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 WARNING

INSTALLATION OR MAINTENANCE SHOULD BE ATTEMPTED 

ONLY BY QUALIFIED PERSONNEL. THIS SUPPLEMENTAL 

INSTRUCTION BOOKLET IS INTENDED TO ACCOMPANY 

THE ORIGINAL INSTRUCTION BOOKLET PROVIDED WITH 

THE VCP-W CIRCUIT BREAKER AND SHOULD NOT BE 

CONSIDERED ALL INCLUSIVE REGARDING INSTALLATION 

OR MAINTENANCE PROCEDURES. THIS IS NOT TO BE USED 

IN PLACE OF THE VCP-W CIRCUIT BREAKER INSTRUCTION 

BOOKLET. IF FURTHER INFORMATION IS REQUIRED, YOU 

SHOULD CONSULT EATON.
IMPROPERLY INSTALLING OR MAINTAINING THESE 

PRODUCTS CAN RESULT IN DEATH, SERIOUS PERSONAL 

INJURY OR PROPERTY DAMAGE.
READ AND UNDERSTAND THE VCP-W INSTRUCTION 

BOOKLET BEFORE ATTEMPTING ANY OPERATION OR 

MAINTENANCE OF THE CIRCUIT BREAKERS.
THE CIRCUIT BREAKERS FEATURED IN THIS BOOKLET 

ARE DESIGNED AND TESTED TO OPERATE WITHIN THEIR 

NAMEPLATE RATINGS. OPERATION OUTSIDE OF THESE 

RATINGS MAY CAUSE THE EQUIPMENT TO FAIL, RESULTING 

IN DEATH, BODILY INJURY AND PROPERTY DAMAGE.
ALL SAFETY CODES, SAFETY STANDARDS AND/OR 

REGULATIONS AS THEY MAY BE APPLIED TO THIS TYPE OF 

EQUIPMENT MUST BE STRICTLY ADHERED TO.
THESE VACUUM REPLACEMENT CIRCUIT BREAKERS ARE 

DESIGNED TO BE INSTALLED PURSUANT TO THE AMERICAN 

NATIONAL STANDARDS INSTITUTE (ANSI). SERIOUS 

INJURY, INCLUDING DEATH, CAN RESULT FROM FAILURE TO 

FOLLOW THE PROCEDURES OUTLINED IN THIS BOOKLET.
ALL POSSIBLE CONTINGENCIES WHICH MIGHT ARISE 

DURING INSTALLATION, OPERATION, OR MAINTENANCE, 

AND ALL DETAILS AND VARIATIONS OF THIS EQUIPMENT 

ARE NOT COVERED BY THESE INSTRUCTIONS. IF FURTHER 

INFORMATION IS DESIRED BY THE PURCHASER REGARDING 

A PARTICULAR INSTALLATION, OPERATION, OR 

MAINTENANCE OF THIS EQUIPMENT, THE LOCAL EATON’S 

ELECTRICAL SERVICES & SYSTEMS REPRESENTATIVE 

SHOULD BE CONTACTED.

 WARNING

TO PROTECT THE PERSONNEL ASSOCIATED WITH 

INSTALLATION, OPERATION, AND MAINTENANCE OF THESE 

CIRCUIT BREAKERS, THE FOLLOWING PRACTICES MUST BE 

FOLLOWED:

Read the instruction booklet provided with the

VCP-W circuit breaker before attempting any

installation, operation or maintenance of these

circuit breakers.

Only qualified persons, as defined in the National

Electrical Safety Code, who are familiar with the

installation and maintenance of medium voltage

circuits and equipment, should be permitted to

work on these circuit breakers.

Always remove the circuit breaker from the

enclosure before performing any maintenance.

Failure to do so could result in electrical shock

leading to death, severe personnel injury or

property damage.

Do not work on a circuit breaker with the

secondary test coupler engaged. Failure to

disconnect the test coupler could result in an

electrical shock leading to death, personnel

injury or property damage.

Do not work on a closed circuit breaker or a

circuit breaker with closing springs charged.

