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17

Instruction Book IB182942EN May 2019 www.eaton.com

DST-2-VR

+

VR-Series

+

Replacement Circuit Breaker

Figurt 4.4. Typical ac/dc Schtmatic

Closed until springs are fully charged

Open until springs are fully charged

Closed until springs are fully charged

Open until mechanism is reset

Open in all except between ‘Test’
and ’Connect’ positions

Closed in all except between ‘Test’
and ‘Connect’ positions

OPERATION

‘C’ and ‘NO’

‘C’ and ‘NC’

‘C’ and ‘NO’

‘C’ and ‘NO’
‘C’ and ‘NC’

‘C’ and ‘NO’

Brown Switch

Black Switch

Black Switch

Brown Switch

SWITCH TERMINAL

LS1
bb
LS2
aa
LS2
bb
LC

PS1

PS2

Circuit Breaker Control Switch - close

Circuit Breaker Control Switch - trip

Anti Pump Relay
Spring Release Coil (Close Coil)
Spring Charging Motor
Shunt Trip Coil
Protective Relay
Terminal Block or Accessible Terminal
Position Switch 1
Position Switch 2

-

-

-
-
-
-
-
-
-
-

CS
C
CS
T
Y
SR
M
ST
PR
O
PS1
PS2

VR-Series

+

Circuit Breaker dc Control Schematic

VR-Series

+

Circuit Breaker ac Control Schematic

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Содержание DST-2-15-VR+

Страница 1: ...Instruction Book IB182942EN DST 2 VR VR Series Replacement Circuit Breaker DST 2 15 VR 500 2000A Shown May 2019 Supersedes July 2018 Effective...

Страница 2: ...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 particular eq...

Страница 3: ...ERATION CHECK 21 5 4 VACUUM INTERRUPTER INTEGRITY 21 5 5 LOW FREQUENCY WITHSTAND TEST INSULATION CHECK 21 5 6 CONTACT EROSION AND WIPE 21 5 7 PRIMARY CIRCUIT RESISTANCE 21 5 8 ELECTRICAL OPERATIONS CH...

Страница 4: ...portant that this installation and maintenance instruction booklet be read and followed closely to achieve optimum performance and a long useful circuit breaker life in its application 1 1 VISUAL INST...

Страница 5: ...kV Peak I kA RMS KI kA RMS kA RMS Peak DST 2 5 250 DST 2 5 VR 250 4 76 250 1200 2000 1 24 19 60 29 36 58 97 DST 2 5 250 DST 2 5 VR 41 b c 4 76 N A 1200 200 1 0 19 60 41 41 78 132 DST 2 7 5 500 DST 2 7...

Страница 6: ...acement Circuit Breaker Table 2 DST 2 VR Dimensions Circuit Breaker Type Existing Circuit Breaker Rated Continuous Current at 60 Hz Amps A B C D E F DST 2 15 VR 1200 2000 65 38 25 75 7 88 34 18 11 00...

Страница 7: ...st coupler engaged Failure to disconnect the test coupler could result in an electrical shock leading to death severe personal injury equipment damage and or improper operation Do not work on a closed...

Страница 8: ...and other components If damaged or loss is detected file claims immediately with the carrier and notify an Eaton representative Tools and Accessories Maintenance Tool Style 94C9506G01 This tool is use...

Страница 9: ...it in to storage The circuit breaker is shipped with its contacts open and closing springs discharged The indicators on the front cover should confirm this Insert the end of the maintenance tool into...

Страница 10: ...VR Front External View 1 Lock Out Tag Out 6 Manual Charging Socket 11 Interlock Pedal 2 Levering Point 7 Spring Charged Discharged Indicator 12 Manual Motor Cut Off Switch 3 Terminal Block Access 8 Op...

Страница 11: ...com DST 2 VR VR Series Replacement Circuit Breaker Figure 3 3 b Rear External View of DST 2 15 VR Rear External View 1 Lifting Points 4 Anti Rotation Self Adjuster Optional 2 Secondary Disconnects 5...

Страница 12: ...DST 2 5 VR Front External View 1 Push to Close Button 5 Main Contact Status Indicator 9 Push To Open Button 2 Lock Out Tag Out 6 Manual Charging Socket 10 Interlock Pedal 3 Levering Point Tow Hitch 7...

Страница 13: ...EN May 2019 www eaton com DST 2 VR VR Series Replacement Circuit Breaker Figure 3 3 d Rear External View of DST 2 5 VR Rear External View 1 Lifting Points 4 Ground Contact 2 Secondary Disconnects 3 Pr...

Страница 14: ...is assembled at the factory as a unit to assure correct dimensional relationships between working components Three interrupter assemblies are used per circuit breaker Each vacuum interrupter assembly...

Страница 15: ...ER CONTACTS ARE CLOSED OR THE CLOSING SPRINGS ARE CHARGED THE CIRCUIT BREAKER CONTACTS MAY OPEN OR THE CLOSING SPRINGS DISCHARGE CAUSING CRUSHING INJURY DISCHARGE THE SPRINGS AND OPEN THE CIRCUIT BREA...

Страница 16: ...This is the anti pump function 4 4 1 TIMING The opening and closing times for the circuit breakers vary depending upon the control voltage power rating environment and test equipment Differences in ti...

