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Instruction Book 

 

Page 26

 

Effective: February 2007 

 

 

For more information visit: www.EatonElectrical.com 

I.B. 8295A61H07 

 

 

SECTION 5: DESCRIPTION AND 
OPERATION

 

Cutler-Hammer Type VCP-WR breaker elements are 
vacuum type interrupting elements designed to offer 
value added construction. The VCP-WR Red Line family 
of circuit breaker elements is comprised of three 
element types (Series 18, Series 20 and Series 29). The 
nominal widths are 18 inches for Series 18, 20 inches 
for Series 20 and 29 inches for Series 29 (Figures 

3-1, 

3-3 

and 

3-5

)

Any one of the three available elements 

can be used as a retrofitting drawout breaker when 
others provide and combine the appropriate cell 
interface, truck, levering mechanism, secondary 
connections, interlocks and other accessory items with 
the VCP-WR element. VCP-WR elements can also be 
used for fixed breaker applications with the customer 
responsible for all required interfaces and interphase 
barriers. The appropriately sized interphase barriers must 
be installed to comply with individual rating electrical 
clearance requirements as described in Section 6. A 
movable truck and levering mechanism would not be 
required for a fixed breaker application. Details 
concerning mechanical and electrical interfacing needs 
associated with the use of a VCP-WR breaker element 
are found in Section 6 of this instruction book. 

5-1 CIRCUIT BREAKER ELEMENTS 

Series  18,  20  and 29  VCP-WR circuit breaker elements 
are  designed  and  tested  for  use  and  installation  in 
keeping  with  ANSI  Standard  C37.59.  The  three  circuit 
breaker  element  designs  can  be  used  for  drawout  or 
fixed  applications  depending  upon  how  others  use 
and/or retrofit the VCP-WR breaker elements. All safety 
inter-locks  required  by  ANSI  Standards  are  part  of  the 
breaker  element  and  are  integral  to  all  three  designs. 
Certain required interlocks, however, are only complete 
when  compatible  cell  interlock  devices  are  provided. 
The  matching  cell  interlocks,  whether  mechanical  or 
electrical,  are  the  total  responsibility  of  the  customer. 
Interfacing  information  is  provided  in  this  instruction 
manual to simplify the interfacing task. 

The highly reliable mechanisms for all three designs are 
similar front, vertically mounted spring stored energy 
types. The designs not only aid with personal safety, but 
also provide for simplified inspections and servicing 
accessibility (Figure 

5-1

).

 

Circuit breaker duty vacuum interrupters are used to 
close and open primary circuits. The vacuum interrupters 

 

 

 
used have a proven record for reliability, long life and 
minimal maintenance (Figures 

3-2, 3-4 

and 

3-6

).

 

The standard primary insulation used on all VCP-WR 
breaker elements is high strength, flame retardant glass 
polyester. Cycloaliphatic epoxy primary insulation is an 
available option with the Series 29 VCP-WR breaker 
element. Type SIS AWG #14 wire is used on all 
VCPWR control circuits. 

5-2 INTERRUPTER ASSEMBLY 

Vacuum interrupters are mounted vertically and 
supported from the fixed stem fastened to the top or 
bottom conductor, depending upon which VCP-WR 
breaker series. The Series 20 VCP-WR breaker element 
clamps the fixed stems to the bottom conductors (Figure 

5-2

)

The Series 18 and 29 breaker elements clamp the 

fixed stems to the top conductors (Figures 

5-3 

and 

5-4

)

All configurations, however, utilize a patented V-flex 
non-sliding current transfer system. The current transfer 
system consists of a series of tin-plated, high-
conductivity copper leaf conductors that are swaged 
onto the movable interrupter stem. This provides a multi-
point contact resulting in low electrical and thermal 
resistance. Since the current transfer from the movable 
stem to the circuit breaker conductor is a non-sliding 
design, no maintenance is required. 

5-2.1 VACUUM INTERRUPTER 

Type VCP-WR breaker elements utilize vacuum 
interrupters for interruption and switching functions 
(Figure 

5-5

).

