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5-132
B90 Low Impedance Bus Differential System
GE Multilin
5.5 GROUPED ELEMENTS
5 SETTINGS
5
I2t CURVES:
The curves for the I
2
t are derived from the formulae:
,
(EQ 5.8)
where:
T
= Operate Time (sec.); TDM = Multiplier Setting;
I
= Input Current;
I
pickup
= Pickup Current Setting;
T
RESET
= Reset Time in sec. (assuming energy capacity is 100% and RESET: Timed)
DEFINITE TIME CURVE:
The Definite Time curve shape operates as soon as the pickup level is exceeded for a specified period of time. The base
definite time curve delay is in seconds. The curve multiplier of 0.00 to 600.00 makes this delay adjustable from instanta-
neous to 600.00 seconds in steps of 10 ms.
(EQ 5.9)
(EQ 5.10)
where:
T
= Operate Time (sec.), TDM = Multiplier setting
I
= Input Current,
I
pickup
= Pickup Current setting
T
RESET
= Reset Time in seconds (assuming energy capacity is 100% and RESET: Timed)
c) INSTANTANEOUS OVERCURRENT
PATH: SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1(6)
CURRENT ELEMENTS
INSTANTANEOUS OVERCURRENT
Table 5–23: I
2
T CURVE TRIP TIMES
MULTIPLIER
(TDM)
CURRENT (
I
/
I
pickup
)
1.5
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
0.01
0.44
0.25
0.11
0.06
0.04
0.03
0.02
0.02
0.01
0.01
0.10
4.44
2.50
1.11
0.63
0.40
0.28
0.20
0.16
0.12
0.10
1.00
44.44
25.00
11.11
6.25
4.00
2.78
2.04
1.56
1.23
1.00
10.00
444.44
250.00
111.11
62.50
40.00
27.78
20.41
15.63
12.35
10.00
100.00
4444.4
2500.0
1111.1
625.00
400.00
277.78
204.08
156.25
123.46
100.00
600.00
26666.7
15000.0
6666.7
3750.0
2400.0
1666.7
1224.5
937.50
740.74
600.00
INSTANTANEOUS
OVERCURRENT 1
IOC1 FUNCTION:
Disabled
Range: Disabled, Enabled
MESSAGE
IOC1 CT:
F1
Range: Available current channels
MESSAGE
IOC1 PICKUP:
1.200 pu
Range: 0.001 to 30.000 pu in steps of 0.001
MESSAGE
IOC1 PICKUP DELAY:
0.000 s
Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
IOC1 RESET DELAY:
0.000 s
Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
IOC1 BLOCK:
Off
Range: FlexLogic operand
MESSAGE
IOC1 TARGET:
Self-Reset
Range: Self-Reset, Latched, Disabled
MESSAGE
IOC1 EVENTS:
Disabled
Range: Enabled, Disabled
T
TDM
100
I
I
pickup
----------------
2
--------------------------
=
T
RESET
TDM
100
I
I
pickup
----------------
2
–
----------------------------
=
T
TDM in seconds, when
I I
pickup
=
T
RESET
TDM in seconds
=
Содержание B90
Страница 10: ...x B90 Low Impedance Bus Differential System GE Multilin TABLE OF CONTENTS ...
Страница 50: ...2 20 B90 Low Impedance Bus Differential System GE Multilin 2 3 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2 ...
Страница 118: ...4 28 B90 Low Impedance Bus Differential System GE Multilin 4 3 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4 ...
Страница 284: ...5 166 B90 Low Impedance Bus Differential System GE Multilin 5 8 TESTING 5 SETTINGS 5 ...
Страница 334: ...10 8 B90 Low Impedance Bus Differential System GE Multilin 10 2 BATTERIES 10 MAINTENANCE 10 ...
Страница 338: ...A 4 B90 Low Impedance Bus Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Страница 460: ...C 30 B90 Low Impedance Bus Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Страница 476: ...E 10 B90 Low Impedance Bus Differential System GE Multilin E 1 IEC 60870 5 104 APPENDIX E E ...
Страница 502: ...viii B90 Low Impedance Bus Differential System GE Multilin INDEX ...