Section 13 — Electrical

Medium Voltage Vacuum Switchgear

IPE Engineering Practice IPE-EP-13-5-2

Document number: IPE-EP-13-5-2 · Section: 13 — Electrical

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SCOPE

This Practice, including the Medium Voltage Vacuum Switchgear Data Sheet (EP 13–5–2DS), covers the minimum requirements for assemblies of medium voltage, indoor and outdoor, walk– in sheltered maintenance aisle, and non walk–in outdoor type switchgear with ratings of 5KV, 15KV or 35KV, 3 phase, 3 wire, 60 hertz, for operation on either ungrounded, low resistance or solidly grounded systems as specified on the Data Sheet. Switchgear shall conform to this Practice, unless written approval is obtained from the Owner for exceptions.

This Practice is appropriate for attachment to an inquiry or purchase document when accompanied by the referenced IPE Engineering Practices and completed Data Sheets.

Any deviation from this Practice must be approved by the procedure described in EP 1–1–3. A revision bar indicates all changes made to this Revision.

REFERENCES

All applicable sections of the latest standards and codes listed below are a part of this Practice unless amended herein.

STANDARDS AND PUBLICATIONS

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DEFINITIONS

Contractor – Company or business that agrees to furnish materials or perform specified services at a specified price and/or rate to the Owner.

Inspector – A Inflection Point Engineering, LLC appointed engineer or inspector.

Manufacturer – The recipient of a direct or indirect purchase order for materials and/or equipment. In this context, a direct order is one issued to a Manufacturer by a Contractor or the Owner. An indirect order is one issued to a Manufacturer by a vendor (recipient of a direct order) for materials, fabricated components, or subassemblies.

Owner – Inflection Point Engineering, LLC.

Owner’s Engineer – A Inflection Point Engineering, LLC appointed engineer.

Purchaser – The party placing a direct purchase order. The Purchaser is the Owner’s designated representative.

SERVICE CONDITIONS

Medium voltage switchgear assemblies shall perform satisfactorily when operated indoors or outdoor in a walk–in, sheltered maintenance aisle housing, or outdoor non–walk–in enclosure, either intermittently or continuously in an atmosphere typical of petroleum plants. Unless otherwise noted on the Medium Voltage Switchgear Data Sheet, the switchgear assemblies shall be for use in a 104ºF maximum ambient, –22ºF minimum ambient, and at an altitude of 3300 feet or lower.

DESIGN, CONSTRUCTION AND MATERIALS

Basic Construction

Enclosures

• Each switchgear assembly shall consist of metal–clad, free–standing, vertical, dead–front steel structures containing power buses, power circuit breakers, necessary auxiliary control devices and specified instrument transformers, relays, meters, and control and meter switches as defined in ANSI C37.
• Sheet steel barriers shall be provided between the vertical units, horizontal units in two high construction, and between the control and power compartments.
• Provide hinged rear doors with 3 point latches. Provide separate top and bottom doors for rear cable compartments on two high vacuum switchgear cubicles. Doors for future cubicles in outdoor enclosures shall be insulated and have sheet metal interior covering. Metal covering and insulation shall be easily removable. Provisions for padlocking doors shall be provided.
• Provisions for padlocking breakers in the racked out position only shall be included.
• Enclosed switchgear assemblies shall be self ventilated.
• Switchgear assemblies shall be designed to prevent entrance of rodents, birds and insects.
• Control switches, meters, meter switches, position indicating lights, protective relays, etc., shall be mounted on the front of the switchgear panels and arranged in a logical, symmetrical manner, requiring Owner approval prior to fabrication.

