Characteristics - GE IAC Series Instruction Booklet

The i nstantaneous un i t burdens are l i sted i n Table X.
RANGE
60 HZ tCON- MIN.
RELAYS NEC- TAP
ONLY TIONS AMPS
(AMPS)
0.5-4.0 LOW 0.5
HIGH
2.0
2.0- 16.0 LOW
HIGH 4.0
10.0-80.0 LOW
HIGH 20.0
20.0- 160.0 LOW 20.0
HIGH 40.0
RANGE
MIN.
50 HZ tCON-
NEC- TAP
RELAYS
ONLY TIONS AMPS
(AMPS)
0.5
0.5-4.0 LOW
HIGH 1.0
2.0
2.0- 16.0 LOW
HIGH 4.0
10.0-80.0 LOW 10.0
HIGH 20.0
20.0-160.0 LOW 20.0
40.0
HIGH
t LOW
See i nternal -connecti ons d i agram for add i t i onal i nformat i on
P i ckup o f these
c l os e the contacts from the
of the IAC53 rel ays is w i th i n
The sett i ng of the t i me d i a l
un i t requ i res to
predeterm i ned val ue.
set at zero. When the d i a l
max i mum d i s tance to c l ose the contacts;
sett i ng. The un it
current.
GEK-34054
TABLE X
BURDENS AT MIN.
PICKUP
J x
R
OHMS
OHMS
12.7 11.5 17.1
1.0 3.18 2.86
0.76 0.72
0.189 0.180
10.0 0.042 0.029
0.010 0.007 0.013
0.015 0.008
0.004 0.002
BURDENS AT MIN.
PICKUP
R
Jx
OHMS OHMS
10.6 9.35 14.30
2.65 2.38
3.57
0.64 0.59 0.875
0.22
0.157 0.15
0.024 0.042
0.035
0.008 0.006 0.101
0.0125 0.007 0.014
0.0027 0.0013
two w1nd�ngs connected �n ser�es.
=
H IGH two w i nd i ngs connected in paral l el.
=

CHARACTERISTICS

relays i s
0.5
3%
close i ts contacts
The contacts are just cl osed when the d i a l
i s set at 10,
resets at
BURDENS IN
OHMS (Z)
TIMES PICKUP
z
3 10 20
OHMS
9.6
8.7 8.2
4.28 2.40 2.18 2.04
1.05
0.59 0.53 0.50
0.261 0.147 0.133 0.125
0.051
0.029 0.026 0.024
0.007 0.007 0.006
0.017 0.010 0.009 0.008
0.004 0.002 0.002 0.002
BURDENS IN
OHMS (Z)
TIMES PICKUP
z
3
10
OHMS
8.03 7.27
2.00 1.81
0.49 0.441
0.145
0.112
0.024 0.021
0.0054 0.0054 0.046
0.008 0.0074 0.0065
0.003 0.0015 0.0015
def i ned as the
time-d i a l pos i t i on.
o f the tap value.
determines the
when the
the d i s k must trave l
th i s g i ves the maxi mum t i me
80%
of the m i n i mum
9
V.A. AT 5 AMPS
CALCULATED FROM
IMPEDANCE AT MIN.
PICKUP (I2Z)
427.5
107.0
26.25
6.63
1.28
0.33
0.43
0.10
V.A. AT 5 AMPS
CALCULATED FROM
IMPEDANCE AT MIN.
20
PICKUP ( I2Z )
6.86 357.5
1.70 89.25
0.417 21.875
0.105 5.50
0.0197 1.05
0.25
0.35
0.0015
current requ i red
The p i ckup va � ue
l ength of t i me
current reaches
c l os i ng va l ue
to
the
the
i s
the
of