Bender isoCHA425-D4-4 eMobility insulation monitor
The ISOMETER® is used for DC charging stations according to the Japanese CHAdeMO charging standard for voltages between 50 V DC and 400 V. Single-pole insulation faults are reported with a response time of ⤠1 second. Two-pole insulation fault within 10 seconds. The maximum permissible mains leakage capacity CE is 2 μF. Individual parameterization means that adaptation to the plant and operating conditions must always be carried out on site in order to meet the requirements of the standards. Observe the limits of the application area specified in the technical data. Any other use or use beyond this is considered to be improperDC charging stations for electric vehicles according to the Japanese charging standard CHAdeMOThe ISOMETER® measures the effective value (TrueRMS) of the mains voltage UN between L+ and Las well as the DC voltages between L+ and earth (UL+e) and between L- and earth (UL-e). It determines the fault location R%, i.e. the distribution of the insulation resistance between the L+ and L- conductors from a minimum line DC voltage, and indicates this with a + or - sign for the insulation resistance value. The value range of the error location is ±100 %:Display / meaning-100 % / one-sided error at conductor L.0 % / symmetrical error+100 % / one-sided fault on conductor L+The ISOMETER® uses the RS-485 serial hardware interface with the following protocols:⢠BMS The BMS protocol is an integral part of the BenderMeter interface (BMS bus protocol). Data is transferred using ASCII characters.⢠Modbus RTU Modbus RTU is an application layer messaging protocol that provides master/slave communication between devices that are connected together via bus systems and networks. Modbus RTU messages have a 16-bit CyclicRedundant Checksum (CRC) that ensures reliability. ⢠IsoDataThe ISOMETER® continuously transmits an ASCII data string with a clock cycle of approx. 1 second. Communication with the ISOMETER® is not possible in this mode and no further transmitters may be connected to the RS-485 bus cable. The parameter address, baud rate, and parity for the interface protocols are configured in the out menu.This text is machine translated.