• Equipment Identification/Nameplates
• Externally visible permanent nameplates shall be provided identifying each instrument, instrument switch, meter, relay, control switch, indicating light, potential transformer compartment and circuit breaker compartment. The identification shall be the same as on the drawings. Nameplates shall be lamicoid tags, white with black letters or black with white letters as specified on the Data Sheet (3/8 inch high minimum letter size) secured with screws or reusable plastic rivets.
• Equipment and terminal blocks within the compartments shall be suitably identified and shall have the same identification as on the drawings. Identification shall be made with lamicoid tags, white with black letters or black with white letters as specified on the Data Sheet and secured with glue, screws or equivalent.
• Relays shall be designated as to use and the phase to which they are connected as shown on the one line and three line diagrams.
• In addition to identification nameplates, engraved nameplates shall also be provided on the outside of drawers or doors of drawout potential transformers as follows:
• For motor under voltage relays:

WARNING

OPENING DRAWER (OR DOOR) TRIPS MOTOR

• For undervoltage transfer schemes:

WARNING

OPENING DRAWER (OR DOOR) MAY INITIATE A DEAD BUS TRANSFER AND/OR

DE-ENERGIZE A BUS SECTION.

• These nameplates shall have 3/4 inch minimum size letters on a red lamicoid tag with bold white letters.
• Engraved nameplates shall be provided adjacent to each protective lockout and/or auxiliary tripping relay which trips more than one circuit breaker. Nameplates shall be provided for both front–panel mounted relays and relays that are mounted inside compartments. Nameplates shall be engraved white on a red background with 3/16 inch minimum size letters and shall read:

WARNING

OPERATION OF THIS RELAY TRIPS MORE THAN ONE CIRCUIT BREAKER AS LISTED: BREAKER

BREAKER etc.

• All relay and control nomenclature shall conform to ANSI C37.2
• Bus phasing as well as protective relays shall be laid out and labeled in accordance with ANSI C37 as follows: A, B and C phase arranged from front to back, top to bottom, or left to right, as viewed from the main switching device operating mechanism side.

• Provide a mimic one line on the front of the switchgear lineup. Material to be laminated plastic secured to the front of the cubicle with screws, color to be blue for 15 KV, yellow for

34.5 KV, green for 4.16 KV, white for 2.4 KV, and orange for 480V.

• Future Expansion: Provisions shall be made for the addition of future switchgear cubicle sections at both ends of the equipment with continuation of power buses, ground bus, enclosure, etc.
• Provisions for Handling Storage and Field Erection
• Each “shipping section” shall be furnished with removable steel channel base plates or have a finished base that will permit using pipe rollers or dollies without damaging the frame steel of the equipment.
• Each “shipping section” of stationary structures shall be furnished with removable lifting angles and/or plates suitable for crane hooks or slings so lifting and erection can be done without danger of dropping or damaging the equipment.
• Equipment shall be packed, crated and rigidly braced to protect it from the weather and damage during outdoor storage.
• When specified on the Data Sheets, provisions shall be made for the customer to energize the space heaters of each shipping section during storage at the job site. The electrical connection point shall be readily available without uncrating the equipment and shall be clearly identified as to location and the electrical service requirement.
• All equipment shall be furnished assembled to the extent practicable, and for easy field assembly where factory assembly is not practicable. All nuts, bolts, gaskets and hardware should be furnished together with complete instructions for field assembly. The Manufacturer shall itemize unassembled equipment in bid.
• Space Heaters: Space heaters, when specified on the Data Sheets, shall be provided in each vertical unit to prevent condensation. Space heaters shall be fed by 120 volt A.C., supplied by others. Space heater control shall be by one or more thermostats.
• Painting: The switchgear enclosures shall be cleaned, primed and painted with a minimum of two coats of paint. The final finish for indoor switchgear shall be ANSI No. 61 gray. The final finish for enclosures of outdoor switchgear shall be ANSI No. 61 gray. The seller shall supply one quart of matching paint per assembly of switchgear for field “touch–up” after installation. Paint shall be in aerosol cans with non–CFC propellant and supplied with MSDS sheets. If the Manufacturer’s standard colors are not as specified above, request quote for color specified with an alternate quote for Manufacturer’s standard color.
• Switchgear Arrangement: The switchgear arrangement shall be as shown on the attached drawings. The Manufacturer is encouraged to suggest alternates that result in space savings and/ or cost reduction.
• Equipment to be Furnished: The equipment to be furnished in each assembly and any special instructions will be listed on the Data Sheets.
• Surge suppression arrestors of proper size shall be provided for all vacuum switchgear feeder breakers. Surge arrestor protection shall be located in the switchgear, rear power cable compartments. Arrestors shall be station class zinc oxide, or metal oxide type.
• Outdoor Assemblies (Walk–In and Non–Walk–In)

