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IMD-IM20
VIGILOHM IM20 110-415VCA
- Stock status:
- Call for availability
- Manufacturer:
- Schneider
- Product code:
- IMD-IM20
Main documents
| Range | Vigilohm |
|---|---|
| Device short name | IM20 |
| product or component type | Insulation monitoring device |
| Device application | Marine application Standard environment application |
| electrical circuit type | Medium or low disturbed network |
| Earthing system | IT |
| User language | Spanish English French German Russian Chinese Portuguese Italian |
| 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 |
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 10.5 cm |
| Package 1 Width | 13.5 cm |
| Package 1 Length | 16.5 cm |
| Package 1 Weight | 443.0 g |
| Unit Type of Package 2 | S03 |
| Number of Units in Package 2 | 8 |
| Package 2 Height | 30.0 cm |
| Package 2 Width | 30.0 cm |
| Package 2 Length | 40.0 cm |
| Package 2 Weight | 4.17 kg |
Product Description
IMD-IM20
The IMD-IM20 is a device from Schneider Electric designed to monitor ungrounded/IT electrical networks, ensuring compliance with installation and product standards. It is part of the Vigilohm range, which is recommended for systems requiring Insulation Monitoring Devices (IMD). This particular model is suited for monitoring medium-sized AC, DC, and ACDC systems with limited disturbances.
Key Features and Functions:
Insulation Resistance Measurement:
The IM20 measures the system’s insulation resistance by injecting a low-frequency AC current between the network and ground.
It monitors networks up to 600VAC (when connected to neutral), 480VAC (when connected to line), and 345VDC, with a maximum capacitance of 70 microfarads.
User Configuration:
The device’s settings can be configured through the HMI (Human-Machine Interface) screen located on the front.
Alarm thresholds can be set from 0.5 kilohms to 500 kilohms.
Alarm delay settings range from 0 to 7200 seconds.
Display and Monitoring:
The black and white screen displays insulation resistance (from 100 ohms to 10 megohms), capacitance, and temporary faults.
An automatic self-test is performed every 5 hours, with the option to trigger it on demand.
Alarm System:
If the insulation resistance falls below the configured threshold, indicating a ground fault, an alarm is triggered via the IMD output relay.
The alarm is cleared automatically once the fault is resolved, and the alarm relay returns to normal.
Power Supply:
The IM20 can be powered by a source ranging from 110VAC to 415VAC or from 125VDC to 250VDC, with a tolerance of plus or minus 15%.
Installation:
The device can be installed on a DIN rail or flush-mounted.
It features an inhibition input and has ingress protection ratings of IP52 for the front face and IP20 for the rear.
It is rated for overvoltage category III.
Communication:
Equipped with an RS485 communication port, the IM20 uses the Modbus protocol for integration into network systems.
The IMD-IM20 is a robust and versatile device, essential for maintaining the safety and reliability of ungrounded electrical networks by continuously monitoring insulation resistance and providing timely alerts in case of ground faults.
Frequently Asked Questions
How does power monitoring work?
✅Power monitoring systems typically comprise a power metering device to gauge overall facility power consumption and assess power quality. Coupled with a monitoring system, these tools track energy distribution within the facility post-metering.
What is power monitoring unit?
✅A Power Monitoring Device plays a crucial role in measuring power consumption, facilitating energy-saving endeavors. While electricity itself remains invisible, it represents a convenient and ubiquitous form of energy that transforms into various manifestations such as heat, light, sound, and power, all of which are extensively utilized.
What is vigilohm?
✅Enhance safety and boost process availability with Vigilohm's range of insulation monitoring devices (IMDs). Designed for IT (ungrounded) networks, these devices offer a straightforward, dependable solution for insulation monitoring, communication, and fault location. Discover how this streamlined offering can elevate both personnel and equipment safety while optimizing process availability.
How does insulation monitor work?
✅Insulation Monitors by DOLD: Insulation Monitoring Made Simple
DOLD's insulation monitors provide seamless insulation monitoring solutions. In the event of an insulation fault, the measuring circuit triggers, allowing a proportional small current to flow. The device's electronics evaluate this current, issuing a notification if the insulation resistance drops below a predefined threshold (response value).
What is an isolation monitor?
✅Explore the Importance of Isolation Monitoring in High-Voltage Vehicle Systems
Isolation monitoring stands as a pivotal safety feature in high-voltage vehicle systems. In modern vehicles, the high-voltage system remains completely isolated from the vehicle chassis. This design safeguards against electrical shock by preventing a single fault in the high-voltage system from posing a risk to individuals.
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