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Europump Guideline
Safety of Electrical Submersible Motors, 2000-08
metal conduits, they shall be contained within an insulating sleeve, unless the conduit cannot move in
normal use.
Compliance is checked by inspection and by manual test
16.3 Different parts of an appliance which can move in normal use or during user maintenance relative to
each other, shall not cause undue stress to electrical connections and internal conductors, including
those providing earthing continuity. Flexible metallic tubes shall not cause damage to the insulation of
the conductors contained within them.
Open-coil springs shall not be used to protect conductors. If a coiled spring, the turns of which touch one
another, is used for this purpose, an adequate insulating lining shall be provided in addition to the insulation of
the conductors.
Compliance is checked by
16.4 Bare internal wiring shall be rigid and fixed so that, in normal use, creepage distances and clearances
cannot be reduced below the values specified in 29.1.
Compliance is checked during the test of 29.1.
16.5 The insulation of internal wiring shall withstand the electrical stress likely to occur in normal use.
Compliance is checked as follows:
The insulation shall be electrically equivalent to the insulation of cords complying with IEC 60227 or
IEC 60245 or comply with the following electric strength test:
A voltage of 2 000 V is applied for 15 min between the conductor and metal foil wrapped around the
insulation. There shall be no breakdown.
NOTES
1
If the insulation of the conductor does not fulfil one of these conditions, the conductor is considered to be bare.
2
The test is only applied to wiring subjected to the supply mains voltage.
16.6 When sleeving is used as supplementary insulation on internal wiring it shall be retained in position by
positive means.
Compliance is checked by inspection and by manual test.
NOTE - A sleeve is considered to be fixed by positive means if it can only be removed by breaking or cutting or if it is
clamped at both ends.
16.7 Conductors identified by the colour combination green / yellow shall only be used for earthing
conductors.
Compliance is checked by inspection.
16.8 Stranded conductors shall not be consolidated by lead-tin soldering where they are subjected to
contact pressures unless the clamping means is constructed so that there is no risk of bad contact
due to cold flow of the solder.
Compliance is checked by inspection.
NOTES
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