• Switchgear assemblies for outdoor installations shall be weather and rodent proof, fully gasketed and equipped with lighting, convenience receptacles, and thermostatically controlled unit space heaters. In addition, the overall outdoor enclosure shall have a thermostatically controlled forced air electric heater and adequate ventilation.
• Positive ventilation, when specified, shall be accomplished by a blower such that the temperature in the maintenance aisle will be no more than 5ºF higher than the outside temperature of 95ºF. Blower suction shall be taken near the top of the assembly wall. Thermostat shall be provided in series with a manual on–off–auto switch for fan control.
• Walk–in enclosure aisle width shall permit easy breaker withdrawal and room for breaker maintenance and testing. Entry doors with provision for locking with padlocks shall be provided on each end of the assembly, unless otherwise noted. Doors must permit opening from the inside even when locked.
• Non–walk–in enclosures shall have full height doors in front of each vertical section.
• The undersurfaces of the assembly shall have a heavy, rubberized sealing material, or similar approved anti–corrosion coating.
• Provide separate top and bottom doors for rear cable load terminals. Doors shall be hinged with three point latches and have provisions for padlocking.
• Exterior hardware shall be corrosion resistant material preferably stainless steel, copper– free aluminum or cadmium/zinc–plated steel.
• Medium Voltage Motor Controllers (5KV Class)
• Where medium voltage motor controllers are shown on the Data Sheet and/or single line diagrams as being an integral part of the switchgear lineup, they shall be in accordance with EP 13–6–1, which will be attached and made a part of this Practice.
• Where cubicles housing medium voltage controllers are inserted as a part of the switchgear lineup, integrity of the metal clad sections of the switchgear shall be fully preserved.
• Wiring
• Control Wiring
• Each internal interconnecting wire shall be identified at each end with a plastic sleeve type, or shrink tubing wire identification system stamped with the complete destination address. Tape type wire marks are not acceptable. Wire marks shall match the Manufacturer’s interconnection drawing. Tabular wiring diagrams and wire marks are not acceptable. Wiring diagrams as well as wire marks, device and terminal strip identification shall use a destination address identification system approved by the Owner.
• Stranded #14 AWG (minimum) copper conductors covered with flame retardant wire insulation shall be used. #8 AWG (minimum) shall be used for 125 VDC distribution circuits.
• Compression type terminal lugs with insulated sleeves and spade tongue type (except ring tongue type on all CT circuits) shall be used.
• Terminal blocks shall be suitable for holding spade and ring type lugs. Blocks shall be rated 20 amp, 600V or higher as required. As a minimum, provide 20 percent spare terminal spaces. All spare (unused) terminal spaces shall have screws inserted.
• The terminal blocks for the first termination of current transformers shall be of the shorting type. The terminal block shall be located in the switchgear low voltage compartment and shall be accessible from the front of the switchgear without exposure to energized power voltage equipment.
• The ground connection for current transformers shall be made at the first terminal block, and not at the CT.