Страница 17: ...est and Connect positions OPERATION C and NO C and NC C and NO C and NO C and NC C and NO Brown Switch Black Switch Black Switch Brown Switch SWITCH TERMINAL LS1 bb LS2 aa LS2 bb LC PS1 PS2 Circuit Br...

Страница 18: ...ring system tripping and spring release interlocks perform the following a Set the breaker mechanically trip free during the first 4 inches of travel into the cell and whenever the breaker receives a...

Страница 19: ...over Removed VR Series Circuit Breaker Element Mechanism 1 LH Closing Spring 5 Spring Release Assembly 9 Manual Charge Socket 2 Latch Check Switch To Rear of Motor Cutoff Switch 6 Shunt Trip Assembly...

Страница 20: ...aker Closed Springs Charged 2 1 3 4 5 6 7 8 9 10 11 12 13 14 Closing Cam and Trip Linkage 1 Spring Release Close Latch 6 Ratchet Wheel 11 Anti Close Interlock 2 Pole Shaft 7 Spring Crank 12 Motor Ratc...

Страница 21: ...2 Main Link 6 Cam Shaft 10 Trip Latch Reset Spring 3 Operating Rod 7 Banana Link 11 Shunt Trip Lever 4 Pole Shaft 8 Trip latch 12 Shunt Trip Coil 4 1 2 3 5 6 7 8 9 10 11 12 4 8 a Circuit Breaker Open...

Страница 22: ...cell containing an MOC until after the switch has been properly adjusted WARNING MEASUREMENTS AND ADJUSTMENTS SHOULD NEVER BE ATTEMPTED IN AN ENERGIZED STRUCTURE IF THE STRUCTURE CANNOT BE DE ENERGIZ...

Страница 23: ...S REMOVE THE MAINTENANCE TOOL AFTER CHARGING THE SPRING FAILURE TO REMOVE THE MAINTENANCE TOOL FROM THE BREAKER COULD CAUSE INJURY TO PERSONNEL AND OR EQUIPMENT DAMAGE IF THE BREAKER WAS TO CLOSE Clos...

Страница 24: ...The test position can be verified by the inability to move the breaker in or out the Interlock Pedal is in the up position and the cell label test is visible on the floor of the cell in front of the...

Страница 25: ...onnect position can be verified by the inability to move the breaker in or out the Interlock Pedal is up and has released the trip mechanism and the cell label operating is visible on the floor of the...

Страница 26: ...s DISCHARGED and that the main contact status indicator reads OPEN Manually trip close and trip the breaker as needed to obtain this status Note N The motor cutoff switch is located on the lower cover...

Страница 27: ...so that the circuit breaker could be closed It must be returned to the fully withdrawn condition prior to insertion in the circuit breaker compartment b From the withdrawn position align the center g...

Страница 28: ...al of the circuit breaker Note N For Canadian versions with separate disconnect and test positions it will stop at the test position Electrical and mechanical tests of the circuit breaker can be perfo...

Страница 29: ...and retest or replace Insulation Integrity Main circuit to ground Withstand 15kV 60Hz for 1 Minute 5kV Rating Hi pot Tester Clean and retest or replace Control circuit to ground Charging Motor discon...

Страница 30: ...ommended that the equipment be capable of delivering 25 milliamperes for one minute The current delivery capability of 25 mA ac applies when all three vacuum interrupters are tested in parallel If ind...

Страница 31: ...essed in micro ohms Repeat for the remaining two poles The resistance should not exceed the factory test levels more than 200 as stated in IEEE C37 09 Factory test levels are recorded on the circuit b...

Страница 32: ...ol Mounting Testing Locations by Circuit Breaker Type CIRCUIT BREAKER DESIGNATION APPROXIMATE MECHANISM CHASSIS WIDTH INCH LOWER MOUNTING HOLE LOWER MOUNTING HOLE MARKER PLACEMENT HOLE VR Series 18 A1...

Страница 33: ...sheet of paper that can be kept as a record of the test Record the date of the test person conducting the test circuit breaker serial number and the operations counter on the tape or paper Figures 6...

Страница 34: ...arker Interface Cam Marker CloSure Tool TM 15 O 15 O Figure 6 13 Determining the Distance Traveled Figure 6 14 Illustrative Testing Tape Sample Figure 6 12 Evaluate the CloSure Performance Date of Bre...

Страница 35: ...nt requires maintenance only once every ten years or ten thousand operations which ever comes first After a ten year service interval or when ten thousand operations have been reached contact your loc...

Страница 36: ...urned Motor Cut Off Contacts open or burned Trip Coil Assembly Clapper fails to reset Closing sound but no close Pole Shaft Not open fully Trip Latch Reset Spring Damaged or missing Trip Bar D Shaft F...

Страница 37: ...WITCH Circuit Breaker Auxiliary Switch 94C9525G13 5 POSITION SWITCH Circuit Breaker Position Switch PS1 94C9525H06 6 POSITION SWITCH Circuit Breaker Position Switch PS2 94C9525H07 7 LATCH CHECK SWITCH...

Страница 38: ...ulevard Cleveland OH 44122 United States Eaton com 2019 Eaton All Rights Reserved Printed in USA Publication No IB182942EN May 2019 Eaton is a registered trademark All trademarks are property of their...

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