DatasheetIso D4-Zs
Insulation monitor for hospital use, 4 DIN modules
| Type | Insulation monitor for hospital use |
|---|---|
| Format | 4 DIN modules according to DIN 43880 |
| Application | Continuous control of insulation towards earth in medical IT systems |
| Reference standards | EN / IEC 61557-8, Attachment A and B; field of application IEC 60364-7-710 |
| Connection | Insulation transformer Iso TV, NT699 |
| Network voltage | 230 V |
| Rated frequency | 50 Hz |
| Working frequency | 47…63 Hz |
| Insulation measuring circuit current | ≤ 100 µA |
| External VT temperature sensor | Pt100, 2-wire resistance bulb |
| Current measurement | Connection by CT/5 A |
| Rated burden input current | ≤ 0.5 VA |
| Input impedance | > 100 kΩ |
| Measuring voltage | < 15 V |
| Display | LCD |
| Digit height | 5 mm, 2 lines × 8 digits |
| Measurement display | Subdivided into 7 pages |
| Displayed quantities | Resistance or impedance towards ground, insulation VT temperature, resistance towards ground, capacity towards ground, voltage, frequency, current, active power, apparent power, apparent power demand and apparent power max. demand |
| Alarm displays | Insulation pre-alarm by blinking yellow LED; insulation alarm by yellow LED; temperature and/or power pre-alarm by blinking yellow LED; temperature and/or power alarm by yellow LED |
| Anomaly displays | No measuring voltage; connection breakdown to the equipotential junction |
| External instrument CT | External instrument CT ratio selectable from 1…9999 |
| External insulation VT | Rated apparent power of the insulation transformer adjustable |
| Selectable power Pn | 1.5 / 2.5 / 3 / 4 / 5 / 6.3 / 7.5 / 8 / 10 kVA |
| Measurement | Insulation resistance R or insulation impedance Z selectable |
| Insulation alarm | 50…500 kΩ |
| Insulation pre-alarm | Alarm…500 kΩ |
| Insulation VT temperature alarm | 60…150 °C |
| Insulation VT temperature pre-alarm | 60 °C…alarm |
| Power alarm | 50…100 % Pn |
| Power pre-alarm | 50 % Pn…alarm |
| Alarm hysteresis | 0…99 % |
| Alarm delay | 0…99 s |
| Relay state | Normally energized or de-energized |
| Average power | Delay time 5 / 8 / 10 / 15 / 20 / 30 / 60 minutes |
| RS485 address | 1…255 |
| RS485 transmission speed | 1,200 / 2,400 / 4,800 / 9,600 / 19,200 bit/s |
| Auxiliary supply | 230 V |
| Auxiliary supply tolerance | 0.9…1.1 Uaux |
| Rated burden | ≤ 6 VA / ≤ 4 W |
| RS485 communication | Galvanically insulated from input measurement, RS485 3-wire, serial asynchronous, JBUS / MODBUS compatible |
| RS485 required response time | ≤ 200 ms |
| Max. meters on the bus | 32, up to 255 with RS485 repeater |
| Highest distance from supervisor | 1200 m |
| Insulation alarm output | Optoelectronic relay with SPST-NO volt-free contact, 230 VAC / 50 mA |
| Temperature / power alarm output | Optoelectronic relay with SPST-NO volt-free contact, 230 VAC / 50 mA |
| Remote repeater panel Iso QZ output | Insulated output for remote repeater panel supply and network connection; each Iso D4Z insulation monitor can supply up to 5 Iso QZ repeaters |
| Installation category | III |
| Pollution degree | 2 |
| Insulation reference voltage | 300 V |
| AC voltage test | R.M.S. 50 Hz / 1 min, values according to table |
| Electromagnetic compatibility | According to EN / IEC 61326-2-4 |
| Nominal temperature range | 23 °C ± 2 °C |
| Temperature range | -5…55 °C |
| Storage temperature range | -25…70 °C |
| Climatic suitability | Suitable for tropical climates |
| Max. power dissipation | ≤ 4 W |
| Housing | 4 DIN modules according to DIN 43880 |
| Front frame and terminal blocks | Sealable front frame and terminal blocks |
| Connections | Screw terminals for cable up to 4 mm² |
| Mounting | Snap-on 35 mm rail |
| Rail type | TH35-15 according to EN / IEC 60715 |
| Housing material | Self-extinguishing Makrolon |
| Protection degree | IP54 front frame, IP20 terminals |
| Weight | 285 g |
