Related Manuals for Siemens GER
Summary of Contents for Siemens GER
- Page 1 Vacuum Circuit Breakers (Vehicle) Instructions Installation Type GER Operation 5kV to 15kV Maintenance SGIM-9978B...
- 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
Introduction and Safety Introduction Signal Words The GER family of vacuum circuit breakers is designed to The signal words “Danger”, “Warning” and “Caution” meet all the applicable ANSI, NEMA and IEEE standards. used in this manual indicate the degree of hazard that may Successful application and operation of this equipment de- be encountered by the user. -
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 ship- be completely covered and protected from rain, snow, dirt ment damage. -
Page 6: Vehicle Description
There is no spring dump provides safety to both personnel and equipment during linkage located on the left side of the type GER circuit the racking procedure, as it prevents the electrical or breaker and manual tripping of the circuit breaker prior to... -
Page 7: Circuit Breaker In Disconnect/Test Position (Refer To Figure 4)
Note: Figures 1, 2, and 3 pictorially represent a 5kV-350MVA charging are not engaged, as is indicated by the location type GER circuit breaker. While the associated parts of pawl roller, latching pawl, pawl and pawl roller. Note required to perform the trip-free/spring dump function vary... -
Page 8: Trip-Free In Racking Procedure (Refer To Figure 2)
Vehicle Description downward displacement of the trip actuator and As shown in the enlarged view of the circuit breaker elevation of the lever linkage arrangement, which in turn operator, the displacement of the trip-free roller results in will lift the interlock levers and elevate the trip-free the downward displacement of the trip actuator which in pushrod. -
Page 9: Circuit Breaker In Connect Position (Refer To Figure 3)
Vehicle Description 3. Attempt to manually charge the closing spring. The The enlarged view of the operating mechanism shows the circuit breaker operator closed with springs charged. Note closing spring should extend as expected, but fail to latch in the extended position due to the displacement that all items displaced during the racking procedure have of the close latch lever. -
Page 10: Adjustment Procedure - Trip-Free/Spring Dump
After successful operation of the circuit breaker, it is and adjusted, no adjustment to the trip-free/spring dump important to verify trip-free/spring dump operation when interlock on the type GER circuit breaker should be racking the circuit breaker from Connect to the Disconnect/ necessary. -
Page 11: Moc Actuator (Refer To Figure 4)
1. Trip-free roller: Siemens recommends replacement of the original GE 52STA with a Siemens 52STA (5kV, 250MVA — P/N 18-669- If the trip-free roller does not fit in the upper or lower 255-502 and for all other ratings — P/N 18-669-255-501.) -
Page 12: Maintenance
Purchaser’s purposes, the mat- Regardless of the length of the maintenance and lubrica- ter should be referred to the local Siemens sales office. tion interval, Siemens recommends that circuit breakers and switchgear should be inspected and exercised annu- ally. -
Page 13: Checks Of The Primary Power Path
Operator / Manual SGIM-9918 (3AH) or SG-3398 (3AF).) Cleanliness Check Figure 6 is a side view of the GER Circuit Breaker with the 5. Remove the circuit breaker from the switchgear. Refer to the preceding installation section of this manual for... -
Page 14: Primary Disconnects
Maintenance All of these components must be clean and free of dirt or primary copper bars for tightness and absence of mechani- foreign objects. Use a dry lint-free cloth. For stubborn dirt, cal damage, burning, or pitting. use a clean cloth saturated with denatured alcohol (except Using a clean cloth saturated with denatured alcohol, clean for the vacuum interrupters). - Page 15 Maintenance Table 2. Periodic Maintenance and Lubrication Tasks Item Inspect For Lubrication Interval Sub-Assembly 10 years Primary Power Path Primary Studs/Disconnects 1. Lubrication of contact surfaces. 100 racking operations 2. Tightness of nuts (torque 1/2” Grade 5 bus hardware to 50 ft-lbs) and other locking devices. Electrical Controls Wiring 1.
- Page 16 Siemens Power Transmission & Distribution, Inc. P.O. Box 29503 Raleigh, NC 27626-0503 SGIM-9978B (12 - 2003) Printed in U.S.A. © 2001 Siemens Power Transmission & Distribution, Inc. SIEMENS is a registered trademark of Siemens AG.