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Related Manuals for Siemens DPU Series
Summary of Contents for Siemens DPU Series
- Page 1 Vacuum Circuit Breakers (Vehicle) Instructions Installation Type DPR/DPU* Operation 4.16kV to 15kV Maintenance SGIM-9908F *"U" in DPU defines an upgrade in MVA or amperage rating from the original. See rating label to determine what has been uprated.
- Page 2 It does not relieve the user of responsibility to use sound practices in application, installation, operation, and mainte- nance of the equipment purchased. Siemens reserves the right to make changes in the specifications shown herein or to make improvements at any time without notice or obligations.
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Page 3: Table Of Contents
Vacuum Circuit Breakers (Vehicle) Table of Contents Introduction and Safety ..............2 Introduction ................... 2 Qualified Person ................2 Signal Words ................2 Dangerous Procedures ..............2 Field Service Operation ..............2 Receiving, Handling and Storage ..........3 Introduction ................... 3 Receiving Procedure .............. -
Page 4: Introduction And Safety
• Training in the proper care and use of protective equip- tems. Contact regional service centers, sales offices or ment such as rubber gloves, hard hat, safety glasses, the factory for details, or telephone Siemens Field Service face shields, flash clothing, etc., in accordance with es- at 1-800-241-4453. -
Page 5: Receiving, Handling And Storage
Outdoor Storage - Outdoor storage is not recommended. When no other option is available, the circuit breaker must 3. Notify the Siemens Sales office immediately of any be completely covered and protected from rain, snow, dirt shipment damage. -
Page 6: Vehicle Description
Vehicle Description The basic operation is for the nut to turn onto the screw Vehicle Function and Operational Interlocks which is mounted on the rear wall of the cubicle. Since Type DPR circuit breakers are comprised of the interrupter/ the nut is securely fastened to the chassis, it pulls the cir- operator module fitted to a vehicle. -
Page 7: Floor Interlock And Operating Lever
Vehicle Description Floor Interlock and Operating Lever The circuit breaker interlocking system prevents closing the circuit breaker while the circuit breaker is being le- vered into or out of the CONNECTED position. This is done by the Floor Interlock and the Automatic Trip- ping Lever (Figure 2). -
Page 8: Automatic Floor Tripping And Closing Spring Release
Vehicle Description Automatic Floor Tripping and Closing Spring Release The closing spring, if charged, will automatically discharge when the circuit breaker is withdrawn from the switchgear. The Floor Interlock and Automatic Tripping Lever activates the tripping trigger as the circuit breaker is withdrawn from the cubicle Test position. -
Page 9: Maintenance
Purchaser’s purposes, the mat- ter should be referred to the local Siemens sales office. Regardless of the length of the maintenance and lubrica- tion interval, Siemens recommends that circuit breakers and switchgear should be inspected and exercised annu- ally. -
Page 10: Circuit Breaker Operator Tasks
Maintenance 2. The second step in the removal procedure is to de-en- ergize control power to the circuit breaker. Open the control power disconnect device. 3. Rack the circuit breaker to the “DISCONNECT” position. 4. Perform the spring discharge check. This is done by first pressing the red Trip pushbutton. -
Page 11: Insulation And Contact Resistance Test
Maintenance Insulation and Contact Resistance Test Racking Mechanism Refer to Circuit Breaker Operator Manual E50001- Remove existing lubricant from racking mechanism. Ap- F710-A251-V3-4A00. ply Klueber Isoflex Topas L 32 lubrication (part # 3AX11333H.) to the slid- ing, rotating and articulating Note: Maximum Contact Resistance is read from surfaces. -
Page 12: Cubicle Moc Forces
Maintenance Cubicle MOC Forces Reference Table 2 for the nominal and maximum forces required to operate the cubicle MOC’s. The force measure- ment is made by operating the cubicle pantograph. The force is measured when operating the pantograph at the location corresponding to the MOC actuator pin interface with the pantograph when the circuit breaker is in the Connect position. -
Page 13: Floor Interlock And Operating Lever Adjusting Instructions
Maintenance Floor Interlock and Operating Lever Adjusting Instructions The circuit breaker must be open and discharged prior to removing any covers. Tools required: • 1/2 inch wrench or socket (5DPR only) • Midsize flat tip screwdriver • 7/16 inch wrench or socket •... - Page 14 Maintenance With the circuit breaker closing spring discharge roller (large roller) displaced 0.19 inches above the floor using the adjustment tool, the roller should have some resistance to rotation but must be able to be rotated manually. Note: This is an initial setting and may be changed per these instructions.
- Page 15 Maintenance Step 6 Verify that the actuating push rod fully rests to its original position by observing the grease wipe on the actuating push rod at the eyebolt. (Push rod shown with the circuit breaker rolled off the adjustment tool.) No grease wipe should be shown! This confirms that the rod is at its reset position.
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Page 16: Functional Tests
Maintenance Step 7 Roll the circuit breaker trip roller (smaller roller located towards the outer edge of the circuit breaker) onto the 0.70 inch step of the adjustment tool. Step 8 Charge circuit breaker closing spring until it is latched and closing spring indicator reads CHARGED. - Page 18 Siemens Industry, Inc. 7000 Siemens Road Wendell, NC 27591 SGIM-9908F (10-2020) Printed in U.S.A. © 2020 Siemens Industry, Inc.