Description; Construction; Ratings - GE IAC Series Instruction Booklet

The Type I AC53 and IAC5 4 relays covered by these i nst r uct i ons a r e
extended- r ange,
inverse t i me/cu r rent cha racter i s t i cs.
i nc l u d e a h i n g e d -t ype
i ns tantaneous t r i pp i ng
desc r i bed i n the sect i on on
The d i ffe r ences between rel ays a r e noted in the fol lowi ng table:
TYPE
IAC53A
IAC53B
IAC54A
IAC54B
Each relay i s equi pped w i th a dua l - r ated ta rget seal - in unit,
is mounted in a standa r d Sl case,
of wh ich a r e s hown i n F i gu r es
Both the t ime-delay and the i nstantaneous uni t a r e adjustable ove r
range of about
un i ts, as well
r at i ng, and the tap
in the sect i on
char acter ist i cs w i l l be found in the secti on on
These instructions do not purport to cover all details or variations in equipment nor provide for every
possible contingency to be met in connection with installation, operation or maintenance.
information be desired or should particular problems arise which are not covered sufficiently for the purchaser's
purposes, the matter should be referred to the General Electric Company.
To
the extent required the products described herein meet applicable ANSI,
standards; but no such assurance is given with respect to local codes and ordinances because they vary greatly.
GEK-34054
TIME OVER CURRENT RELAYS
TYPES
IAC53A FORM
IAC53B FORM
IAC54A FORM
IAC54B FORM

DESCRIPTION

s i ng le-phase t i me
i n s t an t a n e o us
at h i gh

CONSTRUCTION.

INSTANTANEOUS
UNIT
NO
YES
NO
YES
12
to 1.
8 The available
as i nfor mat i on on

ratings

of the i r
on
RATINGS.
800
AND UP
800
AND UP
800
AND UP
800
AND UP
ove rcu r r ent
Some of the types cove r ed a l s o
un i t ,
cur rent levels.
CONTACT
CIRCUITS
1
1
2
2
the outl i ne and mount i ng d i mens i ons
and 13.
r anges
the i r cont i nuous
tar get/sea l - i n un i ts
Infor mat ion on
CHARACTERISTICS.
3
r e l ays w i th ve r y
w h i c h p r o v i d e s
Both un its
INTERNAL
CONNECTIONS
FIGURE 4
FIGURE 5
FIGURE 6
FIGURE 7
in ampe res of
r at i ng, contact
a r e g i ven
the ope r at i ng-time
Should further
IEEE
and NEMA
a r e
and
a
both