and IPICKUP is the PCD minimum trip setting. Table 2. ANSI Curves. Value of Constants. ANSI Curve. A. B. C. P. D. E. Extremely Inverse. 6.407. 0.025. 1. 2.0. 3. 0.998. Very Inverse. 2.855. 0.0712 1 ... PCD has the option for using the above formula for reset time or to set the reset time to instantaneous. By default, PCD is set ...
ABB PCD Control Protection Curves Note on Applying Protection Curves: This document gives the control response time for all curves available in the PCD. The device interrupting times must be added to all curves to obtain maximum clearing time, per the following Table 1: Table 1. Device Interrupting Times Product
Maximum Interrupting Time
ABB VR-3S
2.5 cycles (40 ms)
ABB ESVA Recloser
3.0 cycles (48 ms)
ABB Type R & R Mag Breaker
3.0 cycles (48 ms)
ANSI Curves The ANSI curves for PCD are defined by the following equations and table of coefficients:
14n − 5 A Trip Time = P + B × M −1 9 D 14n − 5 Reset Time = × 1 − EM 9 I where M = INPUT I PICKUP
and IPICKUP is the PCD minimum trip setting. Table 2. ANSI Curves ANSI Curve
Value of Constants C P
A
B
Extremely Inverse
6.407
0.025
1
2.0
3
0.998
Very Inverse
2.855
0.0712
1
2.0
1.346
0.998
Inverse
0.0086
0.0185
1
0.02
0.46
0.998
Short Time Inverse
0.00172
0.0037
1
0.02
0.092
0.998
Short Time Extremely Inverse
1.281
0.005
1
2.0
0.6
0.998
-
-
-
-
Definite Time
-
D
E
-
Long Time Extremely Inverse
64.07
0.250
1
2.0
30
0.998
Long Time Very Inverse
28.55
0.712
1
2.0
13.46
0.998
0.086
0.185
1
0.02
4.6
0.998
Standard Instantaneous
-
-
-
-
-
-
Inverse Instantaneous
-
-
-
-
-
-
Long Time Inverse
PCD has the option for using the above formula for reset time or to set the reset time to instantaneous. By default, PCD is set to instantaneous reset time.
Figure 1. ANSI Definite Time Curve 300
24000
200
12000
100
6000
70
4200
50
3000
40
2400
30
1800
20
1200
10
600
7
420
5
300
4
240
3
180
2
120
1
60 42
0.7
ADJUSTABLE 0.5
30
0.4
24
0.3
18 15
0.2
12
0.1
10 9 8 7 6 5
0.07
4
0.05
3
0.04 2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
Time in Seconds
PCD ANSI Definite Time
Figure 2. ANSI Extremely Inverse Curve 300
24000
200
12000
100
6000
70
4200
50
3000
40
2400
30
1800
20
1200
10
600
7
420
5
300
4
240
3
180
2
120
1
60
0.7
42
n=10
0.5
30
n=8
0.4
24
n=6
18
0.3
15
n=4
12
0.2 n=3
10 9 8 7 6
n=2
0.1
5 0.07
4 3
0.05 n=1
0.04
2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
Time in Seconds
PCD ANSI Extremely Inverse
Figure 3. ANSI Inverse Curve 300
24000
200
12000
100
6000
70
4200
50
3000
40
2400
30
1800
20
1200
10
600
7
420
5
300
4
240
3
180 n=10
2
120
n=8 n=6
1
60
n=4
0.7
42
n=3
30
0.5 n=2
0.4
24 18
0.3
15 12
0.2
10 9 8 7 6
n=1
0.1
5 0.07
4
0.05
3
0.04 2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
Time in Seconds
PCD ANSI Inverse
Figure 4. ANSI Inverse Instantaneous Curve 300
24000
200
12000
100
6000
70
4200
50
3000
40
2400
30
1800