The closing spring should be discharged and the

main contacts open before working on the circuit

breaker. Failure to do so could result in cutting or

crushing injuries.

Do not use a circuit breaker by itself as the

sole means of isolating a high voltage circuit.

Remove the circuit breaker to the Disconnect

position and follow all lockout and tagging rules

of the National Electrical Code and any and all

applicable codes, regulations and work rules.

Do not leave the circuit breaker in an

intermediate position in the cell. Always have the

circuit breaker either in the Test or Connected

position. Failure to do so could result in a flash

over and possible death, personnel injury or

property damage.

Always remove the maintenance tool from the

circuit breaker after charging the closing springs.

Circuit breakers are equipped with safety

interlocks. Do not defeat them. This may result in

death, bodily injury or equipment damage.

Table of Contents

Vacuum Interrupter 

Vacuum Interrupter 

3

Vacuum Interrupter Assembly 

3

Vacuum Interrupter Integrity Test 

Vacuum Interrupter Integrity Testing Configuration 

4

Insulation Integrity Test 

Power Frequency Withstand Voltage Testing Configuration 

5

Current Path Resistance Test 

Current Path Resistance Testing Procedure 

6

Vacuum Bottle Contact Inspection 

Contact Erosion Indicator 

7

Contact Wipe and Stroke 

7

Mechanism Lubrication 

150VCP-W Mechanism Lubrication 

8

Component Replacement 

Replacing The Charging Motor 

9

Replacing Spring Release and Shunt Trip Coils 

10

Component Installation 

11

Installation of Second Shunt Trip 

11

Undervoltage Trip Device 

12

Component Adjustment 

13

Adjustment of the Motor Cutoff Switch 

13

Adjustment of the Operations Counter 

14

CloSure™ Test 

15

CloSure™ Tes

13

VCP-W Circuit Breaker Model 

16

V

CP-W 

5/15 63

kA 

30

00A 

16

2

EATON

   

|

   

Visual Instruction Booklet Essentials   |   150VCP-W 25kA 1200A   |   January 2017  

Summary of Contents for 150VCP-W Series

Page 1: ...A January 2017 Supplemental Material For 15kV VCP W This is a user interactive supplemental booklet This material is intended to enhance the technical information included in the instruction booklet for the 15kV VCP W circuit breaker manufactured by Eaton Supplemental Material For 15kV Element ...

Page 2: ...e permitted to work on these circuit breakers Always remove the circuit breaker from the enclosure before performing any maintenance Failure to do so could result in electrical shock leading to death severe personnel injury or property damage Do not work on a circuit breaker with the secondary test coupler engaged Failure to disconnect the test coupler could result in an electrical shock leading t...

Page 3: ...m Interrupter Assembly Each interrupter is assembled at the factory as a unit to assure correct dimensional relationships between working components The interrupter assembly consists of a vacuum interrupter a molded glass polyester stand off insulator upper and lower clamps flexible shunts bell crank operating rod and contact load spring The vacuum interrupter is mounted vertically with a fixed st...

Page 4: ... POTENTIAL TESTS ARE NOT RECOMMENDED BY EATON DO NOT APPLY DC AT ANY LEVEL TO VCP W POWER CIRCUIT BREAKERS With the circuit breaker open and securely sitting on the floor connect all top front primary studs bars together and the high potential machine lead Connect all bottom rear studs together Do not ground them to the circuit breaker frame Start the machine at zero potential increase to appropri...

Page 5: ...ELL BELOW MAXIMUM PERMITTED BY STANDARDS HOWEVER AS A PRECAUTIONARY MEASURE AGAINST POSSIBILITY OF APPLICATION OF HIGHER THAN RECOMMENDED VOLTAGE AND OR BELOW NORMAL CONTACT SPACING IT IS RECOMMENDED THAT ALL OPERATING PERSONNEL STAND AT LEAST ONE METER AWAY IN FRONT OF THE CIRCUIT BREAKER Insulation Integrity Test Note N Roll over each high potential test diagram configuration above to see the co...

