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Related Manuals for Eaton 50DH-VE-50AXU-1200A
Summary of Contents for Eaton 50DH-VE-50AXU-1200A
- Page 1 Supersedes March 2003 Instruction Book IB182012EN Effective March 2017 50DH-VR-50AXU / 50XU / 75U / 75ARU - 600 / 1200A Replacement Circuit Breaker 50DH-VR-50AXU / 75U - 1200A (Front Racking Device) 50DH-VR-50XU / 75ARU - 1200A (Rear Racking Device)
- Page 2 SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES. In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or other-wise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the use of existing power facilities, or claims against the purchaser or user by its customers resulting from the use of the information, recommendations and descriptions contained herein.
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Page 3: Table Of Contents
SECTION 7: REPLACEMENT PARTS 4.13 CELL POSITION DESCRIPTION 7.1 GENERAL 4.13.1 50DH-VR 50AXU / 75U - FRONT RACKING 7.2 ORDERING INSTRUCTIONS 4.13.2 50DH-VR 50XU / 75ARU - REAR RACKING 4.14 MISCELLANEOUS ITEMS 4.14.1 GROUNDING CONTACT Instruction Book IB182012EN March 2017 www.eaton.com... -
Page 4: Section 1: Introduction
Satisfactory performance is dependant upon proper application, PURCHASER REGARDING A PARTICULAR INSTALLATION, OPERATION, OR correct installation, and adequate maintenance. It is strongly MAINTENANCE OF THIS EQUIPMENT, THE LOCAL EATON REPRESENTATIVE recommended that this instruction book be carefully read and SHOULD BE CONTACTED. - Page 5 Table 2. 50DH-VR (50DH-VR-50AXU/75U Front Racking Device Shown) Existing Circuit Breaker Rated Continuous Current at 60 Hz Circuit Breaker Type (Amps) 50DH-VR 50AXU/75U 1200 20.38 15.44 16.50 5.00 9.00 26.81 58.33 16.44 8.44 8.50 5.25 17.00 5.88 Instruction Book IB182012EN March 2017 www.eaton.com...
- Page 6 Table 3. 50DH-VR (50DH-VR-50XU/75ARU Rear Racking Device Shown) Existing Circuit Breaker Rated Continuous Current at 60 Hz Circuit Breaker Type (Amps) 50DH-VR 50XU/75ARU 1200 5.00 31.53 44.00 9.00 26.62 21.81 17.26 8.25 23.50 58.01 Instruction Book IB182012EN March 2017 www.eaton.com...
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Page 7: Section 2: Safe Practices
Connected position. Failure to do so could result in a flash over and possible death, personnel injury or property damage. Circuit breakers are equipped with safety interlocks. Do • not defeat them. This may result in death, bodily injury or equipment damage. Instruction Book IB182012EN March 2017 www.eaton.com... -
Page 8: Section 3: Receiving, Handling, And Storage
File claims immediately with the insert the lifting harness hooks into the circuit breaker side openings carrier if damaged or loss is detected and notify the nearest Eaton’s and secure. Be sure the hooks are firmly attached before lifting the Electrical Services &... -
Page 9: Approximate Weight By Type
Indoor storage should be in a building with sufficient heat and circulation to prevent condensation. If the building is not heated, the same general rule for heat as for outdoor storage should be applied. Instruction Book IB182012EN March 2017 www.eaton.com... - Page 10 Manual Charging Handle Racking Mechanism Arm Push To Close Button Contact Status Indicator Secondary Disconnect Slide Operation Counter Push To Open Button Tow Hitch Racking Access Position Indicator Closing Spring Status Indicator Lock Out Flag Instruction Book IB182012EN March 2017 www.eaton.com...
- Page 11 50DH-VR-50AXU / 50XU / 75U / 75ARU - 600 / 1200A Replacement Circuit Breaker Figure 3.3.b. Rear External View of 50DH-VR (50DH-VR 50AXU-75U Front Racking Shown) Rear External View Primary Disconnect Anti-Rotation Bracket Secondary Disconnect Shutter Roller Ground Contact Instruction Book IB182012EN March 2017 www.eaton.com...
- Page 12 Manual Charging Handle Racking Mechanism Arm Push To Close Button Contact Status Indicator Secondary Disconnect Slide Operation Counter Push To Open Button Tow Hitch Racking Access Position Indicator Closing Spring Status Indicator Lock Out Flag Instruction Book IB182012EN March 2017 www.eaton.com...
- Page 13 50DH-VR-50AXU / 50XU / 75U / 75ARU - 600 / 1200A Replacement Circuit Breaker Figure 3.3.d. Rear External View of 50DH-VR (50DH-VR 50XU-75ARU Rear Racking Shown) Rear External View Shutter Roller Racking Mechanism Arm Ground Contact Primary Disconnect Interlock Linkage Secondary Disconnect Instruction Book IB182012EN March 2017 www.eaton.com...
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Page 14: Section 4: Description And Operation
(20WR Shown) OPERATION 4.1 VCP-TR VACUUM CIRCUIT BREAKER ELEMENT The Eaton type VCP-TR vacuum circuit breaker is a fixed mounted device. It is designed and tested in accordance with ANSI standards C37 .04 and C37 .09. The VCP-TR circuit breaker is a true metal-clad circuit breaker... -
Page 15: Stored Energy Mechanism
“OFF” push-buttons. A factory supplied electrically operated operator in or out of the cell. In addition to the original interlocks, circuit breaker is equipped as standard with a spring release to close VR-Series circuit breakers provide an anti-close interlock. Instruction Book IB182012EN March 2017 www.eaton.com... - Page 16 50DH-VR-50AXU / 50XU / 75U / 75ARU - 600 / 1200A Replacement Circuit Breaker Figure 4.2. Typical AC/DC Schematic Instruction Book IB182012EN March 2017 www.eaton.com...
