DatasheetIso D4
Insulation monitor for IT systems, 4 DIN modules
| Type | Insulation monitor for continuous control of insulation towards earth |
|---|---|
| Model | Iso D4 |
| Format | 4 DIN modules according to DIN 43880, 70 mm wide |
| Network type | IT system |
| Network voltage | 24…400 VAC |
| Alarm threshold | 20…200 kΩ, selectable |
| Output | 1 alarm output, relay 250 V / 5 A AC |
| Connection | IT system |
| Rated input frequency | 50 Hz |
| Working frequency | 47…63 Hz |
| Measuring voltage | 12 VDC |
| Measuring current | < 50 µA |
| Threshold setting | Selectable by 6-position rotary switch |
| Threshold ranges | 20 / 40 / 70 / 100 / 150 / 200 kΩ |
| Response time | < 0.6 s |
| Accuracy | ± 10 % of selected value |
| Power-on signalling | Green LED “ON” lights up |
| Alarm indication | Red LED “ALARM” lights up and relay switches |
| Manual test | Checks the correct operation of the device |
| Reset | Automatic |
| Hysteresis / reset value | < 20 % |
| “ALARM” relay | 1 SPDT changeover contact |
| Contact rating | 5 A / 250 VAC at cosφ 1; 3 A / 250 VAC at cosφ 0.4; 5 A / 30 VDC |
| Safety | Negative safety, normally de-energized relay |
| Auxiliary supply | 230 V |
| Auxiliary supply tolerance | 192…253 V |
| Auxiliary supply rated frequency | 50 Hz |
| Frequency tolerance | 47…63 Hz |
| Power consumption | ≤ 4 VA |
| Insulation voltage | 650 V |
| Impulse withstand voltage | 5 kV, 1.2/50 µs, 0.5 J |
| Impulse test circuit | Input, auxiliary supply, relay |
| Test voltage 1 | 2 kV R.M.S., 50 Hz / 1 min |
| Test circuit 1 | Input, auxiliary supply, relay |
| Test voltage 2 | 4 kV R.M.S., 50 Hz / 1 min |
| Test circuit 2 | All circuits towards earth |
| EMC transient overvoltage | According to IEC 801-4, level 4 |
| EMC electrostatic discharge | According to IEC 801-2, level 4 |
| High-frequency disturbance immunity | 1 MHz damped oscillation according to IEC 255-4 |
| EMC test voltage | 2.5 kV common mode, 1 kV series mode |
| Reference temperature | 20 °C ± 2 °C |
| Operating temperature | -5…40 °C |
| Max. temperature range | -10…55 °C |
| Storage temperature | -25…70 °C |
| Relative humidity | 45…75 % |
| Climatic suitability | Tropicalized version |
| Housing depth | 69 mm |
| Connection | Screw terminal for conductor up to max. 4 mm² |
| Mounting | Snap-on mounting on 35 mm DIN rail according to EN 50022 or screw mounting |
| Option | Front mounting kit with front frame 72 × 103 mm, panel cutout 70 × 46 mm |
| Housing material | Self-extinguishing Makrolon |
| Protection degree | IP40 front, IP20 terminals |
| Weight | 350 g |