• Provide adequate space for customers low voltage wiring. This space shall allow for easy installation and removal of breaker with no danger of causing damage to the wiring.
• Cell switch wiring shall be brought out to terminals, so that it may be easily jumped for test purposes.
• Secondary control wires shall be armored or enclosed in metal troughs where they pass through primary compartments.
• Spare breaker auxiliary switch contacts shall be wired to terminal blocks for future use by the Owner.
• Power Cable Wiring
• Load side feeder cables shall exit the switchgear as indicated on the Data Sheet.
• Power cable racking support shall be provided where long unsupported lengths of cable may exist inside equipment.
• Space, mounting, and electrical connection provisions shall be provided in both incoming (where applicable) and outgoing cubicles for making stress cones on shielded power cable.
• Switches
• Breaker control switches shall not be mounted adjacent to meter switches, and shall have “pistol grip” handles. Locate breaker control switch along vertical center line.
• Meter switches shall have “knurled knob” handles. Ammeter and voltmeter switches shall have an “off” position.
• Selector type control switches shall have “oval” handles.
• When a breaker is specified on the drawings as a “motor control unit”, the breaker shall be provided with a door mounted standard control switch, and a permissive switch. The permissive switch shall be a 3 position selector switch, G.E. SBM type or equivalent. The breaker shall be wired for control from a remote “start–stop” push button or the local control switch as follows:
• “REMOTE” position
• Breaker can be closed or tripped by the Remote Control Station only when the breaker is in the fully connected (or operate) position.
• Breaker can be tripped by the Local Control Switch, but cannot be closed by the Local Control Switch.
• “OFF” position
• Breaker is tripped whenever the permissive switch is in the “off” position.
• Completely disconnects the Remote Control Station, and the Local Control Switch.
• “LOCAL” position
• Completely disconnects the Remote Control Station (Provide cell switches to block remote close and trip circuits when breaker is in test position or drawn out with test plug inserted).
• Breaker can be tripped by Local Control Switch when the controller is in any position.
• Breaker can be closed by Local Control Switch only when the breaker is in the “test” or “disconnected” position.
• Open “knife” switches shall not be used.
• Protective Relays, Meters and Control

• Relaying and metering (type and quantity) shall be provided as shown on the drawings and/or Data Sheet.
• All protective relays and shall be drawout type with built–in test plugs/switches, unless specific non–drawout types are specified on the Data Sheets, drawings, or elsewhere in this Practice.
• Any trip device which does not have a non–automatic–resetting trip target included as an integral part shall have contacts wired to a target relay.
• Remote trip signals shall initiate breaker tripping via an instantaneous auxiliary relay with a non–automatic–resetting trip target.
• Fixed time, time delay relays shall be GE SAM solid state type timer. Agastat type 7000 series may be used only with approval of the Owner.
• Electro–mechanical protective relays shall be utility grade relays manufactured by GE or ABB (previous Westinghouse).
• The protective relay test provision (see 5.4.2) shall permit the shorting of any current transformer and sective disconnection of all other relay input/output items. The test switches, when in the open (disconnect) position shall prevent the relay, or test switch cover/ door from being mounted/closed.
• Electrically operated circuit breakers that are remotely controlled shall have manually reset lockout relays to prevent circuit breaker reclosing when tripped by protective devices.
• Each incoming main and bus section in the switchgear shall be provided with a voltmeter, and a voltmeter switch to determine the incoming line voltage and individual bus voltage. On each phase, the voltmeter switch shall have an “off” position (same for Ammeter).
• When analog instruments (meters) are specified, they shall be switchboard type, taut band, with a minimum 250º scale.
• If remote ammeters are specified, they shall be supplied from current transducers.
• Potential transformer secondary leads supplying remote meters shall be individually fused at the potential transformer.
• Ammeter and voltmeter switches shall have an OFF position.
• Instrument and Control Transformers
• Current Transformers
• Current transformers shall comply with ANSI C57.13.
• Current transformers shall have 5 ampere secondaries and primary ratings as shown on the Data Sheets and/or attached drawings.
• Accuracies shall be in accordance with ANSI Standards for the metering and relay applications shown on the drawings. 1200/5 and larger current transformers shall be C200 class or higher.
• Current transformers shall be mounted in the switchgear stationary part, not on the circuit breakers.
• Feeder breaker line/load relay and metering current transformers shall be located on the bus side switchgear stabs.
• Potential Transformers

