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The back i n g s t r i p s hou l d be so fo rmed t h a t t h e f o r k e d e nd
bea r s aga i ns t
t h e mo l ded s t r i p unde r
adju s tment s
may
t h a t
no mecha n i ca l
conce r n .
W i t h
t e l ephone
c los i ng
con t a c t s
c i r c u i t ope n i ng con t ac t s have a w i pe o f a t l e a s t 0 . 0 0 5 i nc h .
be
c h e c k ed by
i n s e r t i ng a
c a n
b e
c h e c k e d
s t a t iona r y con t a c t
t h e n
b e
ope r a t ed
d e s c r i bed a bove .
E l e c t r i ca l Tes t, Gen e r a l
A l l
a l t e r na t i ng
f r equency .
S i nce
f u ndame n t a l
p l u s
that
a l t e r na t i ng
app l i ed
wave f o r m .
c u r r en t
r e l a y s
o r vo l t a g e .
D i e l e c t r i c T e s t s
1 .
In t r od u c t ion
The
s u r g e
r e l ay
do
no t
have
t h e r e fo r e,
c a u t ion mu s t be exe r c i s e d when h i po t t i ng to avo i d
t h e s e capac i to r s .
I t
i s
r ecommended tha t hipo t
t h e
r e l a y i n i t s ca s e .
w i t h
o t he r
appa r a t u s
Te r m i n a l 1 0
( s u r g e g round ) mu s t be r emoved .
The h i po t
t e s t
f o r
new
r e la y s o r
New r e l a y s a r e d e f i ned a s those wh i ch have not been i n s e r v i c e,
a r e not
mo r e
than one y e a r o l d
h a v e b e e n s u i t a b l y s to r ed
app l i ca t i o n o f the t e s t vol ta ge for bot h o l d and new r e l a y s s hou l d b y
6 0 s e conds .
2 .
( a )
Common Mode H i pot Te s t s
Tempo r a r y
t e rm i na l s,
t h e n
be
app l i ed
ca s e .
GEK-49861
a f f e c t
the
Se i sm i c
adju s tme n t s
r e lays
i n
s hou l d
have
a
f e e l e r
by
ob s e rv i ng
b e f o r e pa r t i ng
b y
hand
and
c u r r e n t
non - s i nu so i da l
ha rmon i cs
o f
cu r r en t
dev i c e s
The r e fo r e,
i t
i s
e s s e n t i a l
capa c i to r s
( C l -C9
vo l t age
r a t i ng s
If
the r e l a y i s
i n
a n
equ i pment,
vol t age s hou ld be 1 5 0 0 vol t s
1 1 2 5
vol t s
to p r ev e n t d e t e r i o r a t ion .
conne c t ions
i nc l ud i ng
T ermi nal
b e t w e e n
the a rma t u r e .
F r ag i l i t y
be
made
i f
s e i sm i c
the
de-ene r g i z ed
gap o f
a t
l ea s t
gage
between
the
amo u n t
o f
the con t a c t s .
the
gap
and
ope r a t e d
d ev i c e s
waveforms
the
f undame n t a l
( r e l ays )
w i l l
i n o r de r
to p rope r ly
to u s e a
s i ne wave
a nd
Cl 5 - C 2 0 )
to
w i t h s t a nd
t e s t s
be
pe rfo r med on
to b e h i po t
a l l
e x t e r na l
rms,
5 0 o r
6 0
he r t z
f rom the d a t e o f
( Al l t e r m i na l s t o ca s e ) :
shou l d
be
made
1 0,
tog e t h e r .
t h i s
common
con n e c t ion
18
S i n c e mechan i ca l
Level,
i t
i s
capa b i l i ty
pos i t i on
a l l
0 . 0 1 5
i nc h
the
con t ac t s
and
d e f l e c t i o n
The a rma t u r e
w i p e
aga i n
c h e c k e d
a r e
a f f e c t ed
can
be
a na l y z ed
f r equen cy,
i t
be
a f f e c t ed
t e s t
a l t e r na t i ng
sou r ce o f
used
in
the
t ype
AC
hi pot
dama g i ng
b e n c h w i t h
a
t e s t ed
conne c t i o n s
rms,
5 0 o r
6 0
f o r
o t h e r
s h i pment,
and wh i ch
The d u r a t i o n o f
t o
t i e
a l l
H i po t
vol t a g e
and
t h e
( f r on t )
a dv i s ed
i s
o f
c i r cu i t
a n d
a l l
Gap may
w i pe
o n
t h e
s ho u l d
a s
b y
a s
a
f o l lows
by
t h e
c u r r e n t
SLY
vol t a g e;
t og e t h e r
to
h e r t z
r e la y s .
wh i ch
r e l a y
c a n
r e l a y
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