20
1200
10
600
7
420
5
300
4
240
3
180
2
120
1
60
0.7
42 30
0.5
n=10 n=9 n=8 n=7 n=6
0.4 0.3
24 18 15
n=5
0.2
12
n=4
10 9 8 7 6
n=3 0.1
n=2
5
0.07
4 3
n=1
0.05 0.04
2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
Time in Seconds
PCD ANSI Inverse Instantaneous
Figure 5. ANSI Long Time Extremely Inverse Curve 300
24000
200
12000
PCD ANSI Long Time Extremely Inverse 100
6000
70
4200
50
3000
40
2400
30
1800
20
1200
10
600 420
n=10
5
300
n=8
4
240
n=6
180
3 n=4
120
2 n=3
n=2
1
60 42
0.7
30
0.5 n=1
0.4
24 18
0.3
15 0.2
12
0.1
10 9 8 7 6 5
0.07
4
0.05
3
0.04 2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
Time in Seconds
7
Figure 6. ANSI Long Time Inverse Curve 300
24000
200
12000
PCD ANSI Long Time Inverse 100
6000
70
4200
50
3000
40
2400
30
1800 n=10
20
1200
n=8 n=6
7
Time in Seconds
600
n=4
420
n=3
300
5 n=2
4
240
3
180
2
120 n=1
1
60
0.7
42
0.5
30
0.4
24
0.3
18 15
0.2
12
0.1
10 9 8 7 6 5
0.07
4
0.05
3
0.04 2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
10
Figure 7. ANSI Long Time Very Inverse Curve 300
24000
200
12000
PCD ANSI Long Time Very Inverse 100
6000
70
4200
50
3000
40
2400
30
1800
20
1200
n=10
7
Time in Seconds
600
n=8
420
n=6
5
300
n=4
4
240
n=3
3
180
n=2
2
120
60
1 n=1
0.7
42
0.5
30
0.4
24
0.3
18 15
0.2
12
0.1
10 9 8 7 6 5
0.07
4
0.05
3
0.04 2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
10
Figure 8. ANSI Short Time Extremely Inverse Curve 300
24000
200
12000
100
6000
70
4200
50
3000
40
2400
30
1800
20
1200
10
600
7
420
5
300
4
240
3
180
2
120
1
60
0.7
42
0.5
30
0.4
24
0.3
18 15
0.2
12
0.1
n=8
10 9 8 7 6
0.07
n=6
n=10
5
0.05
4 3
n=4 n=1
0.04
n=2
n=3 2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
Time in Seconds
PCD ANSI Short Time Extremely Inverse
Figure 9. ANSI Short Time Inverse Curve 300
24000
200
12000
100
6000
70
4200
50
3000
40
2400
30
1800
20
1200
10
600
7
420
5
300
4
240
3
180
2
120
1
60
0.7
42
0.5
n=10
0.4
n=8
0.3
30 24 18
n=6
0.2
15 12
n=4 n=3
10 9 8 7 6
n=2
5
0.1 0.07
4
0.05
3
0.04
n=1
2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
Time in Seconds
PCD ANSI Short Time Inverse
Figure 10. ANSI Standard Instantaneous Curve 300
24000
200
12000
100
6000
70
4200
50
3000
40
2400
30
1800
20
1200
10
600
7
420
5
300
4
240
3
180
2
120
1
60
0.7
42
0.5
30
0.4
24
0.3
18 15
0.2
12
0.1
10 9 8 7 6 5
0.07
4
0.05
3
0.04 2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
Time in Seconds
PCD ANSI Standard Instantaneous
Figure 11. ANSI Very Inverse Curve 300
24000
200
12000
100
6000
70
4200
50
3000
40
2400
30
1800
20
1200
10
600
7
420
5
300
4
240
3
180
2
120
n=10 1
60
n=8
0.7
42
n=6
0.5
30
n=4
0.4
24
n=3
0.3
18 15
n=2
0.2
12 10 9 8 7 6
0.1
5
n=1
0.07
4 3
0.05 0.04
2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
Time in Seconds
PCD ANSI Very Inverse
IEC Curves The IEC curves that follow are defined by the following equation and table of coefficients. K Trip Time = P − 1 × (TimeDial ) M I where M = INPUT I PICKUP