• Potential transformers shall comply with ANSI C57.13.
• Potential transformers shall be mounted in a separate compartment or superstructure.
• The transformers shall be mounted on a drawout mechanism that is linked to the potential transformer compartment door. When the compartment door is closed, the transformers shall be completely isolated and the primary and secondary disconnect contacts engaged with their respective stationary contacts to complete the circuit. On opening the door, the transformer shall be automatically withdrawn, breaking the primary and secondary connections and grounding the primary P.T. connections. The primary connection shall be disconnected before the transformer or its primary fuses become accessible. A similar arrangement shall be provided for the primary fuses of control power transformers.
• Potential transformers shall be protected with current–limiting primary fuses, and shall be designed to withstand the basic impulse level of the switchgear.
• Potential transformers shall have 120 volt secondaries and ANSI accuracies and burden capabilities for the duty indicated on the Data Sheets and/or attached drawings.
• Control Power Transformers (Station Service Duty)
• Where a control power transformer (CPT) is specified on the Data Sheets and/or drawings, it shall be rated at the KVA value shown, complete with draw–out primary current limiting fuses and a secondary breaker interlocked with the drawout mechanism on the secondary circuit (See paragraph 5.5.2.3 for details). The CPT shall be sized for the ultimate switchgear and substation auxiliary equipment needs.
• The CPT shall comply with ANSI C57.12.50 for performance, design and characteristics and ANSI C57.12.91 for test methods and compliance.
• The CPT shall have a KVA continuous rating based on not exceeding 115ºC average temperature rise as measured by resistance (185ºC limiting temperature).
• The transformer shall be designed to the same basic impulse level as that of the switchgear.
• It shall be the dry type and shall have the standard one plus and seven minus 1/2% taps.
• The CPT shall be connected to the high voltage bus at the point indicated on the drawings and/or sketches.
• When specified on the Data Sheet, the CPT’s secondary system shall be provided with an automatic transfer switch. The location of the transfer switch shall be as indicated on the Data Sheets. If mounted in the switchgear, it shall be fully accessible from the front of the assembly. The transfer switch shall be an ASCO linear actuated type.
• Power Circuit Breakers
• The power circuit breakers shall be electrically operated, 3 pole, vacuum, drawout type, provided with self–aligning line–side and load–side disconnecting devices.
• The drawout mechanism shall hold the breakers rigidly in the fully connected, test, and fully disconnected positions, with the door closed.
• Interlocks shall be provided that will prevent connecting or disconnecting the breaker from the bus stabs unless the breaker is in the tripped (open) position. Interlocks shall also discharge the stored energy springs when the breaker is fully withdrawn.
• A barrier shutter shall be provided that effectively closes the “bus” and “load” stab disconnect holes when the breaker is withdrawn. The shutter shall have the word “bus” or “load”, as applicable, painted on the shutter in bold, legible lettering.
• Circuit breaker power drawout contacts shall be silver plated.

• Each breaker shall be equipped with the “stored–energy operation” type, anti–pump, trip free, operating mechanism. It shall be possible to open and close the breakers manually, and to “slow close” the breaker for maintenance purposes.
• An operation counter shall be furnished on each breaker.
• Circuit breakers of the same ratings and control voltage shall be completely interchangeable.
• Circuit breaker contact position auxiliary switches and breaker cell position auxiliary switches shall be direct acting mechanically linked limit switches. The use of electric operated auxiliary relays to provide additional contacts is not acceptable. Where use of electric–operted auxillary relays is required because of design and/or space limitations, the Owner shall be advised. Each breaker shall have a minimum of 4 normally open and 4 normally closed unused breaker position and breaker cell position (if applicable) auxiliary switch contacts for the Owner’s use, with wiring brought out to terminal blocks.
• Circuit breaker continuous ampere and nominal MVA rating shall be as specified on the Data Sheets, and shall meet or exceed the ratings as detailed in ANSI C37.06 for indoor oilless circuit breakers.
• All vacuum circuit breakers shall be provided with a mechanical device to allow the breaker to be locked out, with a padlock, in the fully disconnected position only. Device shall be visible from the front of cubicle and readily accessible. The device shall allow the connection of three locks.
• Circuit breaker design shall prevent generation of dangerous transient overvoltages which could damage the insulation of apparatus served when operated. This particularly applies to breakers used as motor controllers and especially when switching inductive currents, such as the locked rotor or starting currents of the motors.
• Switchgear Power Bus
• Switchgear bus shall be copper with tin–plated joints.
• Buses shall be completely isolated and insulated/fully clad with flame retardant, non– hygroscopic, high dielectric insulation. Joints and terminations shall be insulated using boots and/or tapping.
• All outdoor bus 5KV to 34.5KV, and indoor buses rated 15KV and above shall have non– hygroscopic, track resistant, high strength porcelain sleeves and supports. Indoor buses rated below 15 KV shall have nonhygroscopic track resistant cycloaliphatic epoxy and/or high strength porcelain sleeves and supports.
• Buses shall be mechanically braced for the symmetrical short circuit current closing and latching rating of the largest rated MVA breaker in each assembly.
• The size of the main horizontal buses shall be continuous throughout its length and designed to carry the full load current of the largest breaker in the assembly.
• The bus connections to the circuit breakers shall match the breaker rating.
• Load connection pads shall be oriented to allow direct connection of the Owner’s load cables (vertical entry) without having to turn the cables horizontal to the entry direction. Provide pads to accommodate standard two hole double crimp lugs for the Owner’s cable sizes and quantities shown on the Data Sheet.