Page 6: ...rminal of the phase being tested 8 Press the TEST button on the DLRO Once the TEST button is pressed 100A dc will flow through the phase being tested If the circuit breaker is not closed the DLRO will not inject current 9 Apply the DLRO positive measurement test lead to the TOP terminal Be mindful not to connect this measurement lead to the current lead This insures that the current lead is not be...

Page 7: ...mount of motion to the operating rods The first portion of the motion is used to close the contacts i e stroke and the remainder is used to further compress the preloaded wipe spring This additional compression is called wipe Wipe and stroke are thus related to each other As the stroke increases due to the erosion of contacts the wipe decreases A great deal of effort and ingenuity has been spent i...

Page 8: ...rcuit breaker several times manually and electrically Roller bearings are used on the pole shaft the cam shaft the main link and the motor eccentric These bearings are packed at the factory with a top grade slow oxidizing grease which normally should be effective for many years They should not be disturbed unless there is definite evidence of sluggishness dirt or parts are dismantled for some reas...

Page 9: ... the eccentric counterclockwise use a wooden hammer handle to break the threads Remove the two screws on the right hand motor support plate using a 9 64in Allen wrench Remove the motor plate from the side sheet for the 5kV circuit breaker Remove the motor Verify the new motor has the correct motor voltage on the motor sticker Lubricate the motor threads using molybdenum disulfide grease Eaton No 5...

Page 10: ...ead bolt lock washer and spacer that hold the coil in place Be careful to capture the two fiber insulating washers behind the coil Note N The 5 16 x 3 in bolt is made of silicon bronze for magnetic purposes and must never be replaced with a steel bolt Slide the coil out of its bracket to its available open side and feed the wires through Remove the metal core from the center of the coil Install ne...

Page 11: ...of wires make sure 2nd Shunt trip wires route the same way Place aluminum shim on back of 2nd shunt trip as shown Hold shim in place while you begin installation Make sure wires are routed through the same opening as the existing Install 2nd Shunt Trip next to existing Push to Open Assembly as shown hand tighten center bolt Make sure aluminum shim does not fall out Make sure steel brackets that st...

Page 12: ...Vac For a basic understanding of the operation of the under voltage trip device refer to IB131006EN and the following operation description 1 With the circuit breaker closed and sufficient voltage on the Undervoltage Trip Device coil the moving clapper 1 is held to the stationary yoke 2 by the magnetic force produced by the coil 3 against the extension springs 4 pulling the moving clapper apart fr...

Page 13: ...the same position Verify the electrical operation of the motor making sure that the motor circuit cuts off at the appropriate time If during an electrical charging operation the camshaft fails to rotate far enough for the motor cutoff switches to actuate the charging pawls may require adjustment Component Adjustment Testing the motor cutoff switch for adjustment on a 150VCP W25 mechanism Return th...

Page 14: ...isconnect the operating link Loosen the handle screw on the counter Align the back edge of the arm with back edge of counter operator and tighten the screw Attach the operating link with the bent leg pointing down and away from you to the lower hole in left side of flag link and to counter handle and mount the counter to bracket using the two mounting screws and hardware Be sure the hardware is ti...

Page 15: ...PTED SAFETY PROCEDURES Safety Precautions Read and understand the instruction manual for specific instructions before attempting any maintenance repair or testing on the circuit breaker The user is cautioned to observe all recommendations warnings and cautions relating to the safety of personnel and equipment The recommendations and information contained herein are based on experience and judgment...

Page 16: ...VCP W Circuit Breaker Model VCP W 5 15 63kA 3000A 16 EATON Visual Instruction Booklet Essentials 150VCP W 25kA 1200A January 2017 ...

Page 17: ...r customers effectively manage electrical hydraulic and mechanical power A global technology leader Eaton acquired Cooper Industries plc in November 2012 The 2012 revenue of the combined companies was 21 8 billion on a pro forma basis Eaton has approximately 103 000 employees and sells products to customers in more than 175 countries For more information visit www eaton com Eaton is a registered t...

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