GEK-34054
moving the magnet toward the disk shaft decreases the time, while
moving it away increases the time.
Test
Set the relay at the 0. 5 time-dial position and 2. 0 amp tap.
Using the test connections of Figure
14,
the main unit s hould cl ose
its
contacts
within
±2%
of tap
value cu r rent.
All
other
tap
positions should pick up at tap value ±5% of tap value.
Time Test
*
Set the relay at the No. 5 time-dial position and 2. 0 amp tap.
Using the test connections of Figure 14, apply 5 times tap cur rent
( 10. 0 amp) to the relay.
The relay should operate in
1.
3 1 seconds
±0. 0 7 second.
At 2 times tap current and 10 times tap cur rent, the
operating time should agree with the time-cur ve value ± 7 % .
INSTANTANEOUS UNIT
Make sure that the instantaneous unit is wir ed fo r the r ange in
which it is to oper ate (see Internal-Connections-Diag ram Figur es 5 o r
7 ) and connected as indicated in Test-Circuit Figu r e
14.
Whenever
possible, use the higher range, since the higher r ange has a higher
continuous rating.
the Instantaneous Unit
Loosen the locknut and turn the pole piece toward the desired
setting.
See Figu re 2.
Turning the pole piece up incr eases the
pickup; turning the pole piece down decreases the pickup. B r ing up
the current sl owly until the unit picks up.
It may be necessar y to
repeat this operation until the desired pickup value is obtained.
Once the desired pickup value is reached, tighten the l ocknut.
CAUTION
The instantaneous unit is
r ated
1. 5
times m�n�mum pickup.
Do
not
l eave
the test current on too long, as it
may
damage the unit.
Test
With
the
unit
connected
for
high-range
ope r ation
(pa r allel
connections) and the target in the "Down" position, check the pickup
at the maximum calibration mark; the pickup should be within the
limits in Table XI.
* I ndicates revision
13
www
. ElectricalPartManuals
. com
