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.
COMPUTER TO RELAY CONNECTION
Connect the SE-135 to the network using a standard Ethernet patch cable. Use of a crossover cable to connect the SE-135 directly to the computer running SE-MON-GFGC is not recommended. A typical router will assign an IP address to all connected computers that are using DHCP. The SE-135 does not support the use of DHCP. If the SE-135 is being set-up for first time, it is recommended to only have one SE-135 connected to the network to prevent communication errors.
Adjustable pickup (0.5-12.5 A)
Adjustable time delay (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