6996 0223 96 Issue A
© Edwards Limited 2016. All rights reserved. Page 44
Edwards and the Edwards logo are trademarks of Edwards Limited.
Motor voltage
supply range (V)
EDC 300
(Over
pressure
pump)
8.4 Electric cable size and fuses
Important
WARNING
The voltage on the pump terminals must not deviate more than 10% of the nominal
voltage.
It is however highly recommended to keep the voltage drop over the supply cables at
nominal current below 5% of the nominal voltage (IEC 60204-1).
If cables are grouped together with other power cables, it may be necessary to
use cables of a larger size than those calculated for the standard operating
conditions.
Use the original cable entry. See section Dimension drawings.
To preserve the IP protection degree of the electric cubicle and to protect its
components from dust from the environment, it is mandatory to use a proper
cable gland when connecting the supply cable to the pump.
Local regulations remain applicable if they are stricter than the values proposed
below.
CAUTION
Always double-check the fuse size versus the calculated cable size. If required, reduce fuse size or
enlarge cable size.
Cable length should not exceed the maximum length according to IEC60204 Table 10.
CAUTION
Keep in mind that the starting currents can be 1000% higher than the nominal currents of the motor.
Leakage breaker (optional)
If the installation requires a leakage breaker, always use an all current sensitive leakage breaker, RCM or
RCD Type B (according to IEC/EN 60755) with a sufficient trip level.