Schneider Electric IMD-IM10 Insulation and earth fault monitoring relay

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 large and disturbed AC, DC and ACDC systems. It mesures the system insulation resistance by injecting a low frequency AC current between the network and ground.

Configuration will be set depending on the installation. Settings are available on the front of the device, through the HMI screen, or from the communication port. Settings are related to network type, alarm and pre-alarm thresholds, alarm delay from 0 to 7200 secondes, and others are available. It monitors networks up to 830VAC when connected to neutral, 480V when connected to line, and 480VDC, with up to 500microfarad.

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Specification

Complementary
Network rated voltage 0…480 V – AC at 45…440 Hz (device connected to phase)
0…830 V – AC at 45…440 Hz (device connected to neutral)
0…480 V – DC
Type of measurement Network insulation resistance – measurement range: 10 Ohm…10 MOhm
Earth leakage capacitance – measurement range: 0.1…500 µF
Local signalling Green indicator light: satisfactory insulation resistance
White indicator light: below prevention threshold
Red indicator light: wiring or internal fault
Yellow indicator light: insulation fault
Yellow flashing indicator light: communication
Threshold setting Pre-alarm: 1 kOhm…1 MOhm
Alarm: 40 Ohm…500 kOhm
Time delay range 0…120 min for signalling circuit
Response time <= 4 s
auxiliary supply voltage 100…440 V AC 50/60 Hz +/- 15 %
100…440 V AC 400 Hz +/- 15 %
100…440 V DC +/- 15 %
Power consumption in VA 25 VA
Measurement voltage 120 V
15 V
33 V
Measurement current 0…3 mA
0…825 µA
0…375 µA
internal impedance 40 kOhm – AC at 0.1…440 Hz
40 kOhm – DC
Test function Manual
Self test
output contact 2 C/O standard or fail-safe
breaking capacity 250 V – AC at 6 A
48 V – DC at 1 A
Input function Injection inhibition: 24 V AC 5 mA
Communication port protocol Modbus
Communication port support RS485
Display type Digital display
Mounting mode Flush-mounted
Mounting support Panel
Mounting position Horizontal
Connections – terminals Removable screw terminal block0.2…2.5 mm²
Material Thermoplastic
Overvoltage category III
net weight 0.75 kg
Cut-out dimensions 112 x 148 mm
Height 123 mm
Width 159 mm
Depth 90 mm
Environment
Dielectric strength 4000 V – AC
5500 V – DC
IP degree of protection Case: IP20
Front face: IP54
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
Relative humidity 0…90 %
Type of installation Indoor
Standards IEC 60364-4-41
IEC 61010-1
IEC 61557-8
CSA C22.2 No 14-05
IEC 60364-5-51
UL 508
Product certifications DNV
RMRS
CE
ABS
EAC
CSA
cULus
UL
Ambient air temperature for operation -25…55 °C
ambient air temperature for storage -40…70 °C

 

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