Why Monitor Your Electrical Panels Remotely?
A faulty electrical cabinet—tripped circuit breaker, overload, insulation failure—can cause a production shutdown, a fire, or a critical power outage. Without remote monitoring, detection is delayed: an operator notices the failure while walking past the cabinet, or a piece of equipment shuts down and an alert is sent up from the field.
Remote electrical cabinet monitoring allows you to:
- Detect a fault in seconds via an automatic alert.
- View power consumption, power factor, and harmonics in real time.
- Anticipate overloads before the circuit breaker trips.
- Analyze power quality (voltage sags, overvoltages, phase imbalance).
- Reduce the need for on-site audits and energy meter readings.
- Demonstrate energy compliance (Tertiary Sector Decree, ISO 50001).
Electrical Cabinet Monitoring Architecture
Variables to Monitor in an Electrical Cabinet
| Variable | Source Equipment | Recommended Alert |
|---|---|---|
| Active Power (W, kW) | Power Meter | > 90% of contracted power |
| Energy (kWh) | Meter or analyzer | Monthly threshold exceeded |
| Voltage per phase (V) | Analyzer | Outside range 207–253 V (±10%) |
| Current per phase (A) | Analyzer | > 100% of rated current |
| Power factor (cosφ) | Analyzer | < 0.9 (contractual penalties) |
| Harmonics (THD) | Analyzer | Voltage THD > 8% |
| Residual current (mA) | RCD / Differential | > threshold (insulation fault) |
| Circuit breaker status | Communicating circuit breaker | Tripped / Open |
| Cabinet temperature (°C) | Sensor | > 40 °C (risk of overheating) |
Modbus-Compatible Network Analyzers
The most common analyzers used in industry and construction:
Schneider Electric
- PM500, PM800, PM8000 — high-precision power analyzers.
- iEM3000 — three-phase Modbus RTU rate meter.
Carlo Gavazzi
- EM340, EM530 — DIN-rail energy analyzers.
- WM30 — three-phase energy meter.
Socomec
- Diris A40, A60 — analyzers with current inputs, native Modbus RTU.
Chint / Huawei
- DTSU666 — bidirectional meter for photovoltaic systems.
All of these devices are Modbus RTU (RS-485) compatible and can be read directly by the Eziwan gateway.
Use Case: Solar Farm Monitoring
A solar farm with 10 SMA or Fronius inverters can be monitored via the cloud: production per inverter, energy fed into the grid, and faults (defective string, network error). The gateway reads each inverter on the Modbus RS-485 bus, transmits the data to the cloud, and sends an alert in the event of an abnormal drop in production.
Without monitoring: a failed string can go unnoticed for weeks. With monitoring: an alert is sent within minutes, and the loss of production is halted.
The Eziwan Approach
The Eziwan Gateway is mounted on a DIN rail inside the electrical cabinet, connects to the RS-485 bus of the analyzers and meters, and transmits all data to the Eziwan Cloud. Energy dashboard, alerts configurable by variable, remote access for auditing and downloading data curves—no need to travel.
For more information: industrial energy monitoring, Modbus Cloud, and connected smart buildings.