GEDA
®
3700 Z/ZP
Electrical connected loads
ML034 GB 2017 / 11
Page 17 of 60
Assembly Instructions
Note for machines with frequency converter
This product can cause a direct current in the protective earthing
conductor. At those places where a residual current device (RCD) or a
residual current monitor (RCM) is used for protection in the event of direct
or indirect contact, then only an RCD or RCM of Type B is permitted on
the power supply end of this product.
If the installation guidelines include a “residual current device” (residual
current circuit breaker), then you must use a
“Type B”
residual current
circuit breaker (all-current sensitive) for three-phase frequency converters.
Select a residual current circuit breaker with the following features:
•
Filtering of high-frequency currents.
•
A delay that prevents triggering caused by interference capacities which
may be charged at switch-on.
This delay is not possible on 30 mA residual current circuit breakers. In
this case, select a residual current circuit breaker that is resistant to
accidental triggering, for example a residual current circuit breaker with
enhanced immunity to interference (super-immune).
If several machines with frequency converters are operated from a mains
connection, then one residual current device (residual current circuit
breaker) must be used for each machine with a frequency converter.
WARNING
Electric shock
The frequency converter can prevent correct function or lead to
malfunctions in the “type A” residual current device.
In the event of defects e.g. in the wiring, this can lead to electric
shocks.