ISOMETER® IR155-4203/IR155-4204 Insulation monitoring device (IMD) for unearthed DC drive systems (IT systems) in electric vehicles Version V004

ISOMETER® IR155-4203/IR155-4204 Insulation monitoring device (IMD) for unearthed DC drive systems (IT systems) in electric vehicles Device features • Automatic device self test • Continuous measurement of the insulation resistance 0...10 MO - Response time for the first measurement of the system state (SST) is < 2 s after switching the supply voltage on - Response time < 20 s for insulation resistance measurement (DCP) • Automatic adaptation to the existing system leakage capacitance (< 1 pF) • Detection of earth faults and interruption of the earth connection • Insulation monitoring of AC and...

Wiring diagrams

Technical data Insulation coordination acc. to IEC 60664-1 Protective separation (reinforced insulation) between (L+/L-) – (Kl. 31, Kl. 15, E, KE, MHS, MLS, OKHS) Voltage test AC 3500 V/1 min Supply/IT system being monitored Supply voltage US Max. operating current IS Max. current Ik Power consumption DC 10…36 V 150 mA 2A 6 A/2 ms inrush current AC 0…1000 V (peak value) 0…660 V r.m.s. (10 Hz…1 kHz) DC 0…1000 V <2W Response values Response value hysteresis (DCP) Response value Ran Undervoltage detection Measuring range Measuring range 0…10 MΩ Undervoltage detection 0…500 V default setting: 0 V...

(external pull-down resistor to Kl. 31 necessary 2.2 kQ) (external pull-up resistor to Kl. 15 reqired 2.2 kQ 10 Hz ► Normal condition Insulation measurement DCP; starts two seconds after power on; First successful insulation measurement at < 17.5 s PWM active 5...95 % Operating principle PWM driver Condition “SST” (30 Hz) Duty cycle ► 5.10 % (“good” 90.95 % (“bad” 20 Hz ► undervoltage condition Insulation measurement DCP (continuous measurement); starts two seconds after power on; PWM active 5.95 % First successful insulation measurement at < 17.5 s Undervoltage detection 0.500 V (Bender configurable)...

General data Necessary crimping tool (Molex) Necessary crimping tool 20 - 30 AWG (Samtec) Operating mode/mounting continuous operation/any position Dimension diagram Dimensions in mm Temperature range Voltage failure Mounting M4 metal screws with locking washers between screw head and PCB. Torx, T20 with a maximum tightening torque of 4 Nm for the screws. Furthermore, a maximum of 10 Nm tightening torque to the PCB at the mounting points. Mounting and connector kits are not included in delivery, but are available as accessories. The maximum diameter of the mounting points is 10 mm. Before mounting...