas leakage test: This test shall be carried out for each transport unit. The test unit shall be filled with the rated SF6 pressure and checked with a leakage detector. All flanges, bolted joints and gas fittings shall be checked.

5.6 Field Testing

The following tests shall be performed on the completely assembled switchgear at


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site after installation. Test results as well as test conditions like ambient temperature, gas pressure, dew point and all necessary conditions shall be documented and the results compared with the relevant instructions and factory test reports. A final site test report shall be supplied to the Owner within 4 weeks after the tests have been finished.

The following shall be inspected and verified: Conformity of the assembly with the manufacturer's drawings and instructions. Tightening of all pipe junctions, bolts and terminal connections. Visual check of all control circuits, PT circuits, and CT circuits. Copy de nameplate of PT’s, CT’s and lightning arresters Proper function of the control, measuring, protective and regulating equipment including heating and lighting by means of the relevant commissioning reports. Mechanical operation tests of Circuit Breaker, Disconnecting switch, earthing switch and fault making earthing switch. Rated SF6 gas pressure and control voltage: O-CO operation, 10 times. Maximum control voltage: O-CO operation, 3 times Minimum control voltage: O-CO operation, 3 times Mechanical test (SF6 gas leakage test) The following parts shall be checked, using a leakage detector for SF6 gas indication: Each flange connection installed on site Each gas coupling Each bursting disc DC resistance measurement of the main circuits: The measurement per phase shall be made with a current of ≥ 200 ADC and the values compared with the results of the factory routine tests. The reading shall be documented per phase and the measuring points defined. Gas density monitor check Measurement of moisture content: The moisture test (dew point measuring) shall be made on > 10% of the SF6 gas compartments 3-4 weeks after gas filling. The moisture level shall then be within the specified level. Interlock test Operational Tests Manual operating check of circuit breaker, disconnect switch, earthing switch and fault making earthing switch. High voltage dielectric test of main circuit: After the completion of installation and filling with SF6 gas at its rated density, the GIS shall be tested with 80% of the AC voltage applied for the factory routine tests. Test duration shall be 1 minute.


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During these tests, the high voltage connections like overhead lines, HV cables or transformer connections shall be disconnected. These tests shall be performed by means of special HV testing equipment connected to the GIS. The special testing equipment and special test adapters for flange connection (if required) shall be supplied by the manufacturer for temporary use during the tests. Each switching condition during the tests including the connection point of the test transformer shall be documented in copy of the single line diagram. Inductive voltage transformer tests Dielectric test of control circuit at 2 kV r.m.s. for (1 min)

5.7 Pre-commissioning and Commissioning The Supplier shall provide:

Competent representatives in the field to assist in the handling, assembling and installation equipment. Competent representatives for pre-commissioning to support in the components and drive system testing and to assist with the commissioning. Buyer requires experienced field representatives with prior projects on gearless drives. Buyer will have the right to require a replacement in case of irresolvable differences. Quote per diem rates and conditions for services for qualified installation supervisors and commissioning engineers, along with their recommendations as to the number of people and the length of time needed.

6.0 TRAINING

For operation and maintenance of the electrical systems, it is Buyer’s intent to rely on their own personnel to the maximum extent possible. Training is required to bring the Buyers qualified operators and engineers up to date in the operating, troubleshooting and servicing of the equipment covered by this specification. It will be the joint responsibility of the Buyer and Supplier to implement this requirement. Supplier shall state in proposals, what kind of formal training courses are available in English and Spanish in use at the plant, what the entrance requirements are, and the course durations. Recommendations shall be given along with the reasons for such suggestions, and whether these formal instructions shall preferably take place in the Supplier’s training centers and/or on the job-site. The use of the integrated power and control package makes it desirable to have Buyer’s personnel train on their own equipment during and after the pre-commissioning and testing of the containerized equipment. Supplier shall quote such a training course, together with a brief description of training activities


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7.0 QUALITY CONTROL 7.1 See section 5 of the Material Requisition “Supplier Quality Surveillance”.

8.0 PACKING AND SHIPPING 8.1 See section 7 of the Material Requisition “Packing, Marking and Shipping Instructions”.

9.0 SPARES 9.1 See section 1 of the Material Requisition “Scope of Works”.


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APPENDIX A

INTERNATIONAL STANDARDS

IEC STANDARDS IEC 60044 Instrument transformers IEC 60068 Environmental testing IEC 60073 Basic and safety principles for man-machine interface, marking and identification –

Coding principles for indication devices and actuators IEC 60137 Insulating bushings for alternating voltages above 1000V IEC 62271 High-voltage switchgear and controlgear – Part 100: High-voltage alternating-current

circuit-breakers IEC 62271 High-voltage switchgear and controlgear – Part 102: Alternating current

disconnectors and earthing switches IEC 62271 High-voltage switchgear and controlgear – Part 200: AC metal-enclosed switchgear

and control gear for rated voltages above 1kV and up to and including 52 kV IEC 60255 Electrical relays IEC 60269 Low-voltage fuses IEC 60445 Basic and safety principles for man-machine interface, marking and identification -

Identification of equipment terminals and of terminations of certain designated conductors, including general rules for an alphanumeric system

IEC 60529 Degrees of protection provided by enclosures. (IP Code) IEC 60617 Graphical symbols for diagrams. IEC 60694 Common specifications for high-voltage switchgear and controlgear standards. IEC 60947 Low-voltage switchgear and controlgear IEC 61000 Electromagnetic compatibility (EMC) IEC 62271 High-voltage switchgear and controlgear – Part 1: Common specifications for high-

voltage switchgear and controlgear standards IEC 60470 High- voltage alternating current contactors and contactor -based motor starters.

IEC 61243-5 Voltage detecting systems (VDS)


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IEC 60099 Surge arresters

IEC 60071 Insulation co-ordination

IEC 60376 Specifications and acceptance of new SF6

IEC 60480 Guide to the checking of SF6 taken from electrical equipment

IEC 61936-1 Power installations exceeding 1 kV

IEC 60721-3-3 Classification of environmental conditions

ANSI/IEEE STANDARDS

IEEE Std C37.2 IEEE Standard Electrical Power System Device Function Numbers and Contact

Designations IEEE Std. 693 Recommendations for Seismic Design

Documents

TDT GIS 36 kV - Antapacay 25580-220-3PS-ESI1-00001