en/ACS800-04/U4 Hardware Manuals - VAE ProSys sro

492) Circuit breakers which have been tested by ABB with the ACS800 can be used. Fuses must be usedwith other circuit breakers. Contact your local ABB representative for approved breaker types andsupply network characteristics.The protective characteristics of circuit breakers depend on the type, construction and settings of thebreakers. There are also limitations pertaining to the short-circuit capacity of the supply network.WARNING! Due to the inherent operating principle and construction of circuit breakers,independent of the manufacturer, hot ionized gases may escape from the breakerenclosure in case of a short-circuit. To ensure safe use, special attention must be paid tothe installation and placement of the breakers. Follow the manufacturer’s instructions.Ground fault protectionNote: Circuit breakers must not be used without fuses in the USA.The drive is equipped with an internal ground fault protective function to protect theunit against ground faults in the motor and the motor cable. This is not a personalsafety or a fire protection feature. The ground fault protective function can bedisabled with a parameter, refer to the appropriate ACS800 Firmware Manual.The EMC filter of the drive includes capacitors connected between the main circuitand the frame. These capacitors and long motor cables increase the ground leakagecurrent and may cause fault current circuit breakers to function.Emergency stop devicesFor safety reasons, install the emergency stop devices at each operator controlstation and at other operating stations where emergency stop may be needed.Note: Pressing the stop key ( ) on the control panel of the drive does not generatean emergency stop of the motor or separate the drive from dangerous potential.Planning the electrical installation