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- Page 1 Powered by Safety ® Instruction Bulletin - 01.4IB.67000 Power/Vac® Metal-Clad Switchgear 5kV & 15kV 20kA, 25kA, 31.5kA, 40kA, 50kA, & 63kA 1200A, 2000A, 3000A, 3500A, & 4000A FC...
- Page 2 Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Contact Information Powell Electrical Systems, Inc. powellind.com info@powellind.com Service Division 7232 Airport Blvd. Houston, Texas 77061 Tel: 1.800.480.7273 Powered by Safety ®...
- Page 3 01.4IB.67000 Signal Words Qualified Person As stated in ANSI Z535.4-2007, the signal word is For the purposes of this manual, a qualified a word that calls attention to the safety sign and person, as stated in NFPA 70E®, is one who has designates a degree or level of hazard seriousness.
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Page 4: Table Of Contents
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Contents Ch 1 General Information ....................1 A. S ................................2 cope B. p ................................2 urpoSe c. I ....................2 nStructIon ulletInS vAIlABle lectronIcAlly Ch 2 Safety ........................3 A. S ............................3 ondItIon B. S ...............................3 Afety uIdelIneS c. - Page 5 01.4IB.67000 Contents Ch 4 Installation ......................15 A. G ................................. 15 enerAl B. r ................................ 15 eceIvInG c. h ............................... 15 AndlInG d. S ................................. 16 torAGe e. p ......................17 oSItIonInG the etAl WItchGeAr 1) Drawings and Diagrams ..............................17 f. p ........................
- Page 6 Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Contents Ch 5 Operation .......................50 A. G ................................. 50 enerAl B. I ..................50 nSertInG the emovABle lement nto the ompArtment c. B ......................52 reAker AckInG WIth ront loSed d. r ............................ 53...
- Page 7 Figure 4 Primary Disconnecting Device - 1200A ............12 Figure 5 Primary Disconnecting Device - 3000A ............12 Figure 6 Installation Details for Indoor Power/Vac® Metal-Clad Switchgear ...18 Figure 7 Installation Details for Indoor Power/Vac® Metal-Clad Switchgear (cont.) ..................19 Figure 8 Installation Details for Outdoor Power/Vac® Metal-Clad Switchgear ..20 Figure 9 Installation Details for Outdoor Power/Vac®...
- Page 8 Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figures Figure 34 Dead End Bus Joint Insulation ..............42 Figure 35 Installation of Primary Cables ..............43 Figure 36 Cable Termination Joint ................45 Figure 37 Rear View of Unit Showing Ground Fault Current Transformer ....46 Figure 38 Bar-Type Current Transformer Joint Insulation ..........46...
- Page 9 Table A Standard Dimensions ...................8 Table B Ratings of Medium Voltage Power/Vac Metal-Clad Switchgear ......9 Table C Bolt Torque Values for Power/Vac® Medium Voltage Metal-Clad Switchgear ..39 Table D Bus Wrapping Components ................40 Table E Insulation of Bus Bar ...................40 Table F Insulation of Single Bus Bar Connection Joint ...........41...
- Page 10 Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 This page is intentionally left blank. Powered by Safety ®...
