Siemens 3AH Anleitung Handbuch - Seite 3
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Vacuum Circuit Breaker Operator Module
Table of Contents
Table of Contents
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Table of Illustrations
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Introduction ............................................................................... 3
Qualified Person ........................................................................ 3
Signal Words ............................................................................. 3
Dangerous Procedures .............................................................. 3
Field Service Operation ............................................................. 3
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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
Introduction ............................................................................... 6
Vacuum Interrupters ................................................................. 7
Phase Barriers ......................................................................... .7
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
( 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
(Figures 11. 12 and 13) ....................................................... 17
Capacitor Trip Device ............................................................... 18
Shock Absorber ..................................................................... ..18
Spring Charging Motor ( 8 8) .................................................. ..18
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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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( C ontrol Power Required) ...................................................... 25
Checks of the Spring Charging Motor ( 8 8) ............................... 25
Vacuum Interrupters ................................................................. 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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Introduction .............................................................................. 28
Circuit Breaker Overhaul .......................................................... 28
Replacement at Overhaul ........................................................ 28
Replacement of Vacuum Interrupters ...................................... 28
Hydraulic Shock Absorber ........................................................ 31
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