ISOMETER® isoCHA425 Insulation monitoring device for unearthed DC systems (IT systems) DC 0 V to 400 V. Suitable for DC charging stations according to CCS or CHAdeMO

ISOMETER® isoCHA425 Insulation monitoring device for unearthed DC systems (IT systems) DC 0 V to 400 V. Suitable for DC charging stations according to CCS or CHAdeMO The ISOMETER® was developed in compliance with the standards specified in the Declaration of Conformity. Hereby, Bender GmbH & Co. KG declares that the device covered by the Radio Directive complies with Directive 2014/53/ EU. The full text of the EU Declaration of Conformity is available at the following Internet address: UKCA Declaration of Conformity Hereby, Bender GmbH & Co. KG declares that this device is in compliance with...

Functional description The ISOMETER® is designed for use in DC charging stations according to CHAdeMo standard or Combined Charging System (CCS) and can be set to the respective mode in the ‘SEt’ menu via the Mode parameter. The ISOMETER® uses the serial hardware interface RS-485 with the following protocols: It measures • the total insulation resistance RFS; • the one-sided insulation resistance RFU; • the system leakage capacitance Ce; • the system voltage Un (True RMS) between L+ and L– • the DC system voltages (residual voltages) UL1e and UL2e between L+ as well as L– and earth. RFS and RFU...

Ordering information © LED flashes j The prewarning'and,aiarm'messages can be assigned to the relays

Test / Reset 1 - A1, A2 Connection to the supply voltage Us via fuse (line protection): If supplied from an IT system, protect both lines by a fuse.* 2 - E, KE Connect each terminal separately to PE: Use same wire cross section as for ‚A1‘, ‚A2‘. 3 - L+, L– Connection to the system to be monitored Indication in display: ‚L1‘ for L+; ‚L2‘ for L 4 - T/R 5 - 11, 14 Connection to alarm relay ‚K1‘ 6 - 11, 24 Connection to alarm relay ‚K2‘ 7 - A, B RS-485 communication interface with connectable terminating resistor Example: Connection of a BMS Ethernet gateway COM465IP Connection for the external...

Technical data Rated impulse voltage IC1/(IC2-4) Rated insulation voltage IC1/(IC2-4) Pollution degree Protective separation (reinforced insulation) between IC1/(IC2-4) Voltage test (routine test) according to IEC 61010-1 IC2/(IC3-4) Permissible system leakage capacitance Ce Measuring and display range RF & RFU Measurement uncertainty Rf / relative uncertainty Ran Measuring and display range Ce Measurement uncertainty Ce: measurement from Un > DC 50 V per conductor < 1.6 pF 1 kO.2 MO ±15 %, ±2 kO 0.17 pF Overvoltage category III, 600 V Overvoltage category III, 300 V Overvoltage category III,...

ConnectionScrew terminals Nominal current < 10 A Tightening torque 0.5...0.6 Nm (5...7 lb-in) Stripping length Rigid / flexible Flexible with ferrules with/without plastic sleeve Multiple conductor rigid Multiple conductor flexible Multiple conductor with ferrules without plastic sleeve Multiple conductor flexible with TWIN ferrules with plastic sleeve Flexible without ferrules 0.75.2.5 mm2 Flexible with ferrules with/without plastic sleeve 0.25.2.5 mm2 Multi-conductor flexible with TWIN ferrules with plastic sleeve 0.5.. .1.5 mm2 Operating mode continuous operation cooling slots must be ventilated...

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 08.2023 unless otherwise indicated.