42
Kyle Form 4C Microprocessor-Based Recloser Control Programming Guide
Time–Current Curve Modifiers (cont’d)
Minimum Response Time
The #133 time–current curve can be modified by using a
minimum response time setting as shown in Figure 13. The
available range of programming minimum time settings is 0
through 42 cycles in 1 cycle increments. Refer to Access
Codes 104 and 114 for interrogation and programming.
High-Current Trip
A basic TCC can be modified for high current trip (see Figures
14 and 15). The available range of programmable multipliers
is from 1 through 30 times minimum trip in increments of 1.
High-current trip also includes trip time delay with an available
range of programmable delay times of 1 through 9 cycles in 1
cycle increments. Refer to Access Codes 130 and 134 for
interrogation and programming.
30
20
10
8
6
5
4
3
2
1
.8
.6
.5
.4
.3
.2
0.1
.08
.06
.01
.02
.03
.04
.05
50
60
80
100
200
300
400
500
600
800
1000
2000
3000
4000
5000
6000
8000
10000
20000
30000
40000
50000
CURRENT (percent of minimum trip)
TIME (sec)
TIME [cycles (60 Hz basis)]
0.6
1.2
1.8
2.4
3.0
3.6
4.8
6.0
12
18
24
30
36
48
60
120
180
240
300
360
480
600
1200
1800
High-Current
Trip Le vel (10x)
Trip Time Dela y
in 2 cycles
133
30
20
10
8
6
5
4
3
2
1
.8
.6
.5
.4
.3
.2
0.1
.08
.06
.01
.02
.03
.04
.05
50
60
80
100
200
300
400
500
600
800
1000
2000
3000
4000
5000
6000
8000
10000
20000
30000
40000
50000
CURRENT (percent of minimum trip)
TIME (sec)
TIME [cycles (60 Hz basis)]
0.6
1.2
1.8
2.4
3.0
3.6
4.8
6.0
12
18
24
30
36
48
60
120
180
240
300
360
480
600
1200
1800
6 Cycles
133
Minimum
Response
Time
Figure 13.
TCC modification with Minimum Response Time
(control response time).
Figure 14.
TCC modification with High-Current Trip
(control response time).
Figure 15.
Modified TCC’s with and without the effects of high-current trip and show precedence when more than one
modifier is used.
1) Basic TCC
2) Minimum Response Time (5 cycles)
3) High-Current Trip Time Delay
(Code 133) Response Time (4 Cycles)
4) 2x Multiplier
5) 0.1 Second Contant Time Adder
(6 cycles) Does not add to High-Current Trip Time Delay
1
2
2x Multiplier
10 cycles
4 cycles
4
3
TCC MODIFIERS WITH HIGH-CURRENT TRIP
8 cycles
5 cycles
High-Current Trip
Accessory
4
5
5
16 cycles
15 cycles
1) Basic TCC
2) Minimum Response Time (5 cycles)
3) 2x Multiplier
4) 0.08 sec. Constant Time Adder (5 cycles)
1
2
2x Multiplier
10 cycles
5 cycles
4
3
TCC MODIFIERS WITHOUT HIGH-CURRENT TRIP
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