ISOMETER® isoHV425 with AGH422 Insulation monitoring device for unearthed AC, AC/DC and DC systems up to 3(N)AC, AC 1000 V Image similar

Insulation monitoring device for unearthed AC, AC/DC and DC Device features • Monitoring of the insulation resistance Rf for unearthed AC/DC systems • Measuring the system voltage Un (True-RMS) with undervoltage/ overvoltage detection • Measuring the DC residual voltages UL1e (L1/+ to PE) and UL2e (L2/- to PE) • Selectable start-up delay, response delay and delay on release • Alarm output via LEDs ("AL1", "AL2"), display, and alarm relays ("K1", "K2") • Automatic device self test with connection monitoring • Selectable n/c or n/o relay operation • Measured value indication via multifunctional...

Wiring diagram legend: Feed the supply voltage US via 5 A back-up fuses. Only use 60/75 °C copper lines.

ISOMETER® isoHV425 with AGH422 RBENDER

Response values Definitions Supply circuit (IC2) Output circuit (IC3) Control circuit (IC4) Rated voltage Overvoltage category Rated impulse voltage IC2/(IC3-4) 4 kV Response value Ran1 Response value Ran2 Relative uncertainty Ran Hysteresis Ran Undervoltage detection Overvoltage detection Relative uncertaintyU Relative uncertainty depending on the frequency > 200 Hz Hysteresis U 11.500 kO (50 kO)* 10.490 kO (25 kO)* ±15 %, at least ±3 kO 25 %, at least 1 kO 30.1090 V (off)* 31.1100 V (off)* ±5 %, at least ±5 V -0,075 %/Hz Time response Rated insulated voltage IC2/(IC3-4) 250 V Delay on release...

ISOMETER® isoHV425 with AGH422 Kr BENDER Analogue output (isoHV425-D4M-4 only) Operating mode mid-scale U (R = 120 kO)* Functions (insulation value RF)* Max. no load voltage (open terminals) DC 12 V Max. short-circuit current 25 mA, short-circuit-proof Voltage output DC 0...10 V, load > 20 kO* Current output DC 0/4.20 mA, load < 130 O Current output DC 4.400 |jA, load < 3 kO Tolerance ±10 %, +2 % of the full scale value Switching elements Classification of climatic conditions acc. to IEC 60721 (related to temperature and relative humidity) Classification of mechanical conditions acc. to IEC 60721...

ISOMETER® isoHV425 with AGH422 Technical data AGH422 Insulation coordination acc. to IEC 60664-1/-3 Environment/EMC Measuring circuit (IC1) Control circuit (IC2) Rated voltage Overvoltage category Rated impulse voltage Ambient temperatures Operation Un < 700 V Operation Un > 700 V Transport Storage Rated insulated voltage Classification of climatic conditions acc. to IEC 60721 (related to temperature and rel.humidity) Protective separation (reinforced insulation) between Classification of mechanical conditions acc. to IEC 60721 Nominal system voltage range Un AC/DC 0...1000 V Measuring circuit...

ISOMETER® isoHV425 with AGH422 Kr BENDER Standards and certifications Screw-type terminals Nominal current Tightening torque Conductor sizes Stripping length Rigid/flexible Flexible with ferrules with/without plastic sleeve Multi-conductor rigid Multi-conductor flexible Multi-conductor flexible with ferrules without plastic sleeve Multi-conductor flexible with TWIN ferrules with plastic sleeve The ISOMETER® was developed in compliance with the following standards: Push-wire terminals Nominal current Conductor sizes Stripping length Rigid Flexible without ferrules Flexible with ferrules with/without...

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Bender GmbH & Co. KG Londorfer Straße 65 35305 Grünberg Germany Tel.: +49 6401 807-0 [email protected] www.bender.de © Bender GmbH & Co. KG, Germany Subject to change! The specified standards take into account the edition valid until 08.2024 unless otherwise indicated.