The Bramco Electronics Earth Continuity Relay, Model LI – D, has been designed to monitor the conti-nuity of the Earth Circuit in a supply cable by ground-ing the pilot core via a diode, polarized positive to earth.

Calibrated on a higher resistance this relay can cover longer distances and is often used on Intrinsic Safe conveyor systems detecting open or short cir-cuits on a two wire pullkey system.

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