Characteristics - GE IACS3A Instructions Manual

The in s ta n tane ous unit burdens a re lis ted in Ta bl e X.
RANGE
tCON- MIN.
60 HZ
NEC- TAP
RELAYS
ONLY TIONS
AMPS
(AMPS)
0.5-4.0 LOW 0.5
HIGH 1.0
2.0-16.0 LOW 2.0
HIGH 4.0
10.0-80.0 LOW 10.0
HIGH 20.0
20.0-160.0 LOW 20.0
HIGH 40.0
RANGE
50 HZ tCON- MIN.
RELAYS NEC- TAP
ONLY TIONS AMPS
(AMPS)
0.5-4.0 LOW 0.5
HIGH
1.0
2.0-16.0 LOW 2.0
HIGH 4.0
LOW
10.0-80.0 10.0
HIGH 20.0
20.0-160.0 LOW 20.0
HIGH 40.0
t
See in t e rnal-c onnec t ions dia gra m for a dd itional informa t i on
P ickup of t h e s e
c los e the c on t a cts from the
of t he IAC53 rela y s is wit h in
The s e ttin g of the
unit re quire s to
pred e t e rmined va lue.
s e t a t ze r o. When
ma xi mum dis tance
s e tt in g. The unit
c urre n t .
GEK-34054
TABLE X
BURDENS AT MIN.
PICKUP
R
Jx
OHMS OHMS OHMS
12.7 11.5 17.1
3.18 2.86 4.28
0.76 0.72 1.05
0.189 0.180 0.261
0.051
0.042 0.029
0.010 0.007 0.013
0.017
0.015 0.008
0.004 0.002 0.004
BURDENS AT MIN.
PICKUP
R
Jx
OHMS OHMS OHMS
9.35 14.30
10.6
2.65 2.38 3.57
0.59 0.875
0.64
0.157 0.15 0.22
0.035 0.024 0.042
0.008 0.006 0.101
0.0125 0.007 0.014
0.0027 0.0013
LOW t wo w�nd1n gs c onnected 1n
=
HIGH
t wo win dings c onne c te d in pa rallel.
=

CHARACTERISTICS

relays is
0.5 time -dia l positi on .
3%
t ime d ia l d e termin e s
c los e its c on t a c t s
The c on t a cts a re jus t
t h e dia l is
to c l os e the c on ta c t s ;
80%
re s e t s a t
BURDENS IN
OHMS (Z)
TIMES PICKUP
l
3 10 20
9.6 8.7 8.2
2.40 2.18 2.04
0.59 0.53 0.50
0.147 0.133 0.125
0.029 0.026 0.024
0.007 0.007 0.006
0.010 0.009 0.008
0.002 0.002 0.002
BURDENS IN
OHMS (Z)
TIMES PICKUP
z
3 10
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
ser1es.
defined a s the
of the t a p value .
the
wh en t h e
c los ed
s e t at 10 , t h e d is k mus t
this give s
of the minimum
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
20 IMPEDANCE AT MIN.
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
c urre n t required
Th e pic kup va � ue
len g t h of time
c ur ren t rea c h e s
wh e n the d ia l
t ra ve l t h e
t h e maximum t ime
c l os in g va l ue
to
t h e
the
is
of