and IPICKUP is the PCD setting. The reset time for all IEC curves in PCD is instantaneous. Table 3. IEC Curves K
P
Extremely Inverse
80.0
2.0
Very Inverse
13.5
1.0
0.14
0.02
120.0
1.0
IEC Curve
Inverse Long Time Inverse Definite Time
5
-
-
Figure 12. IEC Extremely Inverse Curve 300
15000
200
10000
100
5000
70
3500
50
2500
40
2000
30
1500
20
1000
10
500
7
350
5
250
4
200
3
150
2
100
1
50
0.7
35
0.5
25
0.4
20
0.3
15 12 n=1.00
0.2
10 9 8 7 6
n=.80 n=.60
5 4.5 4 3.5 3
0.1 n=.40 0.07
2.5
0.05 n=.05
0.04
n=.10
n=.20
2 1.5
0.03 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
1
Time in Cycles at 50Hz
Time in Seconds
PCD IEC Extremely Inverse
Figure 13. IEC Very Inverse Curve 300
15000
200
10000
100
5000
70
3500
50
2500
40
2000
30
1500
20
1000
10
500
7
350
5
250
4
200
3
150
2
100
1
50 n=1.00
0.7
35
n=.80 25
0.5 n=.60
0.4 0.3
20 15
n=.40
12 10 9 8 7 6
0.2 n=.20
5 4.5 4 3.5 3
0.1 n=.10
0.07
2.5
0.05 0.04
2
n=.05
1.5
0.03 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
1
Time in Cycles at 50Hz
Time in Seconds
PCD IEC Very Inverse
Figure 14. IEC Inverse Curve 300
15000
200
10000
100
5000
70
3500
50
2500
40
2000
30
1500
20
1000
10
500
7
350
5
250
4
200
3
150 n=1.00
2
100
n=.80 n=.60
1
50
n=.40
35
0.7 0.5
25
n=.20
0.4
20
0.3
15 12
n=.10
10 9 8 7 6
0.2
n=.05
5 4.5 4 3.5 3
0.1 0.07 0.05
2.5
0.04
2
0.03
1.5
0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
1
Time in Cycles at 50Hz
Time in Seconds
PCD IEC Inverse
Figure 15. IEC Long Time Inverse Curve 300
15000
200
10000
PCD IEC Long Time Inverse 100
5000
70
3500
50
2500
40
2000
30
1500
20
1000
10
500 350
n=1.00
5
n=.80
250
4
n=.60
200 150
3 n=.40
100
2
n=.20 50
1 0.7
35
n=.10
0.5
25
0.4
20 n=.05
0.3
15 12
0.2
10 9 8 7 6
0.1
5 4.5 4 3.5 3
0.07 0.05
2.5
0.04
2
0.03
1.5
0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
1
Time in Cycles at 50Hz
Time in Seconds
7
Figure 16. IEC Definite Time Curve 300
24000
200
12000
100
6000
70
4200
50
3000
40
2400
30
1800
20
1200
10
600
7
420
5
300
4
240
3
180
2
120
1
60 42
0.7
ADJUSTABLE 0.5
30
0.4
24
0.3
18 15
0.2
12
0.1
10 9 8 7 6 5
0.07
4
0.05
3
0.04 2
0.03
1.5 0.02
0.7
1
2
3
4
5
7
10
20
30
40 50
Current in Multiples of Pickup Setting
70
100
200
300
400
Time in Cycles at 60Hz
Time in Seconds
PCD IEC Definite Time
Recloser Curves Table 4 gives the entire set of recloser curves. Of these curves several are defined by the following equation and coefficients given in the table. The remaining curves listed which do not have coefficients and were created with point data. The reset time of all recloser curves is instantaneous. A TripTime = P + B × time dial M −1
ABB Inc. 655 Century Point Lake Mary, FL 32746 U.S.A. For sales & marketing contact your local representative or: Tel: +1-407-732-2000 1-800-929-7947 Fax: +1-407-732-2029 www.abb.com/mediumvoltage
