The insulation monitoring device ISOLGUARD HIG110VDC produced by HAKEL is designed for monitoring the insulation status of direct current IT power supply systems with a nominal voltage of 110V DC. The device continuously monitors the insulation state of the positive and negative output of an insulation power supply system against the base point. For stationary devices it is usually PE conductor.
The insulation monitoring device is equipped to display the numeric values of the measured insulation resistance. The measured resistance value of the positive and negative output of a controlled network is displayed on the device´s screen. There are buttons for setting the parameters of the insulation monitoring device and signalling LEDs to display the status of the controlled system or the device itself.
It is possible to connect the insulation monitoring device to the panel MDS-D via RS485 busbar. The MDS-D panel displays the actual measured values and the actual insulation monitoring device setting.
HIG110VDC can communicate with the master computer via the RS485 busbar with the protokol derived from the PROFIBUS protocol.
Only one insulation monitoring device can be connected to the same ungrounded IT power supply system.
Basic characteristics
- The monitor for insulating resistance of DC systems with the nominal voltage 110 V DC
- Displaying the measured values of the positive and negative output of a controlled network on the device‘s screen
- Two signalling relays of the IMD status and status of monitored system
- Optional memory of the alarm called with the option to unblock with the button
- Connection to the RS485 busbar, insulation strengthe 2500 V against internal circuits and network circuits
- Option to set the critical values, hysteresis values and other parameters using the insulation monitoring device buttons
- Access to setting the insulation monitoring device by button can be locked, the insulation monitoring device is unlocked by a combination of buttons
- Module for assembly on the DIN rail 35 mm with the total width 2M (36 mm)
Dimension drawing
Installation diagram
PARAMETERS
| Maximum operating voltage of the monitored ungrounded IT power supply system | Un | 80 ÷ 120 V DC |
| Power consumption | P | max. 2 VA |
| Internal impedance of the measuring input | Zi | > 200 kΩ |
| Displayed value’s range | Risol | 5 kΩ ÷ 900 kΩ |
| Measuring accuracy | ± 10% | |
| Critical insulation resistence | Rcrit | adjustable 5 kΩ ÷ 500 kΩ |
| Insulation resistance hysteresis | Rhyst | adjustable 0 ÷ +100% Rcrit |
| Delay in response of signalling | tON | adjustable from 0 to 60 sec, with a 1 sec step |
| Outputs | ||
| Signalling relay KA1. Potential-free switching contact / Electric strength to the internal circuits and to the supply circuits | 250 V AC / 1A / 3750 Vrms | |
| Signalling relay KA2. Potential-free switching contact. Electric strength to the internal circuits and to the supply circuits | 250 V AC / 1A /3750 Vrms | |
| Communication line: RS485 type MASTER-SLAVE, 9600 Bd, even count parity / Insulating strength to the internal circuits and to the network circuits | 2500 Vrms | |
| General data | ||
| Degree of protection according to IEC 60529 | IP20 | |
| Weight | m | 110 g |
| Housing material | PA-UL94 V0 | |
| Method of assembly | DIN rail 35 | |
| Recommended section of the connected conductors | S | 1 mm2 |
| Operating conditions | ||
| Operating temperature | ϑ | -10°C ÷ +60°C |
| Atmospheric pressure | 86 ÷ 106 kPa | |
| Operating position | any | |
| External magnetic and electric field | according to IEC 61326-2-4 | |
| Overvoltage category / testing voltage | III, according to IEC 60664-1:2007 | |
| Pollution degree | 2, according to IEC 60664-1:2007 | |
| Operational mode | permanent | |
| Article number | 70 934 | |
CERTIFICATIONS
DOWNLOADS
| Catalogue | |
| 2D model (728.56 KB) | for registered only |
| 3D model (469.2 KB) | for registered only |
| EC declaration of conformity (83.77 KB) | for registered only |