Westinghouse PS-1002 Instruction Book
  1. Manuals
  2. Brands
  3. Westinghouse Manuals
  4. Transformer
  5. PS-1002
  6. Instruction book
Westinghouse PS-1002 Instruction Book

Westinghouse PS-1002 Instruction Book

Hide thumbs
Table of Contents

Advertisement

Quick Links

INSTRUCTION BOOK PS-1002
FOR POWER SUB STATION
TRANSFORMERS
Westinghouse Electric Corporation
Small Power Transformer Division
South Boston, Virginia
All possible contingencies which may arise during installation, operation, or maintenance, and all details and varia/ions of
this equipment do not purport to be covered by these instructions. If further information is desired by purchaser regarding his particular
installation, operation or maintenance of his equipment, the local Westighouse Electric Corporation representative should be contacted.
24592

Advertisement

Table of Contents
loading

Summary of Contents for Westinghouse PS-1002

  • Page 1 INSTRUCTION BOOK PS-1002 FOR POWER SUB STATION TRANSFORMERS Westinghouse Electric Corporation Small Power Transformer Division 24592 South Boston, Virginia All possible contingencies which may arise during installation, operation, or maintenance, and all details and varia/ions of this equipment do not purport to be covered by these instructions. If further information is desired by purchaser regarding his particular...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Page I. INTRODUCTION ..........2 . RECEIVING ..........3. HANDLING........... 4. STORAGE PRIOR TO ENERGIZING ....... . . 5.

  • Page 3: Introduction

    1.1 These instructions apply to Substation transformers NOTE: INSPECTION TRANSFORMER, PACK· manufactured by the Westinghouse Small Power Trans · AGES AND PARTS IS REQUIRED PRIOR TO UN­ EST AB· former Division at South Boston, Virginia. WADING FROM CARRIER, IN ORDER TO LISH THE CONDITION OF THE EQUIPMENT UPON DELIVERY.
  • Page 4 a) Bleed off any internal pressure, to prevent the hand­ CHECK LIST hole cover from blowing off when the bolts are removed. Internal pressure may be relieved by use of gas sample Answer Indicates valves; or by using a pressure relief valve when supplied. Possible (or by SLOWLY removing the filling plug a thread at a Damage...

  • Page 5: Handling

    c.2. Insulation resistance of each winding to all other Chain No. of Chain Chain Sling Capacity (lbs.)* windings and ground and from all windings to ground Size Chains Capacity Without With should be made with the windings under liquid. Re­ (in.) Req'd.

  • Page 6: Storage Prior To Energizing

    5 .3 Transformer Nameplate age. Refer to Westinghouse Bushing Manual T.D. 33 -3 60 for instructions on how to make these bushing tests and nameplate is supplied on each transformer according to how to analyze the test results.
  • Page 7 5000 TYPE SL 5600 KVA-65°C. RISE TRANSFORMER SZVI357-01 INSULDUR INSULATION 00 2 GALLONS OIL p s- I IUIIUCIIOI BOIK KY., LOW VOLTAGE 5000 13800 TD 4 Y VOLTS "'1���m: 1 �� � ·s 59 0 5100 � HOUSE ELECTRIC PHASE A PHASE B PHASE C 41 60...

  • Page 8: Liquid Level Gauge

    provides basic information for the correct connection and 14. PHASE RELATION: The phase rotation and phase loading of the transformer. The following is a brief de­ angle shift between the high voltage and low voltage is scription of the information supplied on a typical name­ represented by a phasor diagram.

  • Page 9: Liquid Temperature Gauge

    periodic inspection required by Section 8 of this instruc­ tion book. If shipped separately or if the body is replaced, check operation of the float over its entire range to see that it is free and that the needle follows movement of the float.

