SM100 On-Line Switchgear

Condition Monitoring

The On-Line Switchgear Condition Monitoring System (SM100) is an essential substation preventative maintenance tool and aid for power utilities with ever increasing demands for more reliable low cost energy.
Possible on-line test results which can be computed per phase for each breaker operation include:

Feature Extraction

• Peak Coil Current
• Coil Current Pulse Length
• Mechanism Time
• Arc Duration Time
• Pre Latch Period
• Latch Transition
• Trip Latch Release

Coil Current Fingerprint Comparison / Grey Zone Checking

•  Accumulated Contact Wear (InT)
• Accumulated Contact Operation Count
• Estimated Main Contact Operated Time
• Mechanism Motion
• Battery Voltage

In addition the SM100 can optionally perform a Off-Line timing test on the main contacts. 

This system is the first step towards ‘on-time maintenance’ that should be supported with Off-Line dynamic micro-ohm testing / timing, to gain more in-depth knowledge and experience.