Advertisement
Note
1)
Note
2)
Note
3)
Note
4)
Note
5)
Note
6)
Note
7)
Note
8)
The
applicable
motor
shown
in
the
table
above
refers
to
Hitachi
Standard
3-phase
4-pole
squirrel-cage
motor.
When
other
types
of motors
are
used,
select
suitable
ones
so
that
motor
current
does
not
exceed
the
inverter
rated
current
value
during
inverter
operation.
When
a general-purpose
motor
is operated
at
over
60Hz,
contact
the motor
manufacturer.
Output
voltage
also
drops
when
supply
voltage
drops.
This
function
is not provided
for models
(1.5
to 2.5SF3EH,
2.5
to 5.5HF3EH)
not
provided with a cooling
fan.
The ground
fault
protection
circuit
detects
the output
unbalance
current
caused
by the short
circuit
between
inverter
output
lines
and
the ground.
As the detection
level
is nearly
inverter
rated
current,
the
person
cannot
be
saved,
just
inverter
pro-
tection
against
its damage.
Avoiding
the electric
shock and
death,
put
the
earth
leakage
current
breaker
on
the
input
power
supply
lines.
The
start-up
druing
motor
free
running
may
cause
the
ground
fault
trip
by the
transient
current.
The
restart
function
is
standard
equipped;
however,
it
should
be noted
that
the
allowable
instantaneous
power
failure
time
is 0.3
second.
The
amplitude
by vibration
is 0.5G
(10 to 55 Hz)
for
1.5
to
3.5SF3EH
and 2.5
to 11HF3EH
and 0.2G
(10 to 55 Hz)
for
16 to`
22HF3EH
and
33 to
180HF3EH,
The protective
system
conforms
to JEM1030-1977.
A rubber
bushing
is inserted
into
the wiring
hole.
When IP20 pro-
!
tection
is required,
provide
a conduit
for wiring
to block
the hole.
Advertisement