 

Vacuum interruption offers the 

advantages of enclosed interrupters, reduced size and 
weight, short interrupting time, long life, reduced 
maintenance, and environmental compatibility. 
Arc interruption is simple and fast. In the closed 
position, current flows through the interrupter. An arc is 
drawn between the contact surfaces when the contacts 
are opened. It is rapidly moved around the slotted con-
tact surfaces by a self-induced magnetic force which 
prevents gross contact erosion as well as the formation 
of contact surface hot spots. The arc burns in an ionized 
metal vapor which continually leaves the contact area 
and condenses on the surrounding metal shield. At cur-
rent zero the arc is extinguished and vapor production 
ceases. Very rapid dispersion, cooling, recombination, 
and deionization of the metal vapor plasma together 
with fast condensation of metal vapor products cause 
the vacuum to be quickly restored. Hence, the opened 
contacts withstand the transient recovery voltage. 
 

Содержание Cutler-Hammer VCP-WR Series

Страница 1: ...ical com Instructions for the Use Operation and Maintenance of The Red Line Types VCP WR VCP WRC VCP WRG and VCP WRGC Fixed Vacuum Circuit Breaker Elements I B 8295A61H07 Supersedes I B 8295A61H06 dat...

Страница 2: ......

Страница 3: ...IL 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 CIRCUIT...

Страница 4: ...ION AND OPERATION 25 4 1 Initial InAspection 25 4 2 Manual Operation Check 25 4 3 Interface Verification 25 SECTION 5 DESCRIPTION AND OPERATION 26 5 1 Circuit Breaker Element 26 5 2 Interrupter Assemb...

Страница 5: ...Element Interfaces 37 6 4 1 Initial Interfacing Steps 37 6 4 2 Electrical Interfaces 38 6 4 3 Mechanical Interfaces 38 6 5 Series 29 Breaker Element Interfaces 39 6 5 1 Initial Interfacing Steps 39 6...

Страница 6: ...n Sliding Current Transfer System 29 5 6 Closing Cam and Trip Linkage 31 5 7 Charging Schematic 32 6 1 Typical VCP WR Front Cover Nameplate and Operational Indicators 35 6 2 Typical VCP WR DC and AC C...

Страница 7: ...CIRCUMSTANCES BE APPLIED OUT SIDE THEIR NAMEPLATE RATINGS 1 1 TYPE VCP WR RED LINE SERIES RATINGS Table 1 1 VCP WR Ratings Identification Rated Values Related Required Capabilities Current Current Val...

Страница 8: ...00 50 57 57 52 64 64 62 139 50 50 2 0 9 0 9 0 8 630 5 6 1000 5 6 15 18 3 5 2 7 10 000 10 000 5 000 270 VCP WR25C 29 27 1 60 125 1200 1600 25 75 36 85 25 8 50 2 1 1 400 20 4 2 2 500 270 VCP WR32C 29 27...

Страница 9: ...n Book Effective February 2007 Page 3 I B 8295A61H07 For more information visit www EatonElectrical com 1 2 TYPE VCP WR OUTLINES AND DIMENSIONS Figure 1 1 VCP WR Series 18 Element Outlines and Dimensi...

Страница 10: ...Instruction Book Page 4 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 1 1 VCP WR Series 18 Element Outlines and Dimensions inches continued...

Страница 11: ...Instruction Book Effective February 2007 Page 5 I B 8295A61H07 For more information visit www EatonElectrical com Figure 1 2 VCP WR Series 20 Element Outlines and Dimensions inches...

Страница 12: ...Instruction Book Page 6 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 1 2 VCP WR Series 20 Element Outlines and Dimensions inches continued...

Страница 13: ...Instruction Book Effective February 2007 Page 7 I B 8295A61H07 For more information visit www EatonElectrical com Figure 1 3 VCP WR Series 29 Element Outlines and Dimensions inches...

Страница 14: ...Instruction Book Page 8 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 1 3 VCP WR Series 29 Element Outlines and Dimensions inches continued...

Страница 15: ...Instruction Book Effective February 2007 Page 9 I B 8295A61H07 For more information visit www EatonElectrical com Figure 1 3 VCP WR Series 29 Element Outlines and Dimensions inches continued...

