GEK-34054
movi ng the magnet towar d the d i s k shaft decreases the ti me , whi le
moving i t away i n c r ea s e s the ti me.
Test
Set the r elay at the
0.5
ti me-dia l pos i tion and 2. 0 a mp tap.
Us i ng the tes t connecti on s of Fi gure 1 4, the ma i n un i t s hould c lose
i ts
c ontacts
within
±2%
of tap va lue
c urrent.
Al l other tap
pos i ti ons should pi ck up at tap va lue ±5% of tap va lue.
Ti me Test
*
Se t the r e lay at the No.
5
ti me-dial pos i tion and
2.0
a mp tap.
Us i ng the te st conne cti ons of Fi gure 14, apply 5 ti mes ta p cur re n t
( 1 0. 0 amp) to the r e lay.
The r e lay shoul d ope r a te in 1. 31 s econds
±0. 07 s e c ond.
At
2
ti mes tap cur r en t a nd 10 ti mes ta p cur r en t, the
o pe r ati ng time sh ould ag r e e with the ti me -cur ve va l ue ±7 %.
I NSTANTANEOUS UNI T
Make sure that the i nstantaneous uni t i s wired for the range i n
wh i ch i t i s to ope r ate (s e e Inte r nal-Connecti o n s -Diagra m Figures 5 or
7 ) a nd connected as i n di cated in Tes t-Ci rcui t Figure 14.
Whe n e ve r
pos s i ble , u s e the hi gher range, s i nc e the h i gher range ha s a hi g h e r
conti n uous rati n g .
the Ins tantaneous Un it
Loosen the locknut and tu r n the pole pi ece towa r d the des i r ed
s e tti ng.
See Fi g ure 2.
Tur n i ng the pole piece up inc re a s e s the
pi c kup; tu r n i ng the pole pi ece down decrea s e s the pi ckup. B ring up
the c ur r e nt s l owly un ti l the un it pi cks up.
I t may be neces s a ry to
repea t this ope r a tion unti l the des i red pi c kup value i s obta i ned.
Once the desired pi ckup va lue i s r ea c hed, ti ghten the loc kn ut.
CAUTION
The instantaneous un
i
t is rated
1.5 times
m�n�mum
pickup.
Do
not
leave
the
test current
on too
long, as it
may
damage the unit.
Te st
Wi th
the
un i t connected
for
h i gh - r a ng e ope r ati on
( pa r a lle l
connecti on s ) and the ta r get in the "Down " pos ition, che c k the pickup
at the maximum c a li br a tion ma r k; the pi c kup should be wi thi n the
li mi ts i n Table XI.
*I ndi c ate s re vision
13
www
. ElectricalPartManuals
. com
