Bus Current Monitoring

Bus-Level Hall/Shunt Current Sensors with Over-Current Trip

Bus current monitoring assemblies employ Hall-effect sensors on high-current mains and copper-nickel shunts across distribution branches to protect lunar power networks from fault currents and load anomalies. Across 30 sense points, dedicated hardware comparators execute over-current trips within 1 millisecond and provide differential ground-fault detection down to 50 milliamperes to identify insulation faults. Because the lunar surface lacks magnetospheric radiation shielding, these 3-kilogram units utilize radiation-tolerant amplifiers and analog-to-digital converters to maintain measurement calibration over a 25-year operational lifetime and a 300,000-hour mean time between failures while drawing 3 watts.

Bus-level current sensors with hardware over-current trip outputs protecting against fault currents and load anomalies.