Страница 16: ...Instruction Book Page 10 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 1 4 240 270 VCP WR Series 29 Element Outlines and Dimensions inches...

Страница 17: ...Instruction Book Effective February 2007 Page 11 I B 8295A61H07 For more information visit www EatonElectrical com Figure 1 5 240 270 VCP WR Series 29 Element Outlines and Dimensions inches continued...

Страница 18: ...Instruction Book Page 12 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 1 6 240 270 VCP WR Series 29 Element Outlines and Dimensions inches continued...

Страница 19: ...ction Book Effective February 2007 Page 13 I B 8295A61H07 For more information visit www EatonElectrical com Figure 1 7 240 270 VCP WR and VCP WRGC Series 29 Element Outlines and Dimensions inches con...

Страница 20: ...ction Book Page 14 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 1 8 240 270 VCP WR and VCP WRGC Series 29 Element Outlines and Dimensions inches con...

Страница 21: ...If the breaker is applied in a fixed configuration always make sure that primary and secondary power are disconnected from the breaker Failure to do so could result in electrical shock leading to deat...

Страница 22: ...d either by use of a rope sling and overhead lifting device or by a fork lift truck If containers must be skidded for any distance it is preferable to use roller conveyors or individual pipe rollers O...

Страница 23: ...on to prevent condensation If the building is not heated the same general rule for heat as for outdoor storage should be applied 3 4 TYPE VCP WR BREAKER WEIGHTS Table 3 1 VCP WR Breaker Weights pounds...

Страница 24: ...Instruction Book Page 18 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 3 1 Front View VCP WR Series 18...

Страница 25: ...Instruction Book Effective February 2007 Page 19 I B 8295A61H07 For more information visit www EatonElectrical com Figure 3 2 Rear View VCP WR Series 18...

Страница 26: ...Instruction Book Page 20 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 3 3 Front View VCP WR Series 20...

Страница 27: ...nstruction Book Effective February 2007 Page 21 I B 8295A61H07 For more information visit www EatonElectrical com Figure 3 4 Front External View of DHP VR Breaker 7 5 and 15 kV 500 and 750 MVA Ratings...

Страница 28: ...Instruction Book Page 22 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 3 5 Front View VCP WR Series 29...

Страница 29: ...Instruction Book Effective February 2007 Page 23 I B 8295A61H07 For more information visit www EatonElectrical com Figure 3 6 Rear View VCP WR Series 29...

Страница 30: ...Instruction Book Page 24 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 3 7 Typical VCP WR Escutcheon...

Страница 31: ...ool into the manual charge socket opening and charge the closing springs with approximately 38 up and down strokes of the handle Figure 3 7 When charging is complete the closing crank goes over center...

Страница 32: ...pections and servicing accessibility Figure 5 1 Circuit breaker duty vacuum interrupters are used to close and open primary circuits The vacuum interrupters used have a proven record for reliability l...

Страница 33: ...Instruction Book Effective February 2007 Page 27 I B 8295A61H07 For more information visit www EatonElectrical com Figure 5 1 Typical VCP WR Front Mounted Mechanism...

Страница 34: ...nterrupter Figures 7 2 and 7 3 In order to determine if the contacts have eroded to the extent that the interrupter must be replaced observe the erosion mark placed on each moving stem from the rear o...

Страница 35: ...sion of contacts the wipe decreases A great deal of effort has been spent in the design of all Cutler Hammer vacuum breakers in order to eliminate the need for field adjustments of wipe or stroke CAUT...

Страница 36: ...g cranks The closing cam being attached to the cam shaft in turn rotates the pole shaft through the main link to close the breaker In Figure 5 6c the linkage is shown with the breaker in the closed po...

Страница 37: ...Instruction Book Effective February 2007 Page 31 I B 8295A61H07 For more information visit www EatonElectrical com Figure 5 6 Closing Cam and Trip Linkage...

Страница 38: ...Instruction Book Page 32 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 5 7 charging schematic...

Страница 39: ...alues for VCP WR breakers are shown in Table 5 1 5 4 2 TERMINAL BLOCKS All VCP WR breaker elements are supplied with 2 12 point secondary control terminal blocks for simple secondary control access A...

