The newest addition to the AMR PEMCO ground check monitoring line is the GM-105-XLD, “Extra Long Distance,” impedance monitor. With an advanced 125 mA loop current, the XLD allows monitoring of cable lengths of up to 6.5km (4 miles).* The higher current loop provides more tolerance to connections or inline couplers, which can cause an increase in the resistance of the pilot circuit.
In addition to ground check monitoring, the GM-105-XLD includes ground-fault monitoring for resistance-grounded systems. It continuously monitors the integrity of the ground wire to protect portable equipment from hazardous voltages caused by ground faults.
* Distance may vary based on cable construction and manufacturer.