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Earth Leakage Monitor

Earth Leakage Monitor

Unexpected breakdowns in the electricity supply produce very high economic losses. Monitoring and signaling of earth faults is essential in these situations. HBL’s ELM in DC power systems enables quick detection of earth faults to prompt for corrective action. It works on the principle of residual or differential magnetising current induced in a current transformer. ELM is used in DC power systems like battery chargers, AC-DC converter systems, DC-DC converter systems and DCDBs. It provides the customer an ability to install immunized earth leakage protection systems in their installations. 


  • Protection of DC power supply systems and wiring with local and remote alarm/annunciation.
  • Uniquely monitors outgoing feeders.
  • Reliable.
  • Short-circuit protection.
  • Low power consumption.
  • Easy installation.
  • Efficient performance.
  • Compact model.
  • Useful where independent DC power source is installed.
  • Local and remote (PFC) annunciation. 


  • Oil & Gas.
  • Power utilities.

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