Страница 40: ...g associated with a particular breaker element is clearly indicated on the breaker s nameplate located on the front cover 6 2 2 INTERPHASE BARRIERS ANSI standards require specific minimum air space cl...

Страница 41: ...ilable for customer use Figure 6 2 6 3 3 MECHANICAL INTERFACES The customer is responsible for providing all required mechanical interfaces to insure that the Series 18 element is properly installed a...

Страница 42: ...Instruction Book Page 36 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 6 2 Typical VCP WR DC and AC Contral Schematics...

Страница 43: ...me manner as the auxiliary switch contacts in the breaker The MOC switch operator is located on the bottom of the Figure 6 3 Series 18 Primary Connection Series 18 breaker element Figure 6 4 An option...

Страница 44: ...s and auxiliary switch operators if required Primary Connections The customer is responsible for providing all properly sized primary connections to the VCP WR breaker element whether the connections...

Страница 45: ...terminal blocks located at the bottom of the breaker element Figure 3 5 The Series 29 control scheme indicates which points are used for breaker operation and which are available for customer use Fig...

Страница 46: ...p the tripper rollers When required the customer is responsible for providing the proper interfaces with the Series 29 opening closing floor trippers Refer to the Series 29 outline Figure 6 7 Series 2...

Страница 47: ...SPRINGS DO NOT STAND LESS THAN ONE METER AWAY FROM THE BREAKER WHEN TESTING FOR VACUUM INTEGRITY FAILURE TO FOLLOW ANY OF THESE INSTRUCTIONS MAY CAUSE DEATH SERIOUS BODILY INJURY OR PROPERTY DAMAGE S...

Страница 48: ...is not visible replace pole unit assembly Replace pole unit assembly Replace pole unit assembly Clean with dry lint free cloth 3 Control Circuit Parts Closing and Tripping Device Including Disconnect...

Страница 49: ...R OF CONTACTS IN VACUUM MAY PRODUCE X RADIATION THE RADIATION MAY INCREASE WITH THE INCREASE IN VOLTAGE AND OR DECREASE IN CONTACT SPACING X RADIATION PRODUCED DURING THIS TEST WITH RECOMMENDED VOLTAG...

Страница 50: ...Contact Erosion Indicator with Breaker Closed Indicators are Checked Only When Breaker is Closed ever during high current interruptions there may be a minimum amount of erosion from the contact surfa...

Страница 51: ...minute Repeat for the remaining poles Successful withstand indicates satisfactory insulation strength of the primary circuit If a DC high potential machine is used make certain that the peak voltage d...

Страница 52: ...Instruction Book Page 46 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07 Figure 7 5 Wipe Indication Procedure Performed Only with Breaker Closed...

Страница 53: ...Circuit Control Power fuse blown or switch off Secondary Disconnects Motor Cut off Switch Poor or burned contacts Lever not operational Terminals and connectors Poor or burned contacts Motor Brushes...

Страница 54: ...N C contact open or burned or relay picks up Close Coil Open or burned Latch Check Switch Contact open bad switch or trip bar not reset Auxiliary Switch b contact open or burned Motor Cut off Contacts...

Страница 55: ...welded Control circuit Mechanism Control Power Fuse blown or switch off Secondary Disconnect Auxiliary Switch a contact not making poor or burned Trip Coil Burned or open Terminals and Connections Po...

Страница 56: ...r to customer depending upon the service severity and continuity requirements Each customer should develop his own stock level based on operating experience Table 8 1 8 2 ORDERING INSTRUCTIONS a Alway...

Страница 57: ...e Number Description Type Cont Current C L VCP 29WR VCP 29WRSE Interrupter Assembly 50 250 1200A 58kA 4 4 SC 3A73901H01 3A73901H21 50 250 2000A 58kA 5 5 SC 3A73902H01 3A73902H21 50 250 2000A 58kA 5 3A...

Страница 58: ...ont Current C L VCP 29WR VCP 29WRSE 75 500 1200A 66kA 3A73907H01 3A73907H02 75 500 2000A 66kA 3A73908H01 3A73908H02 75 500 3000A 66kA 3A73909H01 3A73909H02 150 500 1200A 37kA 4 3 SC 3A73910H01 3A73910...

