Installation Procedure - GE SBC23A Instructions Manual

2. Keep sw i tch ( S1 ) cl o sed.
Tu rn th e A/0 po te nti omete r ful l y cl ockw i s e a nd t h e B/0 po te n t i omete r fu l l y
cou n tercl ockw i se.
B FT rel ay ope ra tes a fte r abo u t o ne-ha l f seco nd del ay when te s t curre n t a l o n e i s
app l i ed. Cl o se the
i mmed i a te l y wh en the te s t cu r re n t i s appl i ed.
Pl ace the 11AND2 11 l i nk i n the
opera te s w i th abo u t 1/2 second del ay wh en t h e te s t cu rre n t i s appl i ed a nd t h e
1 1AUX 11 con tact i s open.
Set t h e A/0 a nd B/0 t i me d el ays as requ i re d fo r the sys tem ope ra t i on.
Pl ace the 11AND2 11 l i nk i n the requ i red mode of opera t i on.
INTRODU CTION
The l oca t i on s houl d be cl e a n a nd d ry, free from d u s t a nd exce s s i v e v i bra t i o n a nd
we l l l i g h ted to faci l i ta te i n spect i o n and te s t i n g.
The rel ay s h ou l d be mou n ted on a ve rt i cal s u r face.
1 .
s h own i n F i gure
The i n te rnal co nnect i on d i a g ra ms fo r the re l ays a re s hown i n Fi g u res 2 3, 24 a nd 2 5 .
Typi ca l w i r i n g d i a g rams a re g i v e n i n F i g u res 2, 3, a n d 4,
One o f the mou n t i ng s tuds o r screws s hou l d be pe rma n e n t l y co nn ecte d to s u rge ground
by a con ductor not l e s s t h a n No. 12 B & S gage copper w i re or i ts equ i val e n t.
The rel ay may be tes ted w i thou t remo v i n g i t from t h e pa nel by u s i n g a 12XLA13A test
pl u g. Th i s pl ug make s co n n ect i on s o n l y w i th the r e l ay, a n d does not d i s tu rb a ny
s ho rt i ng ba rs i n the case.
a l thou gh th i s te st pl ug a l l ows g reater te s t i ng
s h o r t i n g j umpe rs a nd t h e exe rc i se o f g re a te r ca re, s i nce con n ec t i o n s a re ma d e to
both the rel ay and th e external ci rcu i try.
pl u g s may b e obta i n ed from GE I - 25 372.
Al l a l terna t i n g-cu rren t- ope ra ted d ev i ces a re a ffected by fre que ncy.
s i n u s o i da l wave forms ca n be ana l yzed as a fundame n ta l frequ ency pl u s h a rmo n i cs of
t h e fu ndamen tal freque ncy, i t fo l l ows that a l te rn a t i n g cu rre n t d ev i ce s ( re l ays ) w i l l
be a ffected by the app l i ed wa ve fo rm.
cu rre n t re l ays prope rl y i t
vol tage.
When Hipotti ng the SBC , remove all external w1r1ng from Tenninal
not Hi pot Termi nal
600 VDC and the hipot voltage may damage the capacitors.
GEK-45464
Pl ace the 11AND2 11 l i nk i n the 11IN 11 po s i t i o n.
11AUX 11 co n tact and ch eck tha t
11 0UT 11 po s i t i o n and check tha t the B FT rel ay
I NSTALLATI ON PROCEDURE
O f cou rse t h e 12XLA12A test pl u g may al s o be u sed;
i s e s sen t i a l
CAUTI ON
10. The reason is that capaci tors Cl -Cl 2 are rated for
2 5
the
The o u tl i n e a nd pa nel d i a g ram i s
fl ex i b i l i ty,
Add i t i o n a l i n fo rma t i on on the XLA tes t
Th e re fo re, i n order to te s t a l terna t i ng
to u s e a s i ne wa ve o f curre n t a nd/o r
Ch eck tha t the
B FT rel ay ope ra tes
i t a l so requ i re s CT
S i nce non­
1 0. Do