GEK-34054
pi c ks up, i t r a i se s a ta rget i nto vi ew that latches up and rema i n s
exposed unti l released by pre s s i ng a button beneath the lowe r - left
corn e r of the c ove r .
The i ns tanta neous un i t i s a sma ll-hi nge type un i t,
whi c h ma y be
mounted on the front,
to the
r i g ht of the
s haft of the
ti me
ove r c ur re nt un i t.
Its c ontacts are norma lly connected i n pa r a llel
wi th the c on ta cts of the ti me-overcurre nt un i t,
and i ts c oi l
i s
c onnected
i n s e ri e s
wi th
the
ti me-overcurren t un i t.
When
the
i n s ta n taneous un i t pi c ks up, i t r a i ses a targ et that latc hes up a nd
r e ma i ns exposed unti l i t i s r elea sed.
The s a me button that r e le a s e s
the targ et of the s ea l - i n un i t a l s o re leases the target o f the
i n s ta n taneous un i t.
RATINGS
TIME- OVERCURRENT UNIT
Rati ngs of the ti me overcurrent un i t are g i ve n i n Table I.
RELAY
IAC53A
and
IAC54A
IAC53B
and
IAC54B
FREQUENCY
CYCLES
50/60
50/60
TABLE I
PICKUP
AMPERES
MAIN (TIME)
INSTANTANEOUS
UNIT
UNIT
0.5 -
4.0
1.5 - 12.0
2.0 - 15.0
0.5 -
4.0
1.5 - 12.0
2.0 - 15.0
0.5
4.0
2.0 -
16.0
10.0 -
80.0
20.0 - 160.0
Ava i lable taps of the ti me-ove r cur r ent un i t a r e s hown i n Table II.
TABLE I I
RANGE, AMPERES
TAPS AVAILABLE {AMPERES)
0.5
-
4.0
0.5, 0.6, 0.7, 0.8 1.0, 1.2, 1.5, 2.0, 2.5, 3.0, 4.0
1.5 - 12.0
1. 5, 2.0, 2.5. 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 10.0, 12.0
2.0 - 15.0
2.0, 2.5, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 10.0, 12.0, 15.0
5
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