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SecoGear – Installation, Operation and Maintenance Manual 45 of 56

Before Energizing

Before energizing the switchgear, perform a thorough final
check using the following checklist:
1. Circuit breakers and other operating mechanisms exercised.
2. Electrical insulation resistance tested phase-to- phase

and phase-to-ground.

3. Relays, meters and instruments properly connected.
4. Electrically operated circuit breakers and operating

mechanisms exercised.

5. Ground fault protection system tested.
6. Adjustable trips properly set.
7. Field wiring secured and free of live bus.
8. Grounding connections made.
9. All debris, scrap wire, etc., removed.
10. All covers installed, doors closed and latched.

8. Energizing The Switchgear

Energizing switchgear for the first time is potentially
dangerous. Therefore, qualified electrical personnel
should be present when the equipment is energized.
If problems caused by damage or poor installation
practices have not been detected in the above
checklist, serious damage can result when power is
turned on.

CAUTION

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Содержание SecoGear

Страница 1: ...5kV 15kV IEEE Metal Clad Switchgear SecoGear GE DEH 50009 Installation Operation and Maintenance Manual...

Страница 2: ...hgear 15 SecoVac Vacuum Circuit Breakers 15 3 SecoGear Construction 16 Circuit Breaker Compartment 16 Closed door Drawout 16 Fixed Primary Disconnect Contacts 17 Automatic Shutters 18 Interlocks 18 Cu...

Страница 3: ...ss Panels 35 Final Inspection 35 5 Circuit Breaker Installation Removal 36 Inspection and Preparation 36 Racking 36 Installing SecoVac Vacuum Circuit Breaker into Switchgear Compartment 37 A Place Cir...

Страница 4: ...47 Instruments Components and Relays 47 Switchgear Interior 47 Main Bus Compartment 48 Replacing Current Transformers CTs 49 Wire the CTs 49 Overall Switchgear 50 Padlocks and Keylocks 50 Circuit Bre...

Страница 5: ...en Safety Interlock Plungers 19 Figure 3 9 Padlock for Door and Breaker Rack in out 19 Figure 3 10 Current Transformers 19 Figure 3 11 Voltage Transformers 20 Figure 3 12 Fuses only Tray 20 Figure 3 1...

Страница 6: ...oint 33 Figure 4 24 Typical Ground Bus 34 Figure 4 25 Ground Bus Plan View 34 Figure 4 26 Ground Bus Rear View 34 Figure 4 27 Upper Cable Plates 35 Figure 4 28 Lower Cable Plates 35 Figure 5 1 Two Hig...

Страница 7: ...Switchgear Compartment Socket 41 Figure 5 26 Racking Handle 42 Figure 5 27 Racking Handle Insertion on Door 42 Figure 5 28 Access Hole Open 42 Figure 5 29 Disconnected Test Position Green 42 Figure 5...

Страница 8: ...le 4 2 Tape Dead end Bus Joint 28 Table 4 3 Tape Bus Connection Joint 29 Table 4 4 Tape Current Transformer Joint 29 Table 4 5 Tape Tee Connection Joint 30 Table 4 6 Tape Double Bus Bar Joint 30 Table...

Страница 9: ...SecoGear Installation Operation and Maintenance Manual 9 of 56...

Страница 10: ...r respective owners Warranty This document is based on information available at the time of its publication While efforts have been made to ensure accuracy the information contained herein does not co...

Страница 11: ...re applicable to all major electrical equipment such as switchgear or switchboards GE neither condones nor assumes any responsibility for practices that deviate from the following 1 ALL CONDUCTORS MUS...

Страница 12: ...ng power equipment in general as well as the particular model of equipment with which they are working Instruction books actual devices and appropriate safety and maintenance practices such as OSHA pu...

Страница 13: ...ide compartments of each section to see if any have been dislodged or damaged Filing a Claim If any damage is evident or indication of rough handling is visible file a claim for damage at once with th...

Страница 14: ...2 3 Corner Warning Label When using a forklift to raise the lineup proceed as follows 1 Expand forklift tines to their maximum widest extension 2 Carefully insert tines of forklift below one side of t...

