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Variable Speed Drive Series III
VARIABLE SPEED DRIVE SERIES III LIT-12012999—June 2018 www.johnsoncontrols.com
Additional cautions
CAUTION
The AC drive must always be grounded with an grounding
conductor connected to the grounding terminal marked
with. The ground leakage current exceeds 3.5 mA AC.
According to EN61800-5-1, one or more of the following
conditions for the associated protective circuit shall be
satisfied:
a) The protective conductor shall have a cross-sectional
area of at least 10 mm
2
Cu or 16 mm
2
Al, through its
total run
b) Where the protective conductor has a cross-sectional
area of less than 10 mm
2
Cu or 16 mm
2
Al, a second
protective conductor of at least the same
cross-sectional area shall be provided up to a point
where the protective conductor has a cross-sectional
area not less than 10 mm
2
Cu or 16 mm
2
Al
c) Automatic disconnection of the supply in case of loss
of continuity of the protective conductor. The
cross-sectional area of every protective grounding
conductor that does not form part of the supply cable
or cable enclosure shall, in any case, be not less than:
•
2.5 mm
2
if mechanical protection is provided or
•
4 mm
2
if mechanical protection is not provided.
The ground fault protection inside the AC drive
protects only the drive itself against ground faults in
the motor or the motor cable. It is not intended for
personal safety. The ground fault protection inside
the AC drive protects only the drive itself against
ground faults in the motor or the motor cable. It is
notintended for personal safety. Due to the high
capacitive currents present in the AC drive, fault
current protective switches may not function properly.
Do not perform any voltage withstand tests on any
part of the drive. There is a certain procedure according
to which the tests shall be performed. Ignoring this
procedure may result in damagedproduct.
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