Mitsubishi FREQROL-U100 User Manual

3. Leakage
current
Leakage
current
will
flow
through
stray
capacity
which
exists
between the
ground
and
a cable,
motor,
etc. The
value
of the
leakage
current
depends
on the
cable
length,
wiring
method
and
inverter
carrier
frequency, and will
increase
when
using
a
low-acoustic
noise inverter, so use the
following
countermeasures.
(1)
Leakage
current
to the
ground
The
leakage
current
will not
affect
only
the
inverter
but
may
pass
into
other
equtpments
through
the
grounding
cables
and
may
cause
a
leakage
breaker
or
relay
unnecessary
trip.
_Countermeasures
Route
of
leakage
current
•
Lower
the
inverter's
carrier
frequency
(Pr.
72). Note
that
this
will
increase
the
motor
acoustic
noise
.
• Use a
leakage
breaker
that
corresponds
to high
harmonics
and
surges
(Mitsubishi
New
Super
NV Series,
etc.)
for the inverter
or
other
lines
when
using
the
low-acoustic
noise model
(with
high
carrier
frequency).
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Mitsubishi FREQROL-U100 Specifications

General

Brand	Mitsubishi
Model	FREQROL-U100
Category	Inverter
Language	English