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I m med i atel y u pon recei pt of the rel a y an IN SPE CTI ON AND A CCE PTAN CE TE ST sh oul d b e
made to mak e su re that n o damage has b een susta i ned i n s h i pment and that the rel ay
cal ib rat i o n s h a ve n ot b ee n d i stu rb ed.
readjustment is necessa ry, refe r to the section on SE RV ICING.
These tests may b e perfo rmed as accepta nce tests or as part of the i nstall ati on tests, at the
d i scretion of the u se r. Since most ope rating compan ies use d i fferent p rocedu res fo r
acceptan ce and for i nstall ation tests, the foll ow i n g section i n clud es all a p pl i cabl e tests that
may b e performed on these rel ays.
VISUA L IN SPE CTION
Check th e n a me pl ate to mak e su re that the model nu mb er and rati n g of the rel a y a g ree
with the requ isition.
Remove the rel a y from its case and check that there a re no b rok e n o r crack ed p a rts o r a n y
oth e r si g n s o f p h ysical d a mage.
MECH AN ICAL IN SPE CTION
1.
The re should b e no noticeabl e friction w hen th e d isk is rotated slowly cl ock w ise.
The di sk should retu rn b y itself to its rest position.
M ake su re the control spri n g is not deformed, nor its convolutions ta n gl ed o r
2.
tou c h i n g each oth er.
3.
The armatu re and contacts of th e seal -i n u n it, as w ell as t h e a rm atu re a n d
contacts o f the i n sta nta n eou s u n it, sh ould move freel y w h en operated b y h a n d;
th e re sh ould b e at l east 1/64-inch w i pe on the seal- i n and the i n sta nta n e ou s
contac ts.
4.
T h e ta rgets i n the seal- i n u n it and i n the i nsta nta n eou s u n it must come i nto v i ew
a n d l atch w hen the a rmatu res a re o pe rated b y hand, and should u nl atch w he n
the ta rget rel ease button is o perated.
5.
M ak e su re that the b rush es and sh o rti ng b a rs ag ree w ith the i nternal -con n ecti o n s
d ia g ram.
S h ould there b e a need to tig hten any screws, to p revent stri p p i n g , D O
CAUTION:
N OT OVE R TIGHTEN .
D RAW OU T RE L AY TE STING
I FC rel ays may b e tested w ithout removi ng them from the panel b y usi n g e i t h e r t h e
1 2 X CA2 8A 1 o r 1 2 X CA 11 A 1 test p rob es. T h e test prob es mak e con n ections t o b oth t h e
rel ay a n d the ex te rnal ci rcu itry, w h i ch p ro v i d e s max i mu m fl ex ib il ity b u t requ i res
reaso n able ca re since a CT shorti n g ju m per is necessary w h en testing th e rel ay. The test
p rob es a re d i fferent i n the nu mb er of con necti ons that ca n b e mad e. The 1 2 X CA2 8A 1 has
a full compl ement of 2 8 con nections and the 1 2 XCA 11 A 1 h as fou r. Refe r to i nstru ction
b ook GEK -49803 for additional i n formation.
GEK-49950
ACCEPTANCE TESTS
I f t h e ex a m i n atio n o r test i n d i cates t h at
1 0
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