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. 

Our Battery monitoring system ensures the optimal usage of energy inside the battery powering the product. It smartly operates by preventing costly downtime due to unexpected battery failures. Traditional estimates, with proper management system can make battery life reach the level of design expectations.

Thyristor Battery Charger

Thyristor based battery charger uses Thyristor switching principle for achieving the desired DC output. It basically consists of a transformer, a semi-conductor bridge rectifier, a filter circuit and a control circuit.

The AC mains voltage is transformed to a suitable level and fed to the rectifier bridge. After being smoothened by the filter circuit, it rectifies the AC input and feeds controlled DC output to the battery and load. The power output requirement is adjusted by using phase control technique which is provided by the control circuit. The feedback signals from the output to the control circuit are used for maintaining voltage regulation and current limit.