The insulation monitoring device HIG93/CL400 produced by HAKEL for the ISOLGUARD series is designed for monitoring the insulation status of single-phase and 3-phase ungrounded IT power supply systems, is designed and operated according to standards IEC 61010-1:2010, EN 50522, IEC 61936-1:2010.
Device enables monitoring of single-phase and 3-phase ungrounded IT power supplies systems up to the maximum operating voltage 275V AC, eventually 3x275V AC. If the insulation status monitoring of a single-phase or 3-phase IT system with higher operating voltage is required, it is necessary to create an artificial centre using TL* inductors produced by HAKEL. Such a created centre is connected to the terminal of insulation monitoring device HIG93/CL400.
The insulation monitoring device enables to display the numeric value of the measured insulation resistance. Device is equipped with buttons for setting module parameters and with signalling LED diodes to display the status of monitored power supply system and status of the device.
HIG93/CL400 device is equipped with active current loop output 4 ÷ 20 mA, which indicates actual measured insulation resistance value. Current loop is galvanic isolated from the monitored system and from the internal circuit of the device.
Two inbuilt signalling relays with switching contacts enables alarm signalling for two independently set values of critical insulation resistance. The insulation monitoring device has an optional alarm memory function with the option to terminate the alarm using the button on the insulation monitoring device.
Local and remote testing of the insulation monitoring device function can be done.
|Supply voltage range||Us||90 - 264 V AC (47÷63 Hz) or 120 - 370 V DC|
|Insulation voltage between power supply and internal circuits||3000 V AC|
|Maximum IT power supply system operating voltage (without external inductor)||Un||275 V AC|
|Power consumption||P||max. 5 VA|
|Measuring voltage||Um||24 V DC|
|Measuring current||Im||< 1 mA|
|Internal resistance of the measuring input||Zi||> 1 MΩ|
|Displayed value’s range||Risol||5 kΩ - 900 kΩ|
|Measurement accuracy 5 kΩ … 10 kΩ||2 kΩ|
|Measurement accuracy 10 kΩ … 900 kΩ||± 10%|
|Critical insulation resistence||Rcrit||adjustable 1 kΩ / 3,5 kΩ / 7,5 kΩ / 22 kΩ / 50 kΩ / 80 kΩ|
|Insulation resistance hysteresis||Rhyst||adjustable 0 - +100% Rcrit|
|Delay in response of signalling||tON||adjustable 0 - 60 sec, with a 1 sec step|
|Signalling relay KA1. Potential-free switching contact / Electric strength to the internal circuits and to the supply circuits||230 V AC / 1A / 3750 Vef|
|Signalling relay KA2. Potential-free switching contact. Electric strength to the internal circuits and to the supply circuits||230 V AC / 1A / 3750 Vef|
|Current output type||Isolated passive current loop|
|Insulating strength against internal circuits and network circuits||3 kV AC|
|Maximum load resistor of the loop||500 Ω (power supply from a 24V DC source inside the module)|
|Operating range of insulation status value signalling||4 - 20 mA|
|Maximum range of current output||0 - 25 mA|
|Uncertainty of Risol value signalling – Typ.||< 1 %|
|Uncertainty of Risol value signalling – Max.||± 5 %|
|Degree of protection according to IEC 60529||IP20|
|Housing material||PA-UL 94 V0|
|Method of assembly||on the bar DIN 35|
|Recommended section of the connected conductors||S||1 mm2|
|Operating temperature||ϑ||-10°C - +60°C|
|Atmospheric pressure||86 - 106 kPa|
|External magnetic and electric field||according to IEC 61326-24|
|Overvoltage category / testing voltage||III, according to IEC 60664-1:2007|
|Pollution degree||2, according to IEC 60664-1:2007|
|Article number||70 932|
|2D model (728.74 KB)||for registered only|
|3D model (469.21 KB)||for registered only|