Schneider Insulation Monitoring Device IM20 monitors the insulation resistance of an IT network by injecting an AC signal between this network and the ground. It is a reliable solution for ensuring the safety and reliability of your electrical systems.
Feature of Schneider Insulation Monitoring Device IM20
- AC measuring signal, for AC, DC, and AC/DC systems.
- Wide voltage range: Monitors networks up to 600VAC (neutral) or 480VAC (line) and 345VDC.
- Customizable settings: Adjust alarm thresholds and delay times to suit your specific needs.
- Real-time monitoring: Displays insulation resistance, capacitance, and temporary faults.
- Automatic testing: Conducts regular self-tests for optimal performance.
- Flexible installation: Mounts on DIN rail or flush-mounted, with an inhibition input option.
- Robust construction: IP52 front panel and IP20 rear protection, with overvoltage category III.
- Remote monitoring: Communicates via RS485 Modbus protocol.
- Measures the insulation resistance from from 0.1kΩ to 10MΩ.
- Measures earth leakage capacitance from 0.1 to 70 μF (IM20)
- 1 settable alarm (and 1 settable pre-alarm threshold on IM20).
Specification of Schneider Insulation Monitoring Device IM20
| Specification | Parameters |
| Network rated voltage | 0…600 V – AC at 45…440 Hz (device connected to neutral) |
| 0…480 V – AC at 45…440 Hz (device connected to phase) | |
| 0…345 V – DC | |
| Data recording | Alarm logs |
| Type of measurement | Network insulation resistance – measurement range: 0.1 kOhm…10 MOhm |
| Earth leakage capacitance – measurement range: 0.1…40 µF | |
| History of alarms | |
| Local signalling | Green indicator light: satisfactory insulation resistance |
| White indicator light: below prevention threshold | |
| Orange indicator light: below fault threshold | |
| Orange flashing indicator light: transient fault | |
| Threshold setting | Prevent: 1 kOhm…1 MOhm |
| Fault: 0.5…500 kOhm | |
| Time delay range | 0…5 min for signalling circuit |
| Response time | <= 5 s |
| auxiliary supply voltage | 110…415 V AC 45…440 Hz +/- 15 % |
| 125…250 V DC +/- 15 % | |
| Power consumption in VA | 12 VA |
| Measurement voltage | 75 V |
| Measurement current | 0…0.4 mA |
| internal impedance | 110 kOhm – AC at 0.1…440 Hz |
| Test function | Manual |
| Self test | |
| output contact | 1 C/O standard or fail-safe |
| breaking capacity | 250 V – AC at 6 A |
| 12…24 V – DC at 6 A | |
| Input function | Injection inhibition: 24 V DC 5 mA |
| Communication port protocol | Modbus |
| Communication port support | RS485 |
| Display type | Digital display |
| Mounting mode | Clip-on |
| Flush-mounted | |
| Mounting support | DIN rail |
| Panel | |
| Connections – terminals | Removable screw terminal block0.2…2.5 mm² |
| Material | Thermoplastic |
| Overvoltage category | III |
| net weight | 0.25 kg |
| Height | 110 mm |
| Width | 96 mm |
| Depth | 59 mm |
| Dielectric strength | 4000 V – AC |
| 5500 V – DC | |
| IP degree of protection | Front face: IP52 |
| Environmental characteristic | Exposure to damp heat not in service conforming to IEC 60068-2-30 |
| Exposure to damp heat in service conforming to IEC 60068-2-56 | |
| Salt mist conforming to IEC 60068-2-52 | |
| Operating altitude | <= 3000 m |
| Pollution degree | 2 |
| Type of installation | Indoor |
| Standards | IEC 60364-4-41 |
| IEC 61010-1 | |
| IEC 61557-8 | |
| IEC 61326-2-4 | |
| Product certifications | BV |
| DNV | |
| CE | |
| EAC | |
| RMRS | |
| Ambient air temperature for operation | -25…55 °C |
| ambient air temperature for storage | -40…70 °C |
Application of Schneider Insulation Monitoring Device IM20
- Industrial AC, DC, and AC/DC networks.
- Typical segments: Industry, Power generation, Marine, Railways, Airport, Oil&Gas, Mining, Water, Heating & Cooling, lift, etc.
Dimension of Schneider IM20
