Signal & Communications
EarthSense
EarthSense Insulation Monitor
Continuously monitor insulation on unearthed electrical systems and detect leakage between AC or DC busbars and earth. Adjustable warnings help maintenance teams identify insulation faults early.
Capabilities
- Compact DIN-rail mounting with a sunlight-readable graphic LCD
- One monitoring channel for an AC or DC busbar
- RS-485 communication for remote monitoring and testing
- Automatic self-test at startup and every 24 hours, plus push-button testing
- Two SPST relay outputs
- Choose the supply version to match the power source; supply voltage is separate from the monitored busbar voltage
Technical details
| AC supply model | ESM1-A · 85–264 V AC |
|---|---|
| DC supply model | ESM1-B · 9.6–96 V DC |
| Monitored busbar voltage | Up to 650 V AC or DC |
| Alarm response settings | 1–200 kΩ |
| Communication | RS-485; no Ethernet interface |
| Dimensions (W × H × D) | 36 × 90 × 60 mm |
| Weight | 0.250 kg |
| Operating temperature | −25 to 70 °C |
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