  • Page 10: Pressure Relief Device

    rupture of the tank walls and cover. The design pressure transformer cover. The device consists of a self-resetting, spri n g-loaded diaphragm and a mechanical operation in­ on the transformer nameplate is the greatest pressure (or vacuum) that will not permanently distort the tank walls. dicator (semaphore).

  • Page 11: Winding Temperature Gauge

    switch ratings. The alarm switch must be manually r�set after each operation. Necessary maintenance is the resetting of the sema­ phore and alarm switch (if supplied) after each operation. If the gasket between the transformer boss and the relief device must be replaced, follow the instructions in Sec­ tion 8.7.

  • Page 12: Sudden Pressure Relay

    A seal-in relay reset switch, and the associated circuitry are mounted in a separate control cabinet. The seal-in re­ lay is energized when the sudden pressure micro-switch operates and remains so until manually reset with the re­ set switch . Seal-in relay loads should be limited to the values given in the table listing given on the wiring dia­...

  • Page 13: Transformer Cooling Fans

    Make the Field Tests of the Sudden Pressure Relay and means of starting the fans independently of the position its Panel to determine whether the Relay is in proper op­ of the thermal switch. With the thermal switch in the erating condition.

  • Page 14: Bushings

    Details of the internal tapchanger mechanism can be it into position. When the draw lead terminal is properly obtained through your local Westinghouse Sales Office. engaged in the slot about 1/2 inch of thread protrudes Tap changers are designed to operate without mainte­...

  • Page 15: Cover-Mounted Above 25 Kv Class

    "Ungrounded Specimen Method" without disconnecting the bushing from the transformer winding. Refer to Westinghouse Bushing Manual, T.D. 33-360, for SILICONE RUBBER GASKET instructions on how to make bushing test and how to analyze the test results.
  • Page 16 TERMINAL CAP CONNECTION DRAW THROUGH � �--- MAGNETIC GAUGE LEAD TRANSFORMER --- RETAINING GASKET COPPER DIAPHRAGM F LEXING D UE DIFFERENTIAL EXPANSION SELF TAPPING SCREW GASKET STOP PORCELAIN GAUGE DETERMINING SCREW SPRING SETTING REMO VED REPLACE PART GAUGE GLASS CHAMBER COIL S PRING ASSEMBLY D I A L...
  • Page 18 in the bolt head. This bolt must be installed with the bolt head up so as to accept the power factor check device All bushing flange installation bolts are to be cap. TESTING CLIP tightened to a maximum torque of 250 inch-pounds. Greater torque may damage the bushing flange.

  • Page 19: Wall-Mounted Bushings 2 .5 Kv

    (53 35 1 GH) before it is installed. The bushing should be 5 . 1 3. 3 Wall Mounted Bushings 2.5 K V 25 K V Class · correctly rotated and c a re fully centered as it is lowered against the boss so that clearances from internal parts of the transformer are adequate.

  • Page 20: Lightning Arresters

    completion, pressure test the transformer as described in The assembly can then be bolted to the transformer with Section 2.3 of this booklet. an aluminum clamping plate, using eithe r a cork-Buna "N" or nitrile ring gasket to seal the bushing to the wall. Cast Resin Welded Bush ings ( T ype CR W) (See Fig.
  • Page 21 N O N - M AG N ET I C B U S H I NG P LAT E ( I N T E G R A L P A R T O F X-FO R M E R T A N K) T I N P LAT E D A LU M I N U M O R COPPE R...

  • Page 22: Current Transformers

    The cantilever strength should not be exceeded under any combination of forces. CURRENT TRANSFORMER SECONDARY LEADS MUST BE CONNECTED TO A LOAD OR SHORT CIR­ L ightning Arrester Installation Procedure CUITED WHEN THE TRANSFORMER IS ENERGIZED. If an insulating base is use d , bolt it to the mounting I F THE S E C ON DARY LEADS ARE OPEN, EX­...

