Electrical installation
Important notes
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Lenze ¯ BA 33.0005 ¯ 5.0
6 Electrical installation
6.1 Important notes
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 ±10 %
– 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.
¯ The terminal box has to be free of foreign bodies, dirt, and humidity.
¯ All unused cable entries and the box itself must be sealed against dust and water.
¯ 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,
– all connections at the terminal board are tightened.
¯ The smallest air gaps between uncoated, live parts and against earth must not fall
below the following values.
Motor diameter Minimum requirements for basic
insulation according to IEC/EN
60664−1 (CE)
Higher requirements for UL design
< 178 mm
3.87 mm
6.4 mm
> 178 mm 9.5 mm
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