Circuit Breakers; Protection Against Short-Circuit In The Dc Cable; Protection Of The Wfu-Xx Regen Filter Module Against Thermal Overload; Ground Fault Protection - ABB ACSM1 Hardware Manual

Circuit breakers

The protective characteristics of circuit breakers depend on the supply voltage as
well as the type and construction of the breakers. There are also limitations
pertaining to the short-circuit capacity of the supply network. Your local ABB
representative can help you in selecting the breaker type when the supply network
characteristics are known.

Protection against short-circuit in the DC cable

Protect the DC cable with fuses. Fuse recommendations are given in the chapter
Technical

Protection of the WFU-xx regen filter module against thermal overload

By default, the regen filter module is also protected against thermal overload. The
regen filter module thermistor must be connected in the regen supply module. The
thermistor in the regen filter module is monitored by the regen supply module with
default settings.

Ground fault protection

The regen supply module is equipped with an internal ground fault protective
function to protect the unit against ground faults in the supply and the supply cable.
This is not a personal safety or a fire protection feature. The ground fault protective
function can be disabled with a parameter, refer to the appropriate Firmware Manual.

Emergency stop devices

For safety reasons, install the emergency stop devices at each operator control
station and at other operating stations where emergency stop may be needed.
Note: Pressing the stop key on the control panel of the regen supply module (or
drive) does not generate an emergency stop of the motor or separate the regen
supply module or the drives from dangerous potential.
data.
Planning the electrical installation
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