HIG48VDC
Article number: 70 935- Insulation monitoring devices HIG*VDC(-L) are designed for the monitoring of the insulation status of DC IT systems with nominal voltage 12, 24, 48, 72 or 110 V DC.
- The device continuously monitors the insulation status of both branches of the isolated IT system against a reference point. For stationary equipment this is usually the PE conductor, for mobile equipment it is the vehicle frame.
- If the insulation condition in the positive branch R+ or negative branch R- is faulty, this condition is signalled by setting relay KA1/KA2. The fault condition is also indicated by LEDs on the front panel.
- These devices are equipped with a display for showing the currently measured values. The display, together with the buttons is also used to set the device.
- HIG24VDC(-L)/T, HIG48VDC(-L)/T, HIG72VDC(-L)/T, HIG110VDC(-L)/T are designed for railway use (EN 50155) to monitor the insulation condition of DC IT systems.
| Monitored IT power supply system type according to IEC 61557-8 | DC | |
| Measuring range of insulation resistance | RF | 5 ÷ 990 kΩ |
| Adjustable range of critical insulation resistance | Ran | 5 ÷ 500 kΩ |
| Number of insulation resistance fault levels (Ran) | 1 | |
| Rated voltage of monitored IT system (DC) | Un | 48 V |
| Nominal supply voltage DC | Us | 32 ÷ 60 V |
| IMD power supply | From measured IT system | |
| Power consumption | P | 2 VA |
| Measuring input’s internal impedance | Zi | > 120 kΩ |
| Internal DC resistance | Ri | > 120 kΩ |
| Measuring accuracy | ± 10 % | |
| 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 | |
| External control inputs | Test start, Deblocking function | |
| Housing material | Polyamid PA6, UL94 V-0 | |
| Electrical strength against internal circuits | 3 750 V | |
| Degree of protection of front panel | IP40 | |
| Degree of protection except the front panel | IP20 | |
| Operating temperature | ϑ | - 25 ÷ 70 °C |
| Storage temperature | - 40 ÷ 70 °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 | |
| Recommended back-up fuse | 6 A/gG | |
| Use for traction | No | |
| Operating position | Any | |
| Operation type | Permanent |