Electrical installation
Important notes
6
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Lenze ¯ BA 33.0008 ¯ 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)
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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.
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All unused cable entries and the box itself must be sealed against dust and water.
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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.
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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
