Lenze MDxMA-MHxMA-MFxMA-MDERA-MHERA Three-phase AC motors - Manual (Page 32)

Electrical installation
Important notes
6
l
32 BA 33.0005−EN 2.0
6 Electrical installation
6.1 Important notes
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Danger!
Hazardous voltage on the power connections even when disconnected from
mains: residual voltage >60 V!
Before working on the power connections, always disconnect the drive
component from the mains and wait until the motor is at standstill.
Verify safe isolation from supply!
(
Stop!
Electrical connections must be carried out in accordance with the national and
regional regulations!
Observe tolerances according to IEC/EN 60034−1:
– Voltage ±5 %
– Frequency ±2 %
– Wave form, symmetry (increases heating and affects electromagnetic
compatibility)
Observe notes on wiring, information on the nameplate, and the connection scheme in the
terminal box.
ƒ The connection must ensure a continuous and safe electrical supply, i.e.
– no loose wire ends,
– use assigned cable end fittings,
– ensure good electrical conductivity of the contact (remove residual lacquer) if an
(additional) PE connection on the motor housing is used),
– establish a safe PE conductor connection,
– tighten the plugin connector to the limit stop.
– After the connection is completed, make sure that all connections on the terminal
board are firmly tightened.
ƒ The smallest air gaps between uncoated, live parts and against earth must not fall
below the following values.