• Switchgear Control Power
• Control power shall be 125 volts D.C. close and trip. Control power source by others.
• Close and trip circuits on each breaker shall be separately fused.
• Fuse blocks shall have dead front pull out type holders.
• Trip fuses shall be 35 ampere or larger, and close fuses shall be 30 ampere or less.
• Switchgear control power circuits shall be segregated as follows:
• Each main and tie shall have the source provided by a separate (dedicated) circuit.
• Each power bus shall have the source provided by a separate (dedicated) circuit.
• Front Panel Indicating Lights
• Indicating lights shall be of the type specified on the Data Sheet.
• Red “Close”, Green “Open” indicating lights shall be located above each breaker control switch to indicate breaker mechanism position. The red light shall be connected in the control circuit such that it is in series with the breaker trip coil. The green light shall be across the D.C. close circuit, supervised by a 52/b contact, and indicate both breaker position and availability of close power with the breaker in the open position.
• All lockout relays shall have a “white” light for indication identified on the Data Sheet. The white light shall be centered on the lockout relay handle and located above the relay.
• An amber light shall be used to show that motor space heaters are in service (on).
• Bus Duct
• Flanged bus ducts, when specified, shall be furnished as part of each switchgear assembly, to connect the switchgear to the supply transformer. The bus duct shall comply with the requirements specified in EP 13–24–1 and EP 13–24–1DS.
• It shall be the switchgear Manufacturer’s responsibility to coordinate and match the bus ducts to the associated switchgear assemblies and the supply transformers.
• Ground Bus
• A 1/4” x 2”, or larger, copper ground bus shall be provided for the entire length of the switchgear, affording connections to all units and equipped with solderless #2/0 cable connectors at each end.
• The ground bus shall be accessible for workmen’s grounds.
• Ground bus extensions that reach to the front of the rear compartment shall be provided in the top and bottom rear power cable compartments for easy termination of cable shields and arrestor grounds.
• Test and Maintenance Accessories
• Circuit Breaker Accessories: The following circuit breaker test accessories shall be furnished for each switchgear assembly or groups of assemblies in the same switchroom. The quantity of “Accessory Sets” will be specified on the Data Sheets.
• Test cabinet for testing breakers when out of its compartment. Cabinet to be designed for wall mounting.

• 1 - Set of secondary couplers.
• 1 - Hand crank for moving the breaker to the connected, test, or disconnected position.
• 1 - Breaker maintenance closing device.
• 1 - Device for manually charging the operating mechanism.
• 1 - Breaker lift device.
• 1 - Set of all other necessary accessories for breaker maintenance and testing.
• Switchgear Accessories: The following switchgear accessories shall be furnished for each switchgear assembly or groups of assemblies in the same switchroom.
• A manual ground and test device which will perform the following functions (quote item as add/delete):
• Ground the circuit for maintenance work.
• Provide a convenient connection point for applying potential for cable testing.
• Furnish access to bus and line circuits for “Phasing–Out” test.
• Access to bus and line circuit connection must have individual, lockable barrier to prevent access.
• One set of protective relay test jacks/plugs.

