GE B90 UR Series, Инструкция по эксплуатации

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5-112 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 5–17: 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
=