7 | Connection STÖBER
34
11/2017 | ID 442793.00
Maximum number of drive controllers
Two drive controllers of the same rating can be connected using a common fuse combination.
The fuses and the resulting maximum line input current correspond to that of a single drive
controller.
In order to prevent gradual damage to the safety fuse, you can operate a maximum of two drive
controllers on one fuse combination.
ATTENTION!
Damage due to overload!
In order to ensure an even distribution of charging current on all AC-supplied drive controllers,
all circuit breakers must be closed when engaging the power supply.
▪ In order that the input rectifier is not overloaded in the event of a possible fuse failure in the
group, evaluation of the grid monitoring for AC-supplied drive controllers must lead to
deactivation of the entire DC link group.
7.3.2 Residual current protective device
STOBER devices can be protected with a residual current protective device (RCD) to detect
residual currents. Residual current protective devices prevent electrical accidents, especially
ground fault through the body. They are generally classified by their triggering limit and
suitability for detecting different types of residual currents.
Depending on the function, leakage currents may occur when operating drive controllers.
Leakage currents are interpreted as residual currents by residual current protective devices and
may therefore lead to false triggering. Depending on the relevant power supply connections,
residual currents may occur with or without a DC current component. Because of this, you
should take into consideration both the magnitude as well as the profile of the possible leakage
or residual current when selecting a suitable RCD.
DANGER!
Electrical voltage! Risk of fatal injury due to electric shock!
Leakage currents with a DC current component may occur in 3-phase installations.
▪ Always protect 3-phase installations with type B residual current protective devices,
sensitive to all currents.
To Next Page
Loading...
Need help?
General