TESTING AND INSPECTION

• Testing
• The Manufacturer shall perform all testing specified by this Practice and standard ANSI production tests for all switchgear enclosures, circuit breakers, relay and control circuits. All tests shall be done at the Manufacturers plant, unless directed otherwise by the Owner.
• Testing shall be done on completely assembled equipment using all the contract circuit breakers. Interconnection wiring shall be via actual wiring harness supplied with the job and not temporary test jumpers. In the case of switchgear being supplied in prefabricated substation buildings, the tests shall be performed with the switchgear completely installed in the building. The testing of the switchgear shall be the responsibility of the switchgear Manufacturer or supplier and not the building fabricator.
• Factory tests shall be done using rated voltages and/or current.
• Testing shall include, but not limited to, the following:
• Manufacturer’s standard tests.
• High potential tests on main buses, circuit breakers, bus duct, control power buses, and control wiring.
• Operational test of each power circuit breaker. Control wiring shall be energized and electrically operated devices shall be operated in both normal and test positions. Circuit breakers shall also be manually operated. All job order breakers shall be available and used for witness testing. The use of shop breakers is not acceptable.
• All automatic transfer systems shall be tested to demonstrate proper operation under normal and abnormal conditions. Tests shall be done with control wiring and all control signals energized.
• All current transformers and secondary circuits including metering and protective relays shall be verified via primary current and voltage. Verification of metering and relay current circuit operation shall be accomplished via primary current and voltage (low voltage, high current source is acceptable as the current source).

• Operation of all protective relays and their control circuits shall be tested by manually or electrically energizing (operating) the relay with its control circuit energized to demonstrate that the relay will trip its associated circuit breaker(s) or other control device(s).
• Check/verify each circuit breaker’s anti–pump and trip free features.
• Remote control systems shall be tested to demonstrate proper operation under simulated conditions.
• Operation of key and electrical interlock systems shall be tested.
• High potential test of vacuum bottles to verify vacuum integrity.
• Mechanical operation tests per ANSI C37.09 Para. 5.11.
• Circuit Breaker Contact Timing Tests–Including copies of oscillographs and or time travel recordings
• Electrical resistance of current path test.
• All current transformers used in different relay circuits and complex metering circuits (e.g., power factor, watt–hour meters) shall have their ratios and polarities verified per ANSI

57.13.1. The ratio shall be verified per the voltage or current method. The polarity shall be determined by the AC voltage test method. The DC voltage test method shall not be used to verify CT polarity.

• CPT’s shall be energized and operation of transfer schemes, when supplied, shall be verified under actual loss of source conditions.
• Operation of space heaters and thermostats shall be tested with the heaters energized.
• Circuit breaker interchangeability shall be demonstrated.
• Witness Testing

When witness testing is specified, the Owner shall witness the complete testing of all items outlined in Section 6.1 of this Practice.

DRAWINGS AND DATA REQUIREMENTS

All drawings provided for this equipment shall show equipment as specified and ordered. Typical drawings are not acceptable unless they are revised to show only the equipment being furnished. Drawings shall be supplied in the quantities and format shown on the Data Sheets.

• Information to be Supplied with Quotation
• Specific listing of any exceptions to those requirements specified.
• Equipment or features included but not necessarily specified.
• Sketches showing:
• Equipment layout/orientation with dimensions
• Proposed one line diagram including CT’s, PT’s, and CPT’s.
• For inquiries with bus duct, include unit costs for add/delete per linear foot and for 90º ells. See paragraph 5.10 for additional information required.
• Number of Days of Field Service allowed (when specified) and Cost Per Day.
• The proposal shall include a complete list of unit prices including the cost to add or delete any circuit breaker, and cubicle vertical section.
• Complete lists and descriptive data of all equipment and accessories proposed shall be included and any components not manufactured by the Seller submitting the proposal shall be so noted as well as the Manufacturer and type proposed.

