GEK-86105
STANDARD INSTANTANEOUS UNIT
The standard instantaneous unit is designed to use one of several coil s.
Tabl e IVa
l ists the pickup range, continuous current ratings and short time rating of each of
these coil s.
The current-closing rating of the contacts is
30
amperes for vol tages not exceed ing
250
vol ts.
TABLE IVa
STANDARD INSTANTANEOUS UNIT CO IL RATINGS
P ICKUP
CONT INUOUS
SHORT T IME
RANGE
CURRENT
(
ONE SECOND
)
RATING
0.5
-
2
0. 75
12
1
4
1.5
25
2
8
3.0
51
4
16
6.0
127
10
40
15.0
205
20
80
30.0
32
6
40
- 160
60.0
326
For forms
51
and up, the s tandard instantaneous unit has the foll owing ratings,
l isted in Table IVb:
TABLE IVb
STANDARD INSTANTANEOUS UNIT COIL RATINGS - FORMS
51
AND UP
SER IES OR
RANGE
PARALLEL
0. 5
-
4.0
0.5 -
2.0
Serie s
1.0-
4.00
Para
11
e
1
2.0 -
16.0
2.0 -
8.0
Serie s
4.0 -
16.0
Parallel
10.0 -
80.0
10.0 -
40.0
Series
20.0 -
80.0
P
ar
a
l
l e
l
20.0 - 160.0
20.0 -
80.0
Series
40.0 - 160.0
Paral lel
**Higher currents
(I)
may be appl ied for
in accordance with the formul a:
I
=I
K
T
5
CONTINUOUS
0.75
1.5
3.0
6.0
15.0
25.0
25.0
25.0
shorter l engths
RATINGS
ONE
SECOND**
2
5
.0
50.0
130.0
260.0
400.0
600.0
600.0
600.0
of time
(T)
K
=
constant
www
. ElectricalPartManuals
. com
