Technical data137Category C3The drive complies with the standard with the following provisions:1. The motor and control cables are selected as specified in the hardware manual.2. The drive is installed according to the instructions given in the hardware manual.3. Maximum cable length is 100 metres.WARNING! A drive of category C3 is not intended to be used on a low-voltage publicnetwork which supplies domestic premises. Radio frequency interference isexpected if the drive is used on such a network.Category C4If the provisions under Category C3 cannot be met, the requirements of the standardcan be met as follows:1. It is ensured that no excessive emission is propagated to neighbouring low-voltage networks. In some cases, the inherent suppression in transformers andcables is sufficient. If in doubt, the supply transformer with static screeningbetween the primary and secondary windings can be used.2. An EMC plan for preventing disturbances is drawn up for the installation. Atemplate is available from the local ABB representative.3. The motor and control cables are selected as specified in the hardware manual.4. The drive is installed according to the instructions given in the hardware manual.WARNING! A drive of category C4 is not intended to be used on a low-voltage publicnetwork which supplies domestic premises. Radio frequency interference isexpected if the drive is used on such a network.Low voltageEquipmentLow voltageEquipmentEquipment(victim)Supply transformerMedium voltage networkStatic screenPoint of measurementDriveNeighbouring network