Страница 15: ...overing 2 Check thoroughly for damage 3 Store in a clean dry rodent free location between 30 C and 40 C Storage Remove all cartons containers and miscellaneous packaging and packing material from insi...

Страница 16: ...ng the fixed primary contacts Closed door Drawout Closed door drawout is a standard construction feature on all circuit breaker compartments Figure 3 2 The circuit breaker compartment doors remain clo...

Страница 17: ...OPEN when it is moved into or out of the CONNECTED position The primary finger clusters on the circuit breaker will engage these contacts when the circuit breaker is racked into the CONNECTED positio...

Страница 18: ...g energy prior to withdrawal of the circuit breaker from the compartment Rejection interlocks to prevent insertion of improperly rated circuit breaker The secondary disconnect plug Figure 3 7 must be...

Страница 19: ...shings in the rear of the circuit breaker compartment and are isolated from the circuit breaker by the shutters They are front accessible by removing the personnel barrier and manually opening the shu...

Страница 20: ...ch contacts the fuses when the voltage transformers are disconnected effectively discharging the transformers reference IS Field Engineer s Manual EM9370 appendix section 25 26 for proper discharge of...

Страница 21: ...is open or closed and whether it is in the connected position Circuit Breaker The type SVGTXX Manual Ground and Test Device is an auxiliary removable device for use in SecoGear metal clad switchgear e...

Страница 22: ...ac Vacuum Circuit Breaker Installation Manual Primary Disconnects Primary disconnects utilize silver plated copperfingers positioned in a circular configuration and are supported by a non magnetic spi...

Страница 23: ...is mechanism is contained in the undercarriage of the circuit breaker The racking mechanism is manually operated utilizing the racking handle furnished with the switchgear The circuit breaker cannot b...

Страница 24: ...l floor is allowable The foundation must be flat and level in all planes perpendicular on both axes within 0 25 in 6 35 mm over a 10 ft 3048 mm span The embedded floor channel requirements are as foll...

Страница 25: ...embedded conduits installed and capped For each lineup the assembly procedure involves 1 Bolting side by side sections together 2 Inserting main bus and bus ties and bolting them between sections 3 I...

Страница 26: ...emovable weld nut plates located inside the front and rear doors see Figure 4 6 Only one nut plate is required per joining section so the middle section may have none attached from the factory In the...

Страница 27: ...e market we highly recommend going to the vendors website to review current product offerings and installation methods that will best work for your situation Products may include tapes putties and hea...

Страница 28: ...ithout tension to prevent the tape end from lifting No other taping or paint is required Note Apply 3 layers 1 2 Lap for conductors passing thought C T s Electrical grade rubber based putty 0282A3529...

Страница 29: ...Roll H V Tape Table 4 3 Tape Bus Connection Joint Table 4 4 Tape Current Transformer Joint Electrical grade rubber based putty 0282A3529 P008 in roll form will be used to grade voids and smooth out sh...

Страница 30: ...is 1 8 x 1 1 2 x 5ft LG High voltage insulating tape 0282A3529 p004 roll is 030 x 2 x 30 LG Apply with mastic side down APPROX NO ROLLS PER JOINT OF H V TAPE INSULATION LEVEL INNER FILLER A OUTER WRA...

Страница 31: ...removed Figure 4 18 the main bus can be installed as described below Main bus bars across shipping splits are packaged and shipped separately Each bar is marked with phase and section designation Bus...

Страница 32: ...Main Bus Sizes Table 4 8 Riser Runback Bus Size CURRENT MATERIAL PIECES SIZE 1200 A 2000 A Copper 1 3937 in x 5 9055 in 10 mm x 150 mm 3000 A Copper 2 3937 in x 5 9055 in 10 mm x 150 mm CURRENT MATER...

Страница 33: ...gure 4 21 Main Bus Connection Plan Top View Figure 4 22 Main Bus Connection Through Joint Figure 4 23 Main Bus Connection Start or End Joint Through Joint Figure 4 14 Start or End Joint Figure 4 15 Bo...

Страница 34: ...eners indicated in these documents Recommended Torque Values Figure 4 24 Typical Ground Bus Ground bus splice and hardware are typically shipped assembled at both sides of adjacent shipping packages G...