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Page 11: Ch 1 General Information
The information in this instruction bulletin is not intended to explain all details or variations of the Powell equipment, nor to provide for every possible contingency or hazard to be met in connection with installation, testing, operation, and maintenance of the equipment. For additional information and instructions for particular problems, which are not presented sufficiently for the user’s purposes, contact Powell at 1.800.480.7273. -
Page 12: S Cope
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 A. S The illustrations contained in this document cope may not represent the exact construction The information in this instruction bulletin details of each particular type of metal-clad describes the following Power/Vac® metal-clad switchgear. -
Page 13: Ch 2 Safety
The rules are intended to cover only some of the Informational Note: See ANSI/ISA-61010-1 important aspects of personnel safety related to (82.02.01)/UL 61010-1, Safety Requirements Power/Vac® metal-clad switchgear. for Electrical Equipment for Measurement, Control, and Laboratory Use - Part 1: General Requirements, for rating and design... -
Page 14: G Eneral
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 c. G serviced only by skilled and knowledgeable enerAl personnel capable of releasing each spring 1. Only supervised and qualified personnel load in a controlled manner. Detailed trained in the usage, installation, operation,... -
Page 15: Ch 3 Equipment Description
NOTICE metal-clad switchgear, and applicable drawings because each metal-clad switchgear Powell is committed to continuous product line-up is custom designed for a particular improvement. It is possible that improvements use and application. Separate instructions occurred between revisions to this document... -
Page 16: Figure 1 Typical Indoor Power/Vac® Metal-Clad Switchgear Lineup
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 1 Typical Indoor Power/Vac® Metal-Clad Switchgear Lineup Powered by Safety ® Equipment Description... -
Page 17: Figure 2 Typical Outdoor Power/Vac® Metal-Clad Switchgear Lineup
01.4IB.67000 Figure 2 Typical Outdoor Power/Vac® Metal-Clad Switchgear Lineup Powered by Safety ® Equipment Description... -
Page 18: Figure 3 Interior Metal-Clad Switchgear (Lower Compartment)
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Table A Standard Dimensions Continuous Current Short-Circuit Rating Height Depth Configuration Rating (Amperes) (kA) (inches) (inches) One-High 1200, 2000, 3000 20, 25, 31.5, 40, 50 & 63 Two-High 1200, 2000 20, 25, 31.5 40,, 50 & 63... -
Page 19: S Econdary C Ompartment
The Power/Vac® circuit breaker is a vacuum type circuit breaker. It is designed to meet all the requirements for use in metal-clad switchgear and as such it has all the necessary interlocks and grounding to interface with the switchgear. It is a removable device, designed with wheels that make insertion and removal from the compartment a simple operation. -
Page 20: B Reaker L Ift T Ruck
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 e. B G. l (BIl) reAker ruck IGhtInG mpulSe IthStAnd For ease of breaker handling during installation The basic impulse level is 60kV for the 4.16kV and removal, a breaker lift truck is furnished class switchgear and 95kV for the 8.25kV and... -
Page 21: R Emote R Acking
Wipe pressure is Power/Vac® circuit breaker instruction bulletin. obtained by tension springs between the rows of fingers which pull them together. When the... -
Page 22: B Us Ompartment
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 4 Primary Disconnecting Device - k. B ompArtment 1200A The main buses are enclosed in a metal compartment with removable front covers to provide accessibility. The bus is supported and insulated by molded glass-reinforced polyester barriers which are flame retardant and track resistant. -
Page 23: Oltage Ransformers
01.4IB.67000 In double breaker vertical sections, a steel duct compartment behind their associated fuse serves as a pull-box and barrier to separate the carriage and their secondary breaker is located two outgoing cable circuits. behind a hinged cover on the upper cable compartment. -
Page 24: G Round And Est Evice
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Q. G devices. Copper rods are bolted in the location round And evIce normally occupied by vacuum interrupters. This device is designed to make either the The stationary structure is the same as for a upper or lower primary conductors in the circuit breaker. -
Page 25: Ch 4 Installation
Powell representative. Contact the Powell Service Division for installation, Refer to the instruction bulletin furnished with maintenance, and renewal parts assistance. the circuit breaker for receiving, handling, and To contact the Powell Service Division, call storage instructions on the circuit breaker. -