  • Page 23: Installation

    AND THE FLUID LEVEL IS NOT ABOVE THAT PAR· TICULAR OPENING. If any object is dropped into the transformer and can· not be retrieve d, a Westinghouse representative must be NEVER ALLOW ANYONE TO ENTER THE TRANS. notified immediately. FORMER TANK UNLESS AN ANALYSIS OF THE AIR IN THE TANK SHOWS AT LEAST 1 9.5% OXYGEN.

  • Page 24: Location And Mounting

    not be filled with fluid before the tank is opened, limit The use o f pressure gauges containing mercury should the total open time to hours. Refer to Sections be avoided unless an effective trap is placed between the through for instructions on liquid filling and ventila­...

  • Page 25: Preparation For Energization

    ardized units. To install the switchge ar adapter, first re­ ) Insulation Meggar Test move the adapter housing if it is shipped installed on the transformer and then align the t ransformer with the To insure that no grounding of the windings exists, a switchgear.

  • Page 26: Operation

    ) b) Check tap changer operating mechanism to make sure that the tap changer is in the proper posi­ tion for the required voltage. Make a physical examination of control circuit wiring and alarm devices. Look for cut or broken insulation, and open connections.

  • Page 27: Operation Instructions

    exceed 1 1 0% of the rated voltage. (For example, 1 5 840 volts when the tap changer is in the 1 4400 volt position). 3 . Transformers depend entirely on the surrounding air to dissipate heat from the t ransformer losses. The am­ °...

  • Page 28: Inherent Hazards

    e) Percent impedance on the same kV A base must be 3 . Oil filled transformers present a fire h azard to the in­ the same within 7 . 5 % for two winding transformers. stallation area. All liquid leaks must be repaired imme­ diately because transformer liquid is very flammable.

  • Page 29: Maintenance Schedule

    Instruction Book 45-063- 1 00 for OIL , Instruc­ tion Book 45 -063 - 1 02 for SIL ICONE FLUID and Instruc­ 6 . Paint Finish tion Book 47-05 3 - 1 for WEMCO "FR" through the near­ est Westinghouse Sales Office. 7 . Surface Temperature with Infrared 8.3 Drying of Transformer...

  • Page 30: Vacuum-Filling Of Transformer

    CAUTION Insulation Resistance Temperature Correction It is hazardous to attempt drying out a transformer un· Correc- Transformer Correc- Transformer less constant attention is given the job. An unattended Tempera- tion Tempera- tion ° ° transformer could be destroyed if the coils are allowed to Factor ture Factor...

  • Page 31: Vacuum Equipment And Procedures

    Table 4 Vacuum Treatment and Liquid Filling When the core and coil assembly is out of liquid , the conditions are similar to those during shipment in dry gas. 15 PSI or Full Vacuum Tanks It is, therefore , important to make repairs quickly and get the core and coils submerged, in order to avoid the long Absolute Pressure Vacuum Holding...

  • Page 32: Ventilation Of Tank

    It is important that the entire system be free from d . In order to conserve dry air, place a light cover of ply­ wood, hardboard, or plastic over the manhole opening. leaks, otherwise it may be difficult or impossible to attain The work should be pe rform e d in a sequence such that the specified vacuum levels.

  • Page 33: Finish

    2 . All rusted areas should be thoroughly wire-brushed, sanded, etc., to remove all rust, loose paint, etc. 9.2 Report all failures during the warrantee period to your Westinghouse Sales Office . All warrantee repairs CAUTION must be made or approved by Westinghouse .
  • Page 34 9 . 1 0 The core and coil assembly can be repaired or re­ test valve until the vacuum-pressure gauge reads zero psi. placed by Westinghouse personnel at either the factory or If the transformer does not have these items SLOWLY at a Westinghouse Repair Plant.
  • Page 35 M E M O RAN D U M...
  • Page 36 1 002 - 479 - 9 7 9 PS - 1 00 1 - 1 07 6 S u p e rcedes PS - Printed i n U.S .A.

Table of Contents