• Priced lists of normal recommended spare parts for the specified equipment shall be included in the quotation.
• Quote must be for equipment as specified, including any requested alternatives. Manufacturer recommended alternatives shall be provided with associated adds/deducts.
• Itemized list of unassembled equipment (see paragraph 5.1.4.5).
• Cost for witness testing, if specified.
• Information to be Submitted for Owner Approval after Receipt of Order
• Complete Structural Drawings showing:
• Arrangement and front panel layouts
• Dimensional plan and elevation, front view, and other elevation views if pertinent
• Conduit entrance locations and dimensions for both top and bottom entrance
• Bus bar locations and configurations
• Incoming and outgoing power cable terminator positions
• Purchaser’s wiring terminal block locations, and all other terminal block locations
• Identify all items that will require field assembly.
• Anchor bolt locations
• Grounding connections
• Weight of equipment
• Three Line Diagrams: Three line diagrams shall show all:
• Instrument and potential transformers
• Relays
• Meters and meter switches
• Other pertinent devices
• ANSI device function numbers shall be used throughout (ANSI C37.2).
• ANSI C37.11 shall be used for control diagrams
• Elementary Diagrams
• Elementary (schematic) diagrams shall be furnished for each electrically–operated breaker and drawn to ANSI Standards.
• Each elementary diagram shall show all control devices and device contacts, each of which shall be labeled with its proper ANSI device function number.
• Detailed Connection (Wiring) Diagrams showing:
• All wiring within each unit
• All interconnecting wiring between units
• Identification of all terminal blocks
• Clear identification, by some distinguishing method, of all wiring which is to be installed by Owner. This shall include spare auxiliary contacts and relay contacts which shall be wired to terminal blocks for future use.
• Tabular wiring diagrams are not acceptable. Wiring diagrams as well as wire marks, devices and terminal blocks shall use a destination address identification system.
• Detailed listing of all nameplates.
• Certified Information to be Supplied
• All information requested in paragraph 7.2.

• Installation and Operating Instructions: Installation and operating instructions shall cover all the equipment furnished including all protective relays, curves of each relay and power fuse, auxiliary relays, etc.
• Material List: A material list shall be furnished listing the quantity, rating, type, and manufacturer’s catalog number of all equipment in each unit.
• Test Reports for testing outlined in Section 6.1
• Spare Parts Listing

SPARE PARTS

A complete spare parts recommendation based on the total purchase order is required within 60 days after the Manufacturer receives the purchase order. Spare parts recommendations shall include:

• A complete spare parts list, including parts location diagrams or drawings.
• Lists of priced spare parts as recommended by the Manufacturer to be on hand during plant start–up and the first year’s operation.

SHIPPING

• ‘Preparation for Shipment’ shall be in accordance with manufacturer’s standard, unless otherwise noted on the Data Sheet. The Manufacturer shall be solely responsible for the adequacy of the ‘Preparation for Shipment’ provisions employed in respect of materials and application, to provide materials to their destination in ex–works condition when handled by commercial carrier systems.
• When shipped separately, power circuit breakers shall be individually crated and tagged with their rating and model number.
• Relays shall be shipped installed in the stationary structures and shall be securely blocked and braced to prevent damage during shipment.
• Each “shipping section” of stationary structures shall be provided with a permanently–attached, readily visible, identification tag.
• Space heaters, when provided, shall be wired to a terminal block which is accessible for connection to the Owner’s temporary power supply without having to uncrate the switchgear. The terminal block shall be clearly marked as to function, voltage and load requirements.

10.0 TABLES

TABLE 1 DOCUMENTATION REQUIREMENTS

FOR CERTIFIED INFORMATION REQUIRED IN ELECTRONIC FORMAT per EP 13–5–2

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