Ground-Fault Relay Checklist
Find products to help limit damage and downtime from ground faults in grounded and ungrounded systems, including those with VFDs and trailing cables.
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The SE-134C/SE-135 is a microprocessor-based, combination ground-wire monitor and ground-fault relay for resistance-grounded or solidly grounded systems. It continuously monitors the integrity of the ground conductor to protect portable equipment from hazardous voltages caused by ground faults. The SE-134C/SE-135 is field proven in monitoring trailing cables on large mobile equipment such as drag-lines, mining shovels, shore-to-ship power cables, dock-side cranes, stacker-reclaimers, submersible pumps, and portable conveyors.
- Adjustable pickup (0.5-12.5 A for SE-CS10) (2 - 50 A for SE-CS40)
- Adjustable time delay (0.1-2.5 s)
- Output contacts
- Ground-check LED indication
- CT-loop monitoring
- High-induced-ac rejection
- DFT (Harmonic) filter
- Zener-characteristic termination assembly
- Fail-safe circuits
- Conformal coating
- Unit can be used on a wide variety of trailing cable applications
- Adjustable trip delay for quick protection and system coordination
- Separate annunciation of ground-fault and groundcheck faults
- Indication of open or short ground-check wire makes it easier to find faults
- Alarms when CT is not connected
- Makes unit suitable for applications with high voltages and long cables
- Prevents false operation
- Provides reliable ground-check loop verification
- Ensures ground-check and ground-fault circuits remain safe even in the event of equipment failure
- Additional coating protects circuit boards against harsh environment
SE-134C Parts
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