Lenze E82xVxxxKxxxxx - Manual (Page 101)

Electrical installation
Notes on project planning
Operation at earth−leakage circuit breaker (e.l.c.b.)
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101 EDS82EV903 EN 3.0
6.2.3 Operation at earth−leakage circuit breaker (e.l.c.b.)
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Danger!
The controllers are internally fitted with a mains rectifier. In case of a short
circuit to frame a pulsating DC residual current can prevent the AC sensitive or
pulse current sensitive earth−leakage circuit breakers from being activated,
thus cancelling the protective function for the entire equipment being
operated on this earth−leakage circuit breaker.
ƒ For the protection of persons and farm animals (DIN VDE 0100), we recommend
– pulse current sensitive earth−leakage circuit breakers for plants including
controllers with a single−phase mains connection (L1/N).
– universal−current sensitive earth−leakage circuit breakers for plants including
controllers with a three−phase mains connection (L1/L2/L3).
ƒ Only install the earth−leakage circuit breaker between supplying mains and drive
controller.
ƒ Earth−leakage circuit breakers may trigger a false alarm due to
– capacitive compensation currents flowing in the cable shields during operation
(particularly with long, shielded motor cables),
– simultaneous connection of several inverters to the mains
– the use of additional interference filters.
ƒ The specifications for earth−leakage circuit breakers provided in the chapter
"Technical data" apply to low−capacitance, shielded motor cables with a length of 10
m (guide value):
– E82EVxxxKxC without external measures
– E82EVxxxKxC200 with "SD" RFI filter
6.2.4 Interaction with compensation equipment
ƒ Controllers only consume very little reactive power of the fundamental wave from
the AC supply mains. Therefore, a compensation is not required.
ƒ If the controllers are connected to a supply system with compensation equipment,
this equipment must comprise chokes.
– For this, contact the supplier of the compensation equipment.