Table Of Contents - Siemens 3AH Series Instructions Manual

Vacuum Circuit Breaker Operator Module

Table of Contents

Table of Contents
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Table of Illustrations
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Introduction and Safety
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Introduction ............................................................................... 3
Qualified Person ........................................................................ 3
Signal Words ............................................................................. 3
Dangerous Procedures .............................................................. 3
Field Service Operation ............................................................. 3
Receiving, Handling and Storage ....................... ......................................................
Introduction .
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Receiving Procedure
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Storage Procedure .
Installation Checks and Initial Functional Tests
Introduction ............................................................................... 5
Inspections. Checks andTests without Control Power ............. 5
As-Found and Vacuum Check Tests ........................................... 5
Automatic Spring Charging Check ............................................ 5
Final Mechanical Inspections without Control Power ............... 5
Vacuum Interrupter/Operator Description
Introduction ............................................................................... 6
Vacuum Interrupters ................................................................. 7
Phase Barriers ......................................................................... .7
Stored Energy Operating Mechanism
Vacuum Interrupter/Operator Module .
Construction (Figures 1. 2. 5. 6a,and 6b) .................................. 8
Circuit Breaker Pole (Figure 5) .................................................. 8
Current-Path Assembly (Figure 5) ............................................ 8
Vacuum Interrupter ( F igure 5) .................................................. 8
Switching Operation ( F igure 5 and 6a) .................................... 8
Operating Mechanism ............................................................. 8
Construction ........................................................................... 11
Motor Operating Mechanism ( F igure 6a) ................................ 11
Mode of Operation .................................................................. 11
. 6a: · 6 b . and . 7a · � · 7 Cii · ·
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Trip Free Operation (Figures 6a and 6b) .................................. 11
Opening ( F 1gure 6a) ................................................................ 11
Rapid Auto-Reclosing ............................................................ ..15
Manual Operation ................................................................... 15
Manually Charging the Closing Spring (Figures 9a and 9b) .... 15
Manual Closing (F1gure 6a) ..................................................... 15
Manual Opening ( F igure 6a) .................................................... 15
Close coil (52SRC) ................................................................. ..17
Trip coil ( 5 2T) ......................................................................... ..17
Indirect Releases ( S econdary Shunt Release
( D ual Trip) ( 5 2T 1) or Undervoltage (27)) .............................. 17
Secondary Shunt Release ( 5 2T 1) (Figure 11) ......................... 17
Undervoltage Release ( 2 7) (Figures 10 and 11) ..................... 17
Construction and Mode of Operation of Secondary Shunt
Release and Undervoltage Release
(Figures 11. 12 and 13) ....................................................... 17
Capacitor Trip Device ............................................................... 18
Shock Absorber ..................................................................... ..18
Spring Charging Motor ( 8 8) .................................................. ..18
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Maintenance
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Introduction and Maintenance Intervals .................................. 19
Recommended HandTools ....................................................... 19
Recommended Maintenance and Lubrication ......................... 19
Checks of the Primary Power Path ........................................... 20
Cleanliness Check .................................................................... 20
Inspection of Flexible Connectors ............................................ 20
Checks of the Stored Energy Operator Mechanism ................ 20
Maintenance and Lubrication .................................................. 20
Fastener Check ......................................................................... 22
Manual Spring Charging and Contact Erosion Checks ............ 22
Electrical Control Checks .......................................................... 23
Check of the Wirin and Terminals ........................................... 23
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Electrical Close and Trip Check
( C ontrol Power Required) ...................................................... 25
Checks of the Spring Charging Motor ( 8 8) ............................... 25
Vacuum Interrupters ................................................................. 25
Vacuum Integrity Check ( u sing Mechanical Test) (Figure 18) .... 25
High-Potential Tests .................................................................. 25
Vacuum Integrity Check (using Dielectric Test) ......................... 25
High Potential Test Voltages ..................................................... 25
Vacuum Integrity Test Procedure .............................................. 26
As-Found Insulation and Contact Resistance Tests ................. 26
Insulation and Contact Resistance Test Equipment ................. 26
Insulation and Contact Resistance Test Procedure .................. 27
Inspection and Cleaning of Circuit Breaker Insulation ............. 27
Functional Tests ........................................................................ 27
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Overhaul
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Introduction .............................................................................. 28
Circuit Breaker Overhaul .......................................................... 28
Replacement at Overhaul ........................................................ 28
Replacement of Vacuum Interrupters ...................................... 28
Hydraulic Shock Absorber ........................................................ 31
Maintenance and Troubleshooting
Appendix
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