Section VIII - Technical data
46
Electric cable size and fuses
Important
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
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.
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