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DC Res i st ance +10%
Mi n i mum OperatTn g,
up
Carry
Con t i n u o u s (Amps )
Carry 30 Amps for (Seco n ds )
Carry 10 Amps for (Seconds )
uzu
60 Hz
(Ohms )
CONTACTS
The current - c l o s i n g r at i ng o f the i nduct i on u n i t contacts i s 3 0 amperes for
vo l t ages not exceed i n g 250 v o l t s .
t ap r at i ng of the seal - i n u n i t .
PICKUP
When potent i al po l ar i zed, the d i rect i on a l u n i t wi l l pi ck u p at 3. 6 vo l t - amperes
at the maxi mum torque an g l e of 60 degrees l ag (current l ags v o l t age ) .
po l ar i zed,
i t wi l l
po l ar i z i ng co i l s connected i n ser i es .
current and poten t i al po l ar i z at i on i s typi f i ed i n F i g . 10.
The current requ i red to c l o s e the t i me overcurrent u n i t cont acts w i l l be w i thi n
f i ve percent of the t ap s crew sett i n g .
i n stantaneous
o vercurrent
i nd i c ated i n Tabl e 6.
RESET (TIME OVERCURRENT UNIT)
Inverse t i me overcurrent u n i t s reset at 90 percent of the m 1 n 1 mum pi ckup
current, very i nvers e t i me u n i t s at 80 percent , and extreme l y i n verse t i me u n i ts at
85 per cent .
When the r e l ay i s de-energi zed, the t i me requ i red for the d i s k to compl ete l y
reset t o the n umber 10 t i me d i a l pos i t i on i s approxi mat e l y s i x seconds for i nverse
t i me rel ays and 60 seconds for very i nverse t i me and extreme l y i nverse- t i me re l ays .
OP ERATING TIME
The t i me curve for the d i rect i o n a l u n i t i s shown i n F i g . 11.
The t i me curves of the TOC u n i t s are shown i n F i g . 12, 13 and 14, respect i ve l y
for i nver s e- t i me re l ays, very i nvers e-t i me rel ays and extreme l y i n verse- t i me rel ays .
G EK-49849
TABL E 8
SEAL-IN UNIT RATINGS
urn
( + ) 0 ( - ) 40%
The i r curren t-car ry i n g r at i ng i s l i m i ted by the
OP ERATIN G CHARACT ERISTICS
pi ck u p at approximate l y 0. 5 ampere wi th the operat i ng and
The performance of the u n i t w i th s i m u l taneous
u n i t
can
be
TAP
0. 2
2. 0
8. 3
0. 24
0. 2
2. 0
0. 37
2. 3
0. 05
2. 2
0. 45
20
50
0. 6 5
The pi ckup of the d i rect i on a l l y contro l l ed
adju s ted
over
an
9
0. 6
2. 0
0. 78
0. 18
2. 0
0. 6
1. 2
2. 6
0. 5
3. 5
5. 0
30
6. 2
0. 6 5
When current
e i g ht-to-one
range
as
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