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Specific Troubleshooting Guide for Blocking and Test System
This troubleshooting guide provides solutions for common issues encountered with the Bently Nevada A7 Blocking and Test System.
Common Issues and Solutions
Issue: Relay does not operate as expected
Possible Causes:
- CTs not properly connected
- Trip circuits not opened
- Faulty test plugs
Recommended Solutions:
- Verify CT connections and ensure they are shorted correctly
- Ensure trip and auxiliary circuits are opened before testing
- Inspect and replace faulty test plugs
Issue: High voltage present at open CTs
Possible Causes:
- CTs not shorted when switches are open
- Incorrect wiring configuration
Recommended Solutions:
- Ensure CTs are connected to the shorted side of the switch
- Review wiring configuration and correct as necessary
Advanced Diagnostic Notes
For advanced diagnostics, utilize a secondary injection test set to verify the functionality of the relay and the integrity of the connections.
For unresolved issues, consult the full manual or contact support.
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Last updated: June 19, 2025 | Author: Senior Industrial Automation Engineer…
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