Page 26: S Torage
The equipment must All indoor switchgear equipment not furnished be protected from airborne external in a Powell Power Control Room (PCR®) is contaminates if stored outdoors. Outdoor furnished with channel bases installed at the storage will also require additional care factory. -
Page 27: M Etal -C Lad S Witchgear
WItchGeAr 1) Drawings and Diagrams Prior to installation, consult and study all drawings and Bill of Materials furnished by Powell. The drawings include arrangement drawings and wiring and schematic diagrams. The recommended aisle space for the front and at the rear of the metal-clad switchgear is shown on the floor plan drawing furnished for the particular order. -
Page 28: Installation Details For Indoor Power/Vac® Metal-Clad Switchgear
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 6 Installation Details for Indoor Power/Vac® Metal-Clad Switchgear LIFT-SLING SPREADER SPREADER FRONT VIEW SIDE VIEW LIFT JACK CABLE LOOP LIFTING EYE LIFTING ANGLE OPTIONAL METHOD AB CABLE LOOP LIFT JACK CROSS JACKING TIMBER... -
Page 29: Figure 7 Installation Details For Indoor Power/Vac® Metal-Clad
01.4IB.67000 Figure 7 Installation Details for Indoor Power/Vac® Metal-Clad Switchgear (cont.) 2.12 0.00 82.00 BOLT 66" REQUIRED AS 94.00 MINIMUM AISLE SPACE FOR 35" RECOMMENDED BREAKER REMOVAL FOR REAR HINGED FINISH FLOOR COVERS LINE FRONT REAR 4" CHANNEL 2- 0.75 DIA HOLE FOR (SEE NOTE#2) 0.50 DIA ANCHOR BOLT... -
Page 30: Figure 8 Installation Details For Outdoor Power/Vac® Metal-Clad Switchgear
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 8 Installation Details for Outdoor Power/Vac® Metal-Clad Switchgear LIFT-SLING SPREADER SPREADER WOOD - BOTH ENDS LIFT ANGLE FRONT VIEW SIDE VIEW LIFT JACK CABLE LOOP LIFTING EYE LIFTING ANGLE -AB- OPTIONAL METHOD... -
Page 31: Figure 9 Installation Details For Outdoor Power/Vac® Metal-Clad Switchgear (Cont.)
01.4IB.67000 Figure 9 Installation Details for Outdoor Power/Vac® Metal-Clad Switchgear (cont.) 0.00 POWER-VAC EQUIP DEVICE PANEL ANCHOR 66" REQUIRED BOLT AS MINIMUM AISLE SPACE BOLT 94.00 FOR BREAKER POWER-VAC EQUIP FINISH REMOVAL. FLOOR FRAME FLOOR REAR PAD 1 3.00 2.62 2.62... -
Page 32: Figure 10 Installation Details For Outdoor Power/Vac® Metal-Clad Switchgear With Protected Aisle
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 10 Installation Details for Outdoor Power/Vac® Metal-Clad Switchgear with Protected Aisle SPREADER LIFT SLING SPREADER LIFT ANGLE WITH BUBBLE LIFTING STRUCTURE ADD ON SUPPORT SHIPPING STRUCTURE AISLE ASM. TYP. AISLE ASM. COMPLEX OF TWO OR MORE AISLE ASM'S WITH... -
Page 33: P Reparation Of F Loor A Nchoring
01.4IB.67000 f. p desired, the conduits may be installed repArAtIon of loor nchorInG before the switchgear. Consideration 1) Indoor Metal-Clad Switchgear should be given to conduits which might be required for future connections. The station floor must be strong enough to Conduits must extend no more than one remain rigid and not sag under the weight inch above the furnished floor prior to the... -
Page 34: Figure 11 Typical Assembly Details
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 11 Typical Assembly Details 1/4-20 BOLT X 1LG AISLE SIDE PANEL AISLE FLOOR WASHER LOCKWASHER FLOOR CAP 3/8-16 BOLT X 1-1/4 LG NUT RETAINER FLOOR 3/8-16 BOLT X 1LG WASHER TIE PLATE... -
Page 35: Figure 12 Typical Assembly Details (Cont.)
01.4IB.67000 Figure 12 Typical Assembly Details (cont.) METAL CLAD 3/8-16 BOLT X 1 LG AISLE SIDE PANEL EQUIPMENT METAL CLAD WASHER AISLE ROOF EQUIPMENT 1/4-20 BOLT LOCKWASHER WASHER LOCKWASHER 3/8-16 BOLT X 1 LG WASHER AISLE LOCKWASHER END WALL 1/4-20 TAPTITE 1/4-20 METAL CLAD SHIPPING COVER... -
Page 36: Outdoor Metal-Clad Switchgear
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 2) Outdoor Metal-Clad Switchgear 3) Outdoor Switchgear with Protected Aisle Switchgear support should be concrete a. Remove aisle front wall from the front or reinforced concrete with depth, fill, of the metal-clad switchgear, discard drainage, etc., according to recommended... -
Page 37: Outdoor Switchgear With Common Aisle
01.4IB.67000 h. Remove roof angle (reuse 1/4 - 20 c. Move second switchgear line-up into hardware) and set aisle roofs in place, position and secure to aisle floor per taking care to align the lap joint Figure 11, E & F. -
Page 38: Figure 13 Assembly Of Outdoor Switchgear With Protected Aisle
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 k. Assemble grommets in the aisle roof sections. Assemble and wire the light switches, receptacles, lamp sockets, etc. in accordance with the wiring diagrams furnished for the switchgear. Figure 13 Assembly of Outdoor Switchgear with Protected Aisle... -
Page 39: Figure 14 Assembly Of Outdoor Switchgear With Protected Aisle - (Cont.)
