BATTERY GROUND MONITOR (BGM-500)
THE BTECH GROUND FAULT MONITOR DETECTS DANGEROUS BATTERY TO GROUND FAULTS. WHETHER THE FAULT IS FROM A LEAKING BATTERY OR INADVERTENT BUS CONNECTION TO THE BATTERY RACK, THE BGM-500 DETECTS THE FAULT AND REPORTS AN ALARM.
Battery systems are not electrically connected to the cabinets or racks supporting them. The cabinets and rack are connected to Earth ground, if current is present on the ground cable then a ground fault exists. BTECH’s system utilizes a precise, specialized custom current transducer to detect current leakage. The ground wire runs through the Current Transducer (CT), which is connected to the BGM-500, and the system continuously measures current flowing to ground. If the BGM-500 detects current above a configurable threshold value, it indicates a ground fault alarm. Depending on the alarm behavior configuration, the alarm either latches until cleared manually or clears when alarm conditions are corrected and ground current returns below alarm threshold value. Ground fault alarms can be triggered by positive or negative current, so the CT direction doesn’t affect the functionality of the BGM-500.