DatasheetIso D4
Insulation monitor for IT distribution 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 |
| Network type | IT distribution system |
| Network voltage | 24…400 VAC |
| Alarm threshold | 20…200 kΩ, selectable |
| Output | 1 alarm output, relay 250 V / 5 A AC |
| Connection | IT distribution system |
| Rated 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” |
| Alarm intervention | Red LED “ALARM” and relay switching |
| Manual test | Verifies the device’s correct operation |
| 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 rating | 650 V |
| Impulse voltage test | 5 kV, 1.2/50 µs, 0.5 J |
| Considered circuits impulse test | Input, auxiliary supply, relay |
| AC voltage test 1 | 2 kV R.M.S., 50 Hz / 1 min |
| Considered circuits 1 | Input, auxiliary supply, relay |
| AC voltage test 2 | 4 kV R.M.S., 50 Hz / 1 min |
| Considered circuits 2 | All circuits and earth |
| Fast transient burst test | According to IEC 801-4, severity level 4 |
| Electrostatic discharge immunity | According to IEC 801-2, severity level 4 |
| High-frequency disturbance test | 1 MHz damped oscillatory wave according to IEC 255-4 |
| EMC test voltage | 2.5 kV common mode, 1 kV series mode |
| Reference temperature | 20 °C ± 2 °C |
| Nominal temperature range | -5…40 °C |
| Limit temperature range | -10…55 °C |
| Storage temperature range | -25…70 °C |
| Relative humidity | 45…75 % |
| Climatic suitability | Tropicalized version for saline-humid-heat ambient |
| Housing depth | 69 mm |
| Connection | Screw terminals for cable up to 4 mm² |
| Mounting | Snap-on mounting on 35 mm DIN rail according to EN 50022 or screw mounting |
| Option | Kit for flush mounting, front frame 72 × 103 mm, panel cutout 70 × 46 mm |
| Housing material | Self-extinguishing Makrolon |
| Protection degree | IP40 front, IP20 terminals |
| Weight | 350 g |