01.4IB.67000 Figure 14 Assembly of Outdoor Switchgear with Protected Aisle - (cont.) AISLE END EXTENSION METAL CLAD EQUIPMENT AISLE END EXTENSION END WALL REUSE 1/4-20 HARDWARE AISLE END EXTENSION SHIPPING COVERS SHIPPING SUPPORT REUSE PLUG BUTTONS AISLE WALL SHIPPING POSITION SHIPPING COVERS Powered by Safety ®... -
Page 40: B Reaker Emovable Lement
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 G. B The information below indicates that special reAker emovABle lement procedures are required to add new metal-clad units to outdoor equipment without CAUTION a protected aisle and with a protected aisle. For indoor equipment, it is usually necessary... -
Page 41: Adding Units To Outdoor Equipment With A Protected/Common Aisle
1) Introduction a. Remove the following items from the existing protected/common aisle and Power/Vac® switchgear is shipped in splits metal-clad section and move to the end of one, two, three, or four stacks. When of the new addition (except as noted):... -
Page 42: Figure 15 Front Upper Compartment
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 15 Front Upper Compartment Figure 17 Taptite Location in Front Upper Compartment a. Chain b. Vertical Mid Barrier c. Secondary Disconnect Block a. Taptites (3) d. Horizontal Barrier e. Pan Remove the vertical mid barrier... -
Page 43: Figure 19 View Of Typical Front Lower Pt/Cpt Rollout Compartment
01.4IB.67000 Figure 19 View of Typical Front Lower PT/CPT e. Unbolt and remove the glastic shipping Rollout Compartment supports taking care to ensure that splice plates and spacers provided in the bus joint do not fall off. Loosely refasten bus hardware to hold the splice plates and spacers in place. -
Page 44: Figure 22 Typical Bus Compartment With Polyester Glass Inter-Unit Bus Support
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 22 Typical Bus Compartment with Figure 23 View Showing Stacks Bolted Together Polyester Glass Inter-Unit Bus Support Make bus connections (for polyester h. Align the switchgear stacks: glass bus supports go to Step iii). -
Page 45: Tie Bus Connections Across The Shipping Split
01.4IB.67000 Figure 24 Single Bus Bar Arrangement 3) Tie Bus Connections Across the Shipping Split Steps d thru h are the same for making the tie bus connections. The tie bus compartment can be accessed from the rear of the switchgear by removing the rear bus barrier of the tie bus compartment. -
Page 46: I Nstructions For Olting
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 k. I nStructIonS for oltInG tAckS oGether croSS hIppInG plIt ectIonS 1) Introduction Power/Vac® switchgear is shipped in splits of one, two, three, or four stacks. This instruction provides details on bolting the stacks together across the shipping splits. -
Page 47: Figure 27 Sectional View Of Inter-Unit Bolting
01.4IB.67000 Figure 27 Sectional View of Inter-Unit Bolting PERIMETER BOLTING PERIMETER BOLTING PARTIAL SECTION Y-Y CENTER-POST BOLTING 4 PLACES PERIMETER BOLTING TYP 18 PLACES FRONT REAR OF (BREAKER REMOVAL END) SECTION(S) CENTER-POST BOLTING TYP 4 PLACES Figure 28 Typical Center Post Bolting a. -
Page 48: C Onnections
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 3. Sixteen sets of 0.38 x 1” hardware is 2. Join the clean contact surfaces by using provided for perimeter bolting. The the hardware provided. following guidelines shall be followed: The correct length of bolt must be a. -
Page 49: Sliding Connections
SSemBly cloth or steel wool for this purpose. Avoid handling of the contact surfaces Table C Bolt Torque Values for Power/Vac® after cleaning. Apply a thin coat of Medium Voltage Metal-Clad Switchgear Mobil grease (Red) to the front two... -
Page 50: Wrapping Of Joints
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 30 Insulation of Bus Bar 1) Wrapping of Joints Wrapping of joints with insulating tape is .048 (1.2) Approximate Dimension (Tape Tension) 1/2W an acceptable alternative to booting the bus conductor joints. For some complex or “W”... -
Page 51: Figure 31 Single Bus Bar Connection Joint
01.4IB.67000 Figure 31 Single Bus Bar Connection Joint Figure 32 Double Bus Bar Connection Joint Epoxy Insulation “C” 4” (101.6) Wide Thermoplastic Sleeving PAD HV Tape “C” .50 (12.7) or Tape Insulation .50 (12.7) “B” - 1/2 LAP “A” “B” “A”... -
