Residual current monitoring module RDC104-4

measurementfor EV charger

The residual current monitoring module RDC104-4, with patented measurement method, is used in combination with a measuring current transformer CTBC17 and a type A RCD which has to be provided in the installation for DC fault current monitoring of AC charging systems for electric vehicles in which AC or DC fault currents can occur. The rated voltage Un is 250 V and the rated current (charging current) In = 1 x 48 A/3 x 32 A. The RDC104-4 is suitable for integration into a charging unit Mode 3 (AC) as a RDC-M module according to IEC 62955. The RDC104-4 is only intended for purchase by the manufacturer of the charging system and not for end users! Features Four outputs (Switch1, Switch2, Error, PWM) Patented measurement method (Patents: EP 2 571 128 / US 9,397,494 / ZL 201210157968.6 / CN 103001175, EP 2 813 856) Measuring range ±300 mA Residual current resolution < 0.2 mA Rated current up to 32 A (singlephase) or 3 x 32 A RMS (three-phase) Fault output (integrated self monitoring and test functions) High insensitivity to external interferences Available variants for application according to IEC 62955 Wide range of use even in severe environments (e.g. in the event of external fields) In applications according to IEC 62955, the device can replace a type B RCD when combined with a type A RCD and a suitable switching device (e.g. a power relay) Applications DC fault current monitoring of AC charging systems for electric vehicles