HIG93T/24.1
Article number: 70 927/24.1- HIG93T are a series of insulation monitor devices (IMDs) for insulated systems (IT systems) in rolling stock.
- The IMDs are designed according to the EN 50155 standard and are prepared for measuring insulation resistance in trains, trams, and trolleybuses.
- The IMDs are usually applied with a range of TL * T coupling devices, which allow monitoring of the usual operating voltages of 3 x 400 V or 3 x 500 V.
| 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 | 275 V |
| IMD power supply | From independent power source | |
| Nominal supply voltage AC | Us | 10 ÷ 26 V |
| Nominal supply voltage DC | Us | 11 ÷ 38 V |
| Power consumption | P | 5 VA |
| Measuring voltage | Um | 12 V |
| Measuring current | Im | < 0.6 mA |
| Measuring input’s internal impedance | Zi | > 2 000 kΩ |
| Measuring accuracy | ± 10 % | |
| Electrical strength against internal circuits | 3 750 V | |
| Equipped with display | No display | |
| 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 | |
| External control inputs | Test start | |
| Degree of protection of front panel | IP40 | |
| Degree of protection except the front panel | IP20 | |
| Operating temperature | ϑ | - 25 ÷ 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 | 2 | |
| Use for traction | Yes | |
| Operating position | Any | |
| Operation type | Permanent |