Specifications
Core Software Operation
ADDvantage-32 PLUS ● AC to DC Power Converter
3-46
AFM CT Ratio/Burden Resistor using Avtron stock CT's and “standard” burden values
Goal is to scale burden for 0.667 V @ FLA or 2.0V at 300% FLA (IOC trip)
600:1 CT p/n A18751
Enter
Pick &
CT
Actual
Calc.
Drive
CT
Enter
Scale
IOC @
300%
FLA
Actual
Burden
Burden
FLA (DC)
Ratio
Burden
(A/Volt)
2 VDC
IOC
IOC
W @
W @
X061
(XXXX:1)
(Ohms)
X062
(ADC)
(ADC)
(%)
100 %
300 %
100
600
4
150
300
300
300%
0.11
1.00
150
600
2.5
240
480
450
320%
0.16
1.41
200
600
2
300
600
600
300%
0.22
2.00
250
600
2
300
600
750
240%
0.35
3.12
300
600
1
600
1200
900
400%
0.25
2.25
2500:1 CT p/n A18750
Enter
Pick &
CT
Actual
Calc.
Drive
CT
Enter
Scale
IOC @
300%
FLA
Actual
Burden
Burden
FLA (DC)
Ratio
Burden
(A/Volt)
2 VDC
IOC
IOC
W @
W @
X061
(XXXX:1)
(Ohms)
X062
(ADC)
(ADC)
(%)
100 %
300 %
200
2500
8
312
625
600
312%
0.05
0.46
300
2500
5
500
1000
900
333%
0.07
0.65
400
2500
4
625
1250
1200
312%
0.10
0.92
500
2500
3
833
1667
1500
333%
0.12
1.08
600
2500
2.5
1000
2000
1800
333%
0.14
1.30
700
2500
2.5
1000
2000
2100
286%
0.20
1.76
800
2500
2
1250
2500
2400
312%
0.20
1.84
4000:1 CT p/n A19489
Enter
Pick &
CT
Actual
Calc.
Drive
CT
Enter
Scale
IOC @
300%
FLA
Actual
Burden
Burden
FLA (DC)
Ratio
Burden
(A/Volt)
2 VDC
IOC
IOC
W @
W @
X061
(XXXX:1)
(Ohms)
X062
(ADC)
(ADC)
(%)
100 %
300 %
300
4000
9
444
889
900
296%
0.05
0.46
350
4000
8
500
1000
1050
286%
0.06
0.55
400
4000
7
571
1143
1200
286%
0.07
0.63
500
4000
5
800
1600
1500
320%
0.08
0.70
600
4000
4
1000
2000
1800
333%
0.09
0.81
700
4000
4
1000
2000
2100
286%
0.12
1.10
800
4000
3
1333
2667
2400
333%
0.12
1.08
900
4000
3
1333
2667
2700
296%
0.15
1.37
1000
4000
2.5
1600
3200
3000
320%
0.16
1.41
1100
4000
2.5
1600
3200
3300
291%
0.19
1.70
1200
4000
2
2000
4000
3600
333%
0.18
1.62
1300
4000
2
2000
4000
3900
308%
0.21
1.90
1400
4000
2
2000
4000
4200
286%
0.24
2.20
1500
4000
2
2000
4000
4500
267%
0.28
2.53
Notes:
1) X062=CT ratio/R burden
2) Actual IOC=2 VDC * X062
3) standard burdens are 9,8,7,6,5,4.5,4,3.5,3,2.5,2,& 1 Ohm--ref D27498-X Cur Fdbk Mod