Lenze 8200 motec frequency inverter 0.25kW-7.5kW - Manual (Page 30)

Installation
Electrical installation − Important notes
4−5
L
EDB82MV752 EN 5.2
4.2.1.5 Operation with earth−leakage circuit breaker
Danger!
The controllers have an internal mains rectifier. In the event of a short circuit to frame, a DC residual
current can prevent the activation of the AC−sensitive or pulse−current sensitive earth−leakage circuit
breakers and thus block the protective function for all electrical equipment operated on this
earth−leakage circuit breaker.
·
We recommend the following to protect persons and animals (DIN VDE 0100):
– Pulse current sensitive earth−leakage circuit breakers in systems where controllers are
connected to a single−phase mains (L1/N).
– Universal−current sensitive earth−leakage circuit breakers in systems where controllers are
connected to a three−phase mains (L1/L2/L3).
·
Earth−leakage circuit breakers must only be installed between mains supply and controller.
·
Earth−leakage circuit breakers can be misactivated by
– capacitive compensation currents of the cable shields during operation (especially with long,
shielded motor cables),
– simultaneous connection of several controllers to the mains,
– use of additional interference filters.
4.2.1.6 Interaction with compensation equipment
·
Controllers only consume very little reactive power of the fundamental wave from the
AC mains. Therefore, a compensation is not necessary.
·
If you operate the controllers on a mains with compensation equipment, the compensation
equipment must be provided with chokes.
– For this purpose please contact the supplier of the compensation equipment.