Page 52: Figure 33 Tee Connection Joint
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 33 Tee Connection Joint Figure 34 Dead End Bus Joint Insulation Epoxy Insulation Thermoplastic Sleeving Pre-Insulation Epoxy Insulation or Tape Insulation Thermoplastic Sleeving or Tape Insulation “B” .50 (12.7) .50 (12.7) Apply RB Putty Sparingly “A”... -
Page 53: Cleaning Bus Insulation
1. Remove rear bolted covers. 2. Remove batten (Figure 35, The primary cable connections in 3. Remove cable trough cover and pull-box Power/Vac® switchgear are reached by cover. accessing the rear cable compartment. (Figure 35, 4. Remove cable trough 5. If primary cables enter switchgear from... -
Page 54: I Nsulating P Rimary C Able T Erminations
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 o. I Before any primary cable connections are nSulAtInG rImAry ABle ermInAtIonS made, the cables should be identified to The factory does not furnish insulating indicate their phase relationship with the materials for completing the termination switchgear connections. -
Page 55: Figure 36 Cable Termination Joint
01.4IB.67000 Figure 36 Cable Termination Joint p. G round Ault urrent rAnSformerS hrouGh Epoxy Insulation Thermoplastic Sleeving or Tape Insulation Through-type current transformers are furnished where specified for sensitive .50 (12.7) protection against ground faults. These transformers are normally installed in a “C”... -
Page 56: G Round F Ault C Urrent T
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 37 Rear View of Unit Showing Ground Figure 38 Bar-Type Current Transformer Joint Fault Current Transformer Insulation Pre-Insulation Epoxy insulation Thermoplastic Sleeving or Tape Insulation “A” “B” “D” 1/2 LAP “C” C.T. -
Page 57: C Ontrol C Ables
01.4IB.67000 Q. c r. G ontrol ABleS round Space is provided for control cables to enter Where the equipment is shipped in more the switchgear from either the top or the than one section, the ground bus must be bottom of the units. See drawings furnished connected by using the splice plates furnished with the switchgear for detailed dimensions with the equipment. -
Page 58: R Oof E Ntrance B Ushings
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 t. r ntrAnce uShInGS Table L Pothead, Bushing, or Terminator Approx. No. of Rolls per Joint When assembling the connection bar end of Insulation Inner Outer “C” of HV Tape ∆ Level (kV) Filler “A”... -
Page 59: Powered By Safety
27kV (75% of 36kV). DC hipot testing is not recommended. If DC hipot testing must be performed, consult with Powell prior to testing. 2. Surge arrestors, if present, must be disconnected before hipot testing. 3. Voltage Transformers and Control Power Transformers must be moved to the “DISCONNECTED”... -
Page 60: Ch 5 Operation
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Ch 5 Operation B. I nSertInG the emovABle lement nto the ompArtment A. G enerAl With all primary and control power circuits deenergized and before installing the WARNING breaker, clean the mating surfaces of the... -
Page 61: Powered By Safety
01.4IB.67000 (Figure 40, d) away from the mast as far as it will Lift the breaker for insertion into the go toward the end of the arms. This permits equipment as follows. After the breaker has the track roller blocking interlocks to be in their been loaded onto the lift truck and before raised position. -
Page 62: B Reaker R Acking With F Ront D Oor C Losed
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 40 Lift Truck studs may be checked with respect to the stationary conductor in the unit. CAUTION The primary circuits must be deenergized prior to performing this check. Use the racking handle to turn the jackscrew... -
Page 63: R Emote R Acking D Evice
If the interlock does not function as indicated To test the function of the positive interlock in either of the above cases DO NOT MAKE install a circuit breaker following the ANY ADJUSTMENT. Contact the nearest Powell instructions given in Ch 5 Operation, Service representative for instructions. -
Page 64: S Pring Ischarge Nterlock
