Siemens 38-3AH3 38 kV - Manuals

Page 8 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. A A B C D E G F Same components used on: • Type SDV7 distribution circuit breakers • Type GMSG vacuum circuit breakers • Siemens retrofit (replacement) circuit breakers. 3AH35-SE Stored-Energy Operator Key ...

Page 9 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Substation Breaker Maintenance- Tools SAE (U.S. customary): Socket and open-end wrenches: 5/16, 3/8, 7/16, 1/2, 9/16, 11/16, 3/4 and 7/8 inches; 7, 10, 13, 17 and 19 mm Hex keys: 3/16 and 1/4 inches; 8 mm S...

Page 10 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Substation Breaker Maintenance Maintenance Tasks

Page 17 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. 3AH35-SE Stored-Energy Operator Mechanism Lubrication Points

Page 19 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Magnetic-actuator Operator Operator Maintenance Differences •After control power has been removed, discharge stored energy from the capacitors • Perform the capacitor charging check • When the capacitors a...

Page 21 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Type 3AH35-MA Magnetic-actuator Operato r Capacitors  Capacitors have a life expectancy of 45 years with an ambient environment at the capacitors of:  70 ° C (3% of total hours)  50 ° C (40% of total ho...

Page 22 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Electronic Controller Monitoring And Self-test Functions  Failure to close on command (after 100 ms)  Excessive coil current  Initial charging of capacitors on energization  Periodic charging test cycl...

Page 28 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Electronic Controller LED Indicator Status  Green LED on power supply illuminated (visible with operator cover removed) indicates control power is available LEDs on front panel:  Green LED (adjacent to p...

Page 29 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Type SDV7-MA Distribution Circuit Breaker External Manual Trip Handle  Requires only a modest force to operate  Once the circuit breaker is opened, the handle can be padlocked to provide a lockout functi...

Page 33 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Metal-Clad Substation Switchgear  Meets ANSI/NEMA definition for metal-clad switchgear  Arc-resistant version available  Uses vacuum circuit breakers with globally common operator – 3AH3

Page 34 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Cubicle Structure 1200 and 2000 A Circuit Breakers Surge Arresters Ground Sensor CT Outgoing Cable Lugs (Downfeed Shown) Main Bus Bars Removable Barrier Power Cable Duct Current Transformers 2 Per Bushing ...

Page 36 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Metal-Clad Substation Switchgear Circuit Breaker Cell Floor  Angled guide rails align circuit breaker with cubicle (funnel action)  Circuit breaker release latch positively secures circuit breaker  Rack...

Page 37 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Universal Circuit Breakers Key Rating  Rating interlock permits higher rated GM-SG circuit breaker to enter a lower rated cell but not vice-versa

Page 38 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Metal-Clad Substation Switchgear Primary Contact Finger Cluster  1” uniform gap between fingers for all ratings enables “universal spare” concept

Page 40 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Metal-Clad Substation Switchgear Low Voltage Control Compartment  Available for power and auxiliary devices  Entry/exit for intercompartment wiring

Page 41 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Metal-Clad Substation Switchgear Control Transformers Available  Two current transformers per primary stab  Voltage transformers available in several configurations – all roll out on drawers and self- gr...

Page 43 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Metal-Clad Substation Switchgear Optional Accessories  Test cabinet (in lieu of split plug jumper)  Electric or manual ground and test devices  Electrical remote racking motor accessory reduces arc-flas...

Page 45 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Metal-Clad Substation Switchgear GM-SG Circuit Breaker 1 2 3 7 8 6 5 4 1 Push-to-close button 2 Push-to-trip button 3 Racking release handle 4 Operations counter 5 CLOSED/OPEN indicator 6 Spring charged/di...

Page 46 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Metal-Clad Substation Switchgear Circuit Breaker Poles  Contact pressure springs to withstand close & latch forces  Epoxy standoff insulators for pole supports  Epoxy tension struts to withstand clo...

Page 48 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. 3 Metal-Clad Substation Switchgear Mechanism Family Mean Time Between Failures Vacuum Circuit Breaker 3A MTBF (mean time between failures) 8,700 years Vacuum Interrupter VS MTTF (mean time to failure) 42,5...

Page 53 IC1000-F320-A189-X-4A00 © Siemens Industry, Inc. 2013 All rights reserved. LMV MS U.S. Contact Information Tommy Rennard Customer Service Manager Siemens Industry, Inc. / I&C / NAM / Medium Voltage and Systems 7000 Siemens Rd Wendell, NC 27591 Phone: +1 (919)-365-2858 E-mail: [email prot...