| Specification | Details |
|---|---|
| Monitoring Range | 24V – 360V DC systems |
| Cell Voltage Accuracy | ±0.05%, resolution 1 mV |
| Internal Resistance | 0.1–64 mΩ, resolution 1 µΩ, ±2% accuracy |
| String Voltage | Up to 2500V DC, resolution 10 mV, ±0.1% accuracy |
| Current Monitoring | Up to 500A, resolution 10 mA, ±1% accuracy |
| Temperature | –10°C to +100°C, resolution 0.1°C, ±2% accuracy |
| Humidity | 5–90% RH, resolution 1%, ±5% accuracy |
| SOC / SOH Estimation | SOH 0–100%, resolution 1%, ±5% accuracy |
| Communication | RS-485 Modbus RTU, Ethernet (TCP/IP), optional Wi-Fi/GPRS |
| Protections | Internal fuses, reverse polarity protection |
| Operating Conditions | –10°C to +70°C, 5–90% RH, 80–110 kPa pressure |
| Enclosure | ABS/metal, modular power design |
Early Detection, Maximum Protection
Earth faults are silent threats that compromise both safety and uptime. Chhabi’s ELMS identifies insulation degradation at an early stage, enabling operators to take preventive action before minor leaks escalate into major hazards
Identifies positive and negative ground faults with sensitivity down to 50mA (100mA optional).
Simultaneously supervises up to 8 independent feeders.
Seven-segment LED displays per feeder, with positive/negative indicators.
Modbus RTU/TCP options for SCADA/BMS connectivity.
Includes scan-and-hold function with configurable scan time
Reliable DC power for control, protection, and backup across thermal, nuclear, hydro, renewable plants, and utility operations.
An Earth Leakage Monitoring System continuously checks DC circuits for insulation faults and ground leakage — the kind that develop silently over time and are invisible to standard protection devices. In industrial plants, catching these early is the difference between a scheduled maintenance fix and an unplanned shutdown or safety incident.
A DC earth leakage detector is specifically designed for ungrounded DC systems — the type used in substations, battery banks, and control circuits. Standard AC residual current devices don't work on DC systems, which is why a dedicated DC earth leakage detector is essential for these applications.
Detection sensitivity goes down to 50mA, with a 100mA option available — precise enough to catch early-stage insulation degradation before it develops into a full ground fault. At that sensitivity level, you're dealing with a maintenance issue, not an emergency.
Up to 8 independent feeders simultaneously, each with its own seven-segment LED display showing positive and negative ground fault status. For larger installations with multiple DC distribution feeders, this multi-channel capability covers the full panel without needing separate devices per circuit.
Yes, Modbus RTU and TCP/IP communication options allow direct integration with SCADA, BMS, or plant control systems. This means earth leakage data and fault alerts can be pulled into the same monitoring dashboard the operations team is already using.
It covers 24V to 360V DC systems, which spans the full range of typical substation control, battery bank, and industrial DC distribution voltages. Most standard industrial applications fall comfortably within this range without needing custom configuration.
In a substation, the DC system powers protection relays and tripping coils, a ground fault here doesn't just create a safety risk, it can compromise the entire protection scheme. Chhabi Electricals' ELMS gives operators early warning so the fault is isolated before it affects critical control functions.
Power generation plants, oil & gas facilities, substations, data centers, railways, and heavy industries like cement and steel — anywhere ungrounded DC systems run critical control, protection, or communication circuits that need continuous insulation supervision.
Chhabi Electricals' Earth Leakage Monitoring System identifies insulation degradation at an early stage, before a minor fault escalates into a trip, equipment damage, or a safety hazard. For critical facilities where unplanned downtime carries serious operational and financial consequences, that early warning capability is what the system is built for.
Yes, that's one of the key advantages of Chhabi Electricals' ELMS over basic ground fault indicators. The system separately identifies positive and negative ground faults, which directly helps the maintenance team locate which part of the DC circuit has the insulation breakdown and speeds up fault isolation significantly.