Страница 35: ...ded in each area for use in cable exiting from above or below Both are fastened with 6 mm hardware that requires a 10 mm socket or wrench Cable Access Panels Make a final inspection to see that no too...

Страница 36: ...engaged The circuit breaker must be open before it can be racked out of this position DISCONNECTED TEST When in the DISCONNECT TEST position the primary contacts are disconnected but the secondary con...

Страница 37: ...the floor lock shown in Figure 5 4 Now roll the VCB onto the rails of the lift truck The wheels on the VCB should follow the rail guides Figure 5 4 Press the Front Pedal to Lock Lift Truck Figure 5 6...

Страница 38: ...the lifting and interlocking mechanisms of the lift truck for smooth operation and inspect the cables in the hand winch system for any signs of damage fatigue or wear before proceeding 2 Open the Seco...

Страница 39: ...witchgear compartment slot Figure 5 14 Operation Handle Figure 5 15 Operation Handle Fully Engaged into Switchgear Compartment b Lock the operation handle into place by pressing down and rotating the...

Страница 40: ...Handle 1 Once the VCB is in the switchgear compartment disengage the lift truck compartment interlock by rotating the interlock pin counterclockwise Figure 5 19 then move the handle to the left and pu...

Страница 41: ...ocking tabs on both sides of the VCB Ensure they engage and lock into position 5 5 9 Release the lift truck compartment interlock 10 Release the floor lock of the lift truck Figure 5 7 and move the li...

Страница 42: ...w CAUTION Figure 5 26 Racking Handle Figure 5 27 Racking Handle Insertion on Door Figure 5 28 Access Hole Open Figure 5 29 Disconnected Test Position Green Figure 5 30 Intermediate Position Yellow Fig...

Страница 43: ...osition is not suitable for inspection and maintenance of the circuit breaker and should therefore be used only for testing circuit breaker operation Refer to Publication DEH 50001 SecoVac Vacuum Circ...

Страница 44: ...pushbutton on the front The spring must be charged before the circuit breaker can be closed A complete charge is accomplished by manually pulling the handle down about 90 until it stops ten times to...

Страница 45: ...operating mechanisms exercised 5 Ground fault protection system tested 6 Adjustable trips properly set 7 Field wiring secured and free of live bus 8 Grounding connections made 9 All debris scrap wire...

Страница 46: ...ace and in company or other safety regulations Circuit Breaker And Instrument Compartments A circuit breaker inspection is recommended at least once a year More frequent inspections are recommended wh...

Страница 47: ...or evidence of overheating and for cracks that indicate excessive thermal aging Refer to Publication DEH 50001 SecoVac Vacuum Circuit Breaker Installation Manual for detailed maintenance instructions...

Страница 48: ...compartments This includes de energizing any connections to outside primary or secondary sources such as transformers tie lines etc WARNING 1 Remove the zero sequence current transformer CT assembly...

Страница 49: ...e assembly Figure 9 2 Repeat for any additional CTs 4 Install spacers behind CTs Figure 9 4 Apply 7 8 spacers to single CT modules apply 7 8 and 2 spacers Figure 9 3 to piggyback CT modules 5 Secure C...

Страница 50: ...re 9 8 This lock prevents racking in a circuit breaker whenever the door is closed The door padlocking provision described below must also be used to make sure the circuit breaker cannot be racked in...

Страница 51: ...e closed door unless the racking access port is locked out as shown in Figure 9 8 Shutter Padlock Provision Shutter padlocking is available if you need to work in the cubicle but want to prevent the s...

Страница 52: ...r operation has been performed Unplug the secondary disconnect from the stationary cubicle connection point Close the circuit breaker door and then install a padlock on the racking port cover to preve...

Страница 53: ...using the touch up paint included with the equipment If major repair is necessary replacement parts may be necessary Application of special paint will be per the manufacturer s Product Data Sheet whic...

Страница 54: ...racking handles on the circuit breaker are not in position Adjust the frame and handles The circuit breaker is closed Open the circuit breaker Shutter is not completely open Visually check shutter dr...

Страница 55: ...SecoGear Installation Operation and Maintenance Manual 55 of 56 Notes...

Страница 56: ...of the General Electric Company The GE brand logo and lumination are trademarks of the General Electric Company 2018 General Electric Company Information provided is subject to change without notice...

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