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Page 17: Racking System Trip And Closing Spring Release Interlocks
The slider is located on the lower left hand area of the circuit breaker frame. Push on the front Instruction Book IB182012EN March 2017 www.eaton.com... -
Page 18: 50Dh-Vr 50Xu / 75Aru - Rear Racking
Also, the secondary disconnect will disengage automatically. The position mode indicator will change from “TEST/OPERATE” to “TRIP-FREE” . Instruction Book IB182012EN March 2017 www.eaton.com... - Page 19 Continued racking will force a trip-free condition leaving the circuit breaker in the open position if the circuit breaker were left closed in the test position. The circuit breaker is in a non-operable state. Instruction Book IB182012EN March 2017 www.eaton.com...
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Page 20: Miscellaneous Items
The ground contact is located at the rear of the circuit breaker near the floor and visible from the back of the circuit breaker when out of the cell. Instruction Book IB182012EN March 2017 www.eaton.com... -
Page 21: Section 5: Inspection & Installation
Verify the information on the new VR-Series nameplate matches the information on the purchase order. If any discrepancies exist, notify 9. See Figure 5.2 for channel modifications for front racking circuit Eaton for resolution prior to proceeding. breakers. 10. After these modifications, the new circuit breaker front cover 5.2 CELL MODIFICATIONS... - Page 22 Replacement Circuit Breaker Figure 5.2. Completed Cell Modification (Front Racking) 7.875 MIDDLE POST SHOWN 7.875 CELL FRONT SHOWING MODIFICATION CUTOUT CUTOUT 8.375 20.88 20.88 CUTOUT CUTOUT (16.75) 25.500 25.500 CELL FLOOR ANGLE 15.750 REF OPENING Instruction Book IB182012EN March 2017 www.eaton.com...
- Page 23 50DH-VR-50AXU / 50XU / 75U / 75ARU - 600 / 1200A Replacement Circuit Breaker Figure 5.3. Detailed Schematic of Cell Modification Instruction Book IB182012EN March 2017 www.eaton.com...
- Page 24 8.875 CUTTING .563 .563 17.875 4.800 MIDDLE 8.938 MIDDLE POST IN POST IN CELL CELL 22.00 CUTOUT DEPTH TOP OF 20.000 CHANNEL TOP OF CHANNEL 1.000 DETAIL SHOWING DETAIL SHOWING HOLE LAYOUT CUT OUT Instruction Book IB182012EN March 2017 www.eaton.com...
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Page 25: Cell Clearance And Shutter Modifications
16. After these modifications, the new circuit breaker front cover will align with the channels on each side to conceal the channel modifications and create the dead front barrier required for metal-clad construction. Instruction Book IB182012EN March 2017 www.eaton.com... -
Page 26: Insertion Procedures
The circuit breaker will be considered in the “CONNECT” position when the position indicator reads “TEST/OPERATE” . This indicates that the trip linkage is released and the circuit breaker is now ready for service. Instruction Book IB182012EN March 2017 www.eaton.com... -
Page 27: 50-Dh-Vr-50 Xu/75Aru (Rear Racking)
Move the circuit breaker out by rotating the racking handle counter-clockwise. The circuit breaker will start coming out of the cell before the secondary disconnect or primary disconnects are disconnected. The circuit breaker will be in a non-operable mode Instruction Book IB182012EN March 2017 www.eaton.com... -
Page 28: Section 6: Inspection & Maintenance
Test 6.8.1 If < 0.6 Contact P.B.C. ™ ™ At 1-877-276-9379 BOLT SIZE 8 - 32 10 - 32 .25 - 20 .31 - 18 .38 - 16 .50 - 13 TORQUE Lb. In. Instruction Book IB182012EN March 2017 www.eaton.com... -
Page 29: Vacuum Interrupter Integrity Test
6.4 for graphical representations of satisfactory and unsatisfactory contact wipe conditions. If the identified wipe indicator is observed DC HI-POTENTIAL TESTS ARE NOT RECOMMENDED BY EATON. DO NOT to be below the top surface of the drive insulator as shown in Figure APPLY DC AT ANY LEVEL TO VR-SERIES POWER CIRCUIT BREAKERS 6.3, the contact wipe is satisfactory. -
Page 30: Insulation
1500 volts RMS. Maintain the voltage for one minute. Successful withstand indicates satisfactory insulation strength of the secondary control circuit. Remove the shooting wire and reconnect the motor leads. Instruction Book IB182012EN March 2017 www.eaton.com... -
Page 31: Primary Circuit Resistance Check
6.10 LUBRICATION All parts that require lubrication have been lubricated during the assembly with molybdenum disulphide grease. Eaton No. 53701QB. No other lubrication in this mechanism is required. For smooth racking operation, lubricate the gears of the racking mechanism with Eaton 53701QB or equivalent. - Page 32 • Control Power (CS/T Switch, remains made) Mechanism • Trip Coil Clapper (Not Resetting) • Trip Bar or Trip Latch (Poor Engagement Of Mating Or Worm Surfaces) • Trip Bar Reset Sprint (Loss Of Torque) Instruction Book IB182012EN March 2017 www.eaton.com...
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Page 33: Section 7: Replacement Parts
Specify the method of shipping desired. c. Send all orders or correspondence to the nearest Eaton sales office or contact the PBC direct at 1-877-276-9379. d. Include negotiation number with order when applicable. - Page 34 Eaton 1000 Eaton Boulevard Cleveland, OH 44122 United States Eaton.com © 2017 Eaton All Rights Reserved Eaton is a registered trademark. Printed in USA Publication No. IB182012EN All trademarks are property March 2017 of their respective owners.
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