GEK-49848A
I NSTANTANEO US OVERCURRENT UN I T ( DI RE CTI ONALLY CONTROLLED )
Ranges and rati n gs of the I O C u n i ts, rel ay te rmi n al s 2 and 3, are s hown i n
Tabl e 5.
The o perat i ng co i l s ha ve dual rati ngs obtai ned by s eri es or paral l el
connecti o ns.
TABLE 5
CONT INUOUS AND ONE S E COND RATINGS OF D I R E CT I ONALLY CONTROLLED I OC UNIT
Total
P i cku p
Con t i nuous
One Second
Range
Connecti on s
Range
Rati ng
Rati ng
( Amps )
( Amps )
( Amps )
( Amps )
2 - 1 6
Seri es
2 -8
5.0
200
Paral l el
4 - 1 6
6.5
2 60
1 0 -80
Ser i es
1 0-40
9.0
220
Pa ral l el
20-80
1 5.0
2 60
D I R E CTI ONAL UNI T
The d i rect i onal uni t o perati ng coi l , rel ay termi nal s 5 a n d 6, has a s i x ampere
con ti n uo us ra ti ng and a 200 ampere one second rati ng.
The po te n ti al pol a ri zi ng
c i rcu i t, termi nal s 7 and 8, i s conti nuo us l y rated.
I NSTANTANEOUS UN I T ( NON DI RE CTI ONALLY
The i nstantaneo us u n i t coi l i s ta p ped for o perat i o n on ei ther one of two ranges
( H or L). Sel ecti on of the h i gh or l ow range i s determi ned by the pos i ti on of l eads
T a n d E at te rmi nal 1 5.
See Tabl e 6 and the a p pl i cabl e i ntern al connect i o ns
re ferenced i n Tabl e 1. For the H ran ge, connect
1
ead T to termi nal 1 5 and
1
ead E to
the a u xi l i ary te rmi n al that i s mounted on te rmi n al 1 5. Fo r range L, reverse l ea d s T
and E.
TABLE 6
CONTINUOUS AND ONE S E COND RAT INGS OF NON-D I RE CTI ONALLY CONTROLLED I O C UNIT
One
I nstantaneo us
Range
**
Con t i nuo us
S econd
U n i t ( Amps )
Range
Rat i ng
Rati ng
( Amps )
( Amps )
( Amps )
6 - 1 50
L
6 - 30
1 0.2
2 60
H
30 - 150
1 9.6
** The range 1s a ppro x1mate, wh1ch mean s that 6 -30, 30 - 1 50 may be 6 -28, 28-150.
There wi l l al ways be at l east one ampere overl a p between the ma xi mum L setti ng
and the mi ni mum H setti ng. Whenever pos s i bl e, al ways s el ect the h i gher range,
s i nce i t h as the hi gher conti n uo us ra ti ng.
TARGET AND SEAL- I N UNI TS
The ra ti ng and i mpeda n ce o f the s eal - i n u n i t for the 0.2 and 2 a mpere ta ps a re
gi ven i n Tabl e 7 . The ta p setti ng used wi l l de pend on the c urrent drawn by the tri p
coi
1
•
7
www
. ElectricalPartManuals
. com