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This device belongs to the Vigilohm range designed to monitor ungrounded/IT electrical networks, in accordance to installation and products standards. According to standards, it is recommanded to equip your systems with Insulation Monitoring Devices (IMD). This device is dedicated to monitoring pure AC systems of limited size, with low disturbances. It mesures the system insulation resistance by injecting a DC current between the network and ground. Configuration will be set depending on the installation. Settings are available on the front of the device. Settings are alarm and pre-alarm thresholds. It is equipped with a manual auto-test. In case the system insulation resistance drops below the set threshold, meaning a ground fault occurred, an alarm is triggered thru the IMD output relay. Once no fault is monitored, the alarm is cleared, the alarm relay is back to normal. This product can be installed on DIN rail.
Products specifications
| Attribute name | Attribute value |
|---|---|
| Main | |
| Device short name | IM9 |
| Device application | standard environment application, marine application |
| Range | Vigilohm |
| Product name | Vigilohm IM |
| Application | small and not disturbed network |
| Product or component type | insulation monitoring device |
| Earthing system | IT |
| Range of product | Vigilohm |
| Complementary | |
| Relative impedance | 230 kOhm - AC at 45...440 Hz |
| Threshold setting | alarm: 1...250 kOhm, pre-alarm: 2...500 kOhm |
| Signal contacts composition | 1 C/O standard or fail-safe |
| Depth | 67.5 mm |
| Market segment | residential, small commercial |
| Width | 71 mm |
| Mounting position | vertical, horizontal |
| Insulation shield | no |
| Test function | local, remote test |
| Compatibility code | IM9 |
| Response time | <= 7 s |
| Mounting mode | flush-mounted, clip-on |
| Communication port protocol | - |
| [Us] rated supply voltage | 125...250 V DC +/- 15 %, 110...415 V AC 45...440 Hz +/- 15 % |
| Power consumption in VA | 7 VA |
| Measurement current | 0-70 µA |
| Net weight | 0.2 kg |
| Material | thermoplastic |
| Connections - terminals | tunnel type terminals0.2-2.5 mm² |
| Signalling circuit voltage | 12...24 V - DC at 6 A, 250 V - AC at 6 A |
| Network rated voltage | 0-480 V - AC at 45...440 Hz (device connected to phase) , 0-600 V - AC at 45...440 Hz (device connected to neutral) |
| Type of measurement | network insulation resistance |
| Mounting support | panel, DIN rail |
| Height | 90 mm |
| Environment | |
| IP degree of protection | front face: IP40, case: IP20 |
| Ambient air temperature for storage | -40-70 °C |
| Standards | IEC 60664-1, IEC 61557-8 |
| Type of installation | indoor |
| Environmental characteristic | salt mist conforming to IEC 60068-2-52, exposure to damp heat in service conforming to IEC 60068-2-56, exposure to damp heat not in service conforming to IEC 60068-2-30 |
| Ambient air temperature for operation | -25-55 °C |
| Product certifications | DNV, RMRS, BV, CE, EAC |
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