Description; Application; Ratings; Induction Unit - GE IAC66M Instructions Manual

Type IAC66N relays
instantaneous unit,
delay telephone relay,
the location of these units, and Figure 3 for outline and panel drilling dimensions.
The IAC66M relay was designed for motor overload and fault current protection.
induction overcurrent
accordingly, depending
instantaneous unit
current. The six-cycle time delay telephone relay used in conjunction with the high
dropout instantaneous unit permits it to override the transient asymmetrical motor
inrush current. One of the target seal-in units is for use with the induction unit,
and the other is for use
external connection diagram is shown in Figure

INDUCTION UNIT

The induction unit coil is available in several ranges of pickup current.
lists ranges, tap values,
of the induction unit coil.
T he induction unit
volts. The current carrying ratings are affected by the tap selected on the target
and seal-in coil,
amperes, use an auxiliary
not pass through
does
protective relay.
These instructions do
possible
every contingency
furthe�
1nformation be desired or should particular problems arise
the
purchdser's purposes,
To the extent required
but no such assurance is given
GEK-86105
TYPE IAC66M
TIME OVERCURRENT RELAY

DESCRIPTION

contain a long time
a high dropout instantaneous overcurrent unit,
and two target and seal-in units.

APPLICATION

unit provides
on the service
should be set above
with the high dropout instantaneous unit.
continuous-current ratings and short time current ratings
contacts will close 30
as indicated in Table
relay that
either the contacts
not purport to cover all details or varidtions
in co e i
to be met n n ct o
the �tter should be referred
the products described herein
with local
respect to
induction overcurrent
overload protection
factor of the
the maximum
5.

RATINGS

II. I
amperes for voltages
f the tripping current
is connected such that
or the target
equi
in
with operation or
n installation,
not
which are
to the Electric
General
ANSI,
meet applicable
ordinances because
codes and
3
unit, a standard
a six-cycle time
1
See Figures and
and should
The standard
machine.
asymmetrical motor
The
not exceeding
exceeds
the tripping
and seal-in coils of the
ment
p nor to provide for
�intenance. Should
.sufficiently tor
covered
Compan�.
IEEE and NEMA
standards;
greatl�.
they vary
2
for
The
be set
inrush
typical
Table I
250
30
current