Страница 59: ...umber Style Number Description Type Cont Current C L VCP 29WR VCP 29WRSE 150 750 1200A 58kA 3A73913H01 3A73913H02 150 750 2000A 58kA 3A73914H01 3A73914H02 150 750 3000A 58kA 3A73915H01 3A73915H02 150...

Страница 60: ...urrent C L VCP 29WR VCP 29WRSE 150 63 1200A 101kA 150 63 2000A 58kA 150 63 3000A 58kA 3A73916H31 3A73917H31 3A73918H31 270 25 32 40 1200A 270 25 32 40 2000A 270 25 32C 40C 1200A 270 25 32C 40C 2000A 8...

Страница 61: ...ts Continued Style Number Description Type cont current C L VCP 18WR 50 250 1200A 58kA 50 250 1200A 78kA 3A73923H01 3A73932H01 50 250 2000A 58kA 50 350 2000A 78kA 3A73924H01 3A73933H01 75 500 1200A 66...

Страница 62: ...ent C L VCP 18WR 150 500 2000A 37kA 3A73929H01 150 750 1200A 58kA 3A73930H01 150 750 2000A 58kA 3A73931H01 Style Number Style Number Description Type cont current C L VCP 29WR VCP 29WRSE Phase Barrier...

Страница 63: ...d Assemblies Up to 15kV BLUE SPRINGS 692C799G01 Up to 15kV RED SPRINGS 692C799G02 Up to 15kV WHITE SPRINGS 692C650G01 692C650G02 Up to 15kV BLUE SPRINGS 692C651G01 692C651G02 Up to 15kV RED SPRINGS OR...

Страница 64: ...WRSE Lower Support Up to 15kV 350 1000 MVA 1200 2000A 5697B19H01 686C575H01 27kV 1C94707H01 Shock absorber 350 1000MVA 1200 2000A 63kA 27kV 5677B26H01 5677B26H01 Style Number Description VCP 20WR Phas...

Страница 65: ...VCP 20WR Phase Barriers Up to 5kV except 50 350 1200A 2000A 5677B34H01 5677B36H01 Shock Absorber 5677B26H01 Style Number Description VCP 29WR VCP 29WRSE VCP 20WR VCP 18WR Charging Motor 48 VDC 125VDC...

Страница 66: ...0VAC 8237A27H03 8237A27H04 8237A27H05 8237A27H01 8237A27H02 8237A27H03 8237A27H04 8237A27H05 8237A27H01 8237A27H02 8237A27H03 8237A27H04 8237A27H05 8237A27H01 8237A27H02 8237A27H03 8237A27H04 8237A27H...

Страница 67: ...E VCP 20WR VCP 18WR Motor Cutoff Switch 699B199G04 699B199G04 699B199G04 Motor Cutoff Switch 5677B02G11 Latch Check Switch 699B147G01 699B147G01 699B147G01 699B147G01 Position Switch 1 Position Switch...

Страница 68: ...HUNT TRIP Number 2 8794C84G11 48VDC 8794C84G12 125VDC 120CAP 8794C84G13 250VDC 240CAP 8794C84G14 24VDC 8794C84G11 48VDC 8794C84G12 125VDC 120CAP 8794C84G13 250VDC 240CAP 8794C84G14 24VDC 8794C84G11 48...

Страница 69: ...al com Table 8 1 Recommended VCP WR Spare Parts Continued Style Number Description Type Cont Current C L VCP WRG 50 63 WRG 1200A 50 63 WRG 2000A 50 63 WRG 3000A 8297A29H33 8297A30H33 8297A31H33 150 63...

Страница 70: ...Instruction Book Page 64 Effective February 2007 For more information visit www EatonElectrical com I B 8295A61H07...

Страница 71: ...WR VCP WRC VCP WRG and VCP WRGC Fixed Vacuum Circuit Breaker Elements 2005 Eaton Corporation All Rights Reserved Printed in USA Publication No IB8295A61H07 ISI February 2007 Corporation Cutler Hammer...

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