Siemens
38-3AH3 38 kV
instruction manual
Appendix
Permissible tripping delay Y
Wiring and terminals check
Maintenance
Current-path assembly
Handling procedure
Phase barriers
Setting
Cleanliness check
Replacement at overhaul
Auxiliary switch
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Appendix
Table 14: Remarks (continued)
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Contents
Answers for energy
Qualified person
Table of contents
Introduction
Signal words Hazardous Procedures
Introduction
Introduction
Field service operation and warranty issues
Receiving, handling and storage
Introduction Receiving procedure
Shipping damage claims
Receiving, handling and storage
Handling procedure
Space heating
Storage procedure
Indoor storage
Outdoor storage
Inspections, checks and tests without control power
Installation checks and functional tests
De-energizing control power in switchgear
Installation checks and functional tests
Type 38-3AH3 vacuum circuit breaker racking
Racking crank engagement procedure
Manual-spring charging check
Physical inspections
Split-plug jumper connected to circuit breaker
Final mechanical inspections without control power
Vacuum interrupter/ operator
Vacuum interrupters
Vacuum interrupter/ operator
Primary disconnects
Phase barriers
Stored-energy operating mechanism
Construction
Interrupter/operator module
Vacuum interrupter
Current-path assembly
Switching operation
Circuit-breaker pole
Type 38-3AH3 vacuum circuit breaker pole section
Stored-energy operating mechanism
Indirect releases tripping coils
Auxiliary switch
Mode of operation
Operating mechanism
Use of manual-spring operation crank
Closing
Manual operation
Trip-free functionality
Opening
Rapid auto-reclosing
62.2 62.5.2 50.3.1 53.0
Pawl roller 62.5.2 Close-latch pawl
Vacuum interrupter/ operator
Discharged
Closing
Standard
54.2
Indirect releases dual-trip or
Undervoltage optional
Secondary shunt release optional
Position a locked
Shock absorber
Capacitor-trip device
Secondary disconnect
Truck-operated cell TOC switch
Mechanism-operated cell MOC switch optional
Shutter-operating linkage Secondary disconnect Shutters
Ground disconnect
Trip-free interlock
Rating interlock
Circuit-breaker frame
Interlocks Circuit breaker racking-interlocks
Racking mechanism
Vehicle function and operational interlocks
Alignment
Racking interlocks Closed circuit breaker interlock
Automatic closing-spring energy release
Trip-free interlock position mechanical interlock
Introduction and maintenance intervals
Maintenance
Recommended hand tools
Maintenance
Inspection items and tests
Recommended maintenance and lubrication
Checks of the primary power path
Removal from switchgear
Cleanliness check
Checks of the stored-energy operator mechanism
Maintenance and lubrication
Circuit Number
Inspection of primary disconnects
Typical for all three-phases
Manual-spring charging and contact- erosion checks
Fastener check
Secondary-disconnect check
Wiring and terminals check
Automatic spring-charging check control power required
Electrical-control checks
Typical vacuum interrupter contact curve
Vacuum-interrupter mechanical check
Spring-charging motor checks
High-potential tests
Vacuum-integrity check using dielectric test
High-potential test voltages
Voltage Frequency withstand
Field-test voltage
Functional tests
Inspection and cleaning of circuit- breaker insulation
Continuous Contact
Rating a
Circuit breaker Number Type
Replacement at overhaul
Overhaul
Circuit-breaker overhaul
Overhaul
Vacuum interrupter replacement
Setting
Vacuum interrupter replacement illustration
Overhaul
Hydraulic shock absorber
Checking the contact stroke Open the circuit breaker
Sub-assembly Inspect for
Maintenance and troubleshooting
Problem Symptoms Possible causes and remedies
Maintenance and troubleshooting
Closed
Appendix
Appendix
Voltage levels Lightning-impulse BIL
Permissible tripping delay Y
Maximum design voltage
Values Voltage Voltage range factor K3 Insulation Withstand
Short-circuit at rated maximum design voltage I5, 6
Rated Maximum design voltage
Levels Voltage levels Lightning-impulse BIL
Rated Continuous4
Remarks
Appendix
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