GEK-34054
The
t ime
t he
pos ition , whe n the
s e c onds.
r e lay takes
cu r r e n t is
t o r e set
r e duced t o
t o t he
No.
1 0 t i me-d i a l
ze r o, i s a ppr oxima t e ly 6 0
F i gu r e
8
(50 Hz}
and Figu r e
9
(6 0 Hz}
s how
the
cha r ac te r i s t i c s f or relay type s IAC53 and IAC54.
The
cu r ve for t he i nstantaneous un i t i s shown on Figu r e 10 .
RECEIVING, HANDLING, AND STORAGE
t i me /cu r r e n t
t i me /cu r r e n t
The se r e lays , when not i n c lu de d as a pa r t of a c on t r ol pa nel,
will be s hi pped i n ca r t ons de s i gned to pr otect t he m aga i n s t damage.
Immediate ly u pon
r e ce i pt
of a
r e lay,
exami ne i t f or
a n y damage
sus t a i ne d i n t r a n s i t.
If i nju r y or damage r e su lt i ng f r om r ou gh
ha n dli n g
i s evi de n t ,
f i le
a
dama ge
c la i m a t
on c e
w i t h t he
tr a n s por tati on
c ompa ny and pr omptly
n ot i f y t he
n e a r e s t Ge ne r a l
Ele ct r i c Sale s Office .
Rea s onable ca re s hould be exe r c i sed i n unpa c ki ng t he r e la y i n
or de r
t ha t
none
of
the
pa r ts
a r e
i n ju r e d n or
the
a dju s t me n t s
dis tu r be d.
If the r e lays a r e not t o be ins talled i mme di a t eiy, t he y s hould be
s tor e d i n t he ir
or i gi nal ca r t ons in a place t ha t i s f r e e f r om
mois t u r e, dus t , a n d metalli c chi ps .
For e i gn ma t te r c olle c te d on t he
outs i de , of t he case ma y f i nd i t s way i n s i de when t he c ove r
i s
r emove d a nd cause t r ouble in the ope r a ti on of t he r e la y.
ACCEPTANCE TESTS
Imme diate ly
u pon
r e ce i pt
of
t he
r e la y,
a n
INSPECTION
AND
ACCEPTANCE TEST
s hould be made to make s u r e t ha t n o da mage has bee n
sustained in shipment and that the
r e lay calibr a t i on s have n ot be e n
dis tur be d.
If t he examinati on o r t es t i ndi cates that r eadjustment i s
nece s s a r y, r e f e r t o the secti on on
SERVICING.
The se tes ts may be pe r f or med as pa r t of t he i ns ta llation or a s
acceptance t e s ts , a t the dis c r e t ion of t he u se r .
Since
mos t
ope r ati ng companie s use
di f f e r e n t
pr oc e du r es
f or
acceptance a n d f or i ns t a llati on te sts, the f ollowing s e c t i on i nc lu de s
a ll a ppli cable te sts t ha t may be pe r f or me d on t hese r e la ys .
VISUAL INSPECTION
C he c k the name pla te s ta mping to make s u r e t ha t t he mode l n u mbe r
and r a t i ng of the r elay agree wi th the r e qu i s i t ion.
Remove t he r e lay f r om its case and check t ha t t he r e a r e no br oken
or c r a cke d molded pa r t s or ot he r s i gns of phys ica l da mage , a n d t ha t
all t he s c r ews a r e t i ght .
10
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