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 the metal-clad switchgear, one member is CAUTION stationary and the other is a spring loaded slide attached to the racking mechanism. A third If the interlock does not function as indicated member, a notched sliding link, provides the... -
Page 65: I Nterference I Nterlock
Continue to rack the breaker to the connected on wither the metal-clad switchgear or position. Just before reaching the connected the Power/Vac circuit breaker. In case of a position, the spring charging motor will problem consult the nearest Powell service reenergize to charge the closing spring. -
Page 66: Figure 41 Left Side Racking Rail
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Figure 41 Left Side Racking Rail a. Position Indicator b. Racking Shaft c. Racking Nut d. Bearing e. Rail f. Slot g. Notched Sliding Link h. Detent Bolt Keylock k. Interference Interlock Figure 42 Right Side Racking Rail a. -
Page 67: K Ey Ocks
01.4IB.67000 J. k k. p ockS AdlockS On the left side breaker racking mechanism Two positions for a possible 3 padlocks each track is a provision for a key lock are provided on the racking mechanism. The (Figure 41, j). The purpose of this lock is to front position keeps the breaker from closing in keep the breaker from closing in the “Test”... -
Page 68: Powered By Safety
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 By maintaining a slight temperature differential, the heaters help facilitate drying and prevent condensation and the resulting corrosion and insulation deterioration which might occur. Four 75-watt heaters are provided in each vertical section. One heater is located in each breaker or auxiliary compartment on the bottom at the rear. -
Page 69: Ch 6 Maintenance
A. G the equipment. However, this insulation, in enerAl most instances requires a certain amount of Contact Powell Service Division for air gap between phases and to ground, which assistance in performing maintenance or completes the insulation. setting up a maintenance program. Email info@powellservice.com... -
Page 70: Racking Mechanisms
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Only use denatured alcohol or isopropyl 5) Disconnecting Contacts alcohol to clean the insulation. Wear Inspect all primary and secondary protective gloves and goggles and clean disconnecting contacts, such as those on the main bus bar in a well ventilated area. -
Page 71: Battery And Charging Equipment
01.4IB.67000 10) Battery and Charging Equipment 13) Testing The control battery is such an important The condition of each switchgear unit at accessary to the switchgear operation the time of inspection should be listed in that it must be given special periodic a permanent record to become a guide for attention if it is to have a long life of reliable anticipating the need for replacements or... -
Page 72: Abnormal Conditions
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 c. The resistance of bus connections may 15) Doors be checked by passing a measured Verify that all doors open without DC current of 200A or more, through interference. the joint and measuring the voltage a. -
Page 73: Ch 7 Recommended Renewal Parts And Replacement Procedures
A. o rderInG nStructIonS any worn, broken or damaged part. A sufficient amount of stocked parts minimizes service 1. To order replacement parts from Powell, interruptions caused by breakdowns and saves visit the website at powellind.com or call time and expense. When continuous operation 1.800.480.7273. -
Page 74: Table M Accessories
Power/Vac® Metal-Clad Switchgear 5kV & 15kV 01.4IB.67000 Table M Accessories Description Part Number 0177C3702G023 (standard) Left Hand Racking Mechanism other options available Right Hand Racking Mechanism 0177C3702G024 Spreader Bar Assembly 0177C3225G001 0177C3408G001 1200A Bus Polyester Inter-Unit Bus Support 0177C3408G002 2000A Bus... -
Page 75: Powered By Safety
1200A, 2000A, 3000A, 3500A, & 4000A FC October 2018 Powered by Safety ® Powell Electrical Systems, Inc. Tel: 1.800.480.7273 Service Division - Houston powellind.com 7232 Airport Blvd • Houston, TX • 77061 info@powellind.com ©2006 Powell Industries, Inc. • All rights reserved.
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