Electrical Wiring Of Frequency Inverters; Long Motor Leads - EURA DRIVES E800 series Safety Instructions, Installation And Operating Manual

1) Common installation rules and safety information regarding EURA E800 inverters

Electrical wiring of frequency inverters

DANGER HAZARDOUS
CAPACITOR CHARGE
LVD – DOUBLE
INSULATON
GROUNDING
E800 – Rev.01 -EN- SOFT Rev. 2.04
© 2015 EURADRIVES EUROPE GmbH
The entire plant must be disconnected from power, crosschecked for
loss of voltage and locked before starting any work
The discharge time of the internal DC-LINK capacitors
may take up to 5 minutes, it is not allowed to open the
enclosures or to do any maintenance work during
discharge cycle!!
All connection terminals for control and feed-back are single insulated
in sense of EN50178.
In case of connection to external equipment with double insulation,
the user has to provide proper arrangement, to guarantee double
insulation in sense of EN50178 for the whole system
E800 inverters are designed for steady state installation, using fixed
wiring. It is not allowed, to use power plug or similar mobile
connection.
Depending on different EMC filter arrangements, the leakage current
to ground may exceed 3,5 mA. Therefore it is recommended to use
earth connection wiring, with minimum section of 10mm
use double wiring (in sense of EN50178)
All grounding connections must be as short as possible, all leading to
one common central point (star arrangement).

Long motor leads

A motor cable lenght, exceeding 30m, may result in over-voltage
spikes on the motor side. These peaks may damage the internal
insulation of the motor.
The use of motor chokes, sinus filter or dV/dt limiting filters may
prevent from risk of motor damage.
Generally it is recommended, to use inverter duty motors
In case of any doubt, please contact the manufacturer
All output filter components must have inverter
manufactures approval
- 4 -
2
(copper) or