A-ISOMETER® IRDH375 IRDH375B - Bender

Connection4.2.3 Connection with AGH204S-4This coupling device extends the nominal voltage range of A-ISOMETERs®used in AC systems including rectifiers.12AKIRDH375KEAK160 AK80AGH204S-4U3 V3 W3UnL1L2L3NPE1 without rectifiers U n = 3AC 0....1650 V (DC max. 1000 V)2 with rectifiers U n = 3AC 0....1300 V (max. AC voltage; max. DC voltageafter rectifiers in intermediate circuits of frequency converters:1840V)The maximum DC voltage is the voltage permitted to occur in the AC part ofan IT system to PE when the IRDH375 is coupled with AGH204S-4 in thispart of the system. This voltage is dependent on the level of the nominal voltage,the type of rectification 6 pulse, 12 pulse,...), the type of converter intermediatecircuit (current... or voltage...), and the converter technology. Incase of converters, the maximum DC voltage in the intermediate circuit usuallycorresponds to the phase-to-phase voltage of the supplying AC systemmultiplied by 1.414.30 TGH1352en/11.2004