HIG97
Article number: 70 936- HIG97 is a very durable series of insulation monitoring devices for industrial isolated systems (IT systems).
- They are designed for monitoring the insulation resistance on systems with a high incidence of industrial interference (higher harmonic).
- They are characterized by an extremely fast response to insulation failure. Fault of insulation resistance is detected within 80 ms.
- They can be connected to the IT systems up to 3 x 1200 V, using a TL 1200 couppling device.
- IMDs are designed with independent power supply. That means that these insulation monitors can be powered from a different system than the one they measure. This has the significant effect that the IMDs are able to measure even de-energized system.
- HIG97 is equipped with a non-flammable measuring circuit, so it is suitable for environments with a risk of explosion (installation in a solid enclosure).
| Monitored IT power supply system type according to IEC 61557-8 | AC | |
| Measuring range of insulation resistance | RF | 5 ÷ 900 kΩ |
| Adjustable range of critical insulation resistance | Ran | 5 ÷ 300 kΩ |
| Number of insulation resistance fault levels (Ran) | 2 | |
| Rated voltage of monitored IT system (AC) | Un | 230 V |
| IMD power supply | From measured IT system, From independent power source | |
| Nominal supply voltage AC | Us | 90 ÷ 265 V |
| Nominal supply voltage DC | Us | 120 ÷ 370 V |
| Power consumption | P | 5 VA |
| Measuring voltage | Um | 18 V |
| Measuring current | Im | < 0.48 mA |
| Measuring input’s internal impedance | Zi | > 100 kΩ |
| Measuring accuracy | ± 10 % | |
| Electrical strength against internal circuits | 3 750 V | |
| Equipped with display | Yes (OLED technology) | |
| Supported module of distant signalisation (MDS) | MDS-D, MDS-DELTA | |
| Communication interface for user | RS485 bus | |
| Communication protocol | ISOLGUARD, PROFIBUS | |
| Housing material | Polyamid PA6, UL94 V-0 | |
| Degree of protection of front panel | IP40 | |
| Degree of protection except the front panel | IP20 | |
| Operating temperature | ϑ | - 10 ÷ 60 °C |
| Protection class according to IEC 61140 | II | |
| Recommended cross-section of connected conductors | S | 1 mm2 |
| Installation | On DIN rail 35 mm | |
| Modular width | 4 | |
| Operating position | Any | |
| Operation type | Permanent |