l .
A
1 1 5
VAC
v a r i a b l e vo l t a g e
t ransf orme r
w i
t
h
a t
l
e
a
s t
3
Amp s ou tpLi t .
2 .
An
amm
e t
e
r
wh i ch w i
1 1
l nd l c D t e
I
t o
3
Amps w i t h
r e a s onab l e
a c c u r a cy .
3 .
An
a i r -core
rea c tor of
3 5
m i
I
l
l
-
h
e
n
r
i
e
s or
m
o
r e
w i t h
a
DC
r es i s ta nce
o f
2 0
o
hm
s
o r
l es s .
A
s
t
a
n
d
a
r
d
1 25
V
D C pa.-.'e r
c i r
c
u
i
t
b re a ke r
s o l e
n o
i
d
t r i p
co i l
(
s u ch
a s
A l l i s - C h a l me rs
N o .
7 1 -200 - 7 45 - 5 0 1 )
may b e
used , a s
rnay
o t he r
s i m i I
a
r co i
l
s .
Howeve r ,
a
re.1c t o r
des i g n e d
for
the
p u r pos e i s
av a i l ab l e ,
a n d i s
a l s o
s u i tab l e for
t
h
e
mo r e a c c u r a t e requ i r emen t s
of
t
i
me
de l a y
t es t i n g .
I t
may
be
o r d e red
a s
- REACTOR ,
7 1 - 1 42 -3 9 5 -50 1 .
A I
l i s -Cha l me r s
can
a
l
s
o
s
u
p
p
l
y a
comp l e t e ,
I n t e g r a t ed and
e as i l y
por ta b l e
tes t
s e t comp r i s i n g
e
s
s
e
n
t
i
a l
l
y
t h e
above equ i pme n t , a s
I l l us t ra ted
i n
F i g u r e
7 C .
Con t a c t t he l oca l A l l i s - C h a l me r s
off i ce
f o r f
u r
t
h
e r
i nf o rma t i on .
Tes t
Th i s
s
e
c t
i
o
n
will
des c r i be
i n
d e ta l
1
t
h
e
s teps t o be ta ken
t o ca r ry
ou t
t he
tes t s .
Tes t s may be
c
o
n
d
uc
t
ed
on
t h e cQn p l e t e c i rcu i t
b reake r ,
e i the r
I n
the
d i s connec t ed cub i c l e
p
o
s
i
t
i
o
n
,
o r
removed
f rom the
CIJ b i c l e .
I t
I s no t
r
e
q
u
i
r
e
d
t o
r emov e o r
d
i s
c
o
n
n
e
c
t
any
pe
rm
a
n
e
n
t
w i
r
i
n g on
the
c i r cu i t
b ie a kc r
as
l ong
as
a n d
con t ro l
c i r c u i ts a re no
t
c
o
n
n
e
c
t
e
d
t o
t h e b r e a ke r .
I t
w i
1 1
u s ua l l y
be
a d v a n t a geous
t o
p
e
r
f o
r
m n o rma l rou t i ne ma i n t enance on
the
c i r c u i t
b
r e a k
e
r
before
tes t i ng t h e s t a t i c
t
r
i
p
d
e
v
i
c
e
.
A l though
t
h
e
fo l l ow i ng des c r i p t i ons
r e l a t e
t o
a
comp l e t e
c
i r
c
u
i
t
b reake r un i t , i t w i I I be
appa ren t t h a t the t es t s can
a l s o be
c a r r i ed
ou t
on
a
s t a t i c
t r i p
de
v
i
c
e
by i t s e l f .
C on n e c t
a
1 00
ohm ,
I wa t t
r e � i s t o r
a c r os s
t e rm i n a l s
1
a nd
8
of
t he
s ta t i c t r i p dev i ce when t h e
c i
r c
u
i
t b r ea ke r t r
i p
p i
ng
dev i ce
(
s ee
F i gure 8)
i s
n o t con n e c t etl
t o
t
h
e s t a t i c
t r i p ,
to
s i mu l a t e
a
l oad
d u r i n g
t h i s t e s t .
- 1 8 -
(
c
(
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