GE T35 Instruction Manual page 164
Transformer management relay ur series
Hide thumbs
Also See for T35:
- Instruction manual (610 pages) ,
- Communications manual (532 pages) ,
- Communications manual (526 pages)
Table of Contents
Advertisement
5.5 GROUPED ELEMENTS
I2t CURVES:
2
The curves for the I
t are derived from the formulae:
where: T = Operate Time (sec.); TDM = Multiplier Setting; I = Input Current; I
T
= Reset Time in sec. (assuming energy capacity is 100% and RESET: Timed)
RESET
2
Table 5–18: I
T CURVE TRIP TIMES
MULTIPLIER
(TDM)
1.5
0.01
0.44
0.10
4.44
1.00
44.44
10.00
444.44
100.00
4444.4
600.00
26666.7
FLEXCURVES™:
The custom FlexCurves™ are described in detail in the FlexCurves™ section of this chapter. The curve shapes for the
FlexCurves™ are derived from the formulae:
5
T
where: T = Operate Time (sec.), TDM = Multiplier setting
I = Input Current, I
T
= Reset Time in seconds (assuming energy capacity is 100% and RESET: Timed)
RESET
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.
where: T = Operate Time (sec.), TDM = Multiplier setting
I = Input Current, I
T
= Reset Time in seconds (assuming energy capacity is 100% and RESET: Timed)
RESET
RECLOSER CURVES:
The T35 uses the FlexCurve™ feature to facilitate programming of 41 recloser curves. Please refer to the FlexCurve™ sec-
tion in this chapter for additional details.
5-86
100
------------------------- -
×
2
T
TDM
I
=
--------------- -
I
pickup
2.0
3.0
0.25
0.11
0.06
2.50
1.11
0.63
25.00
11.11
6.25
250.00
111.11
62.50
2500.0
1111.1
625.00
15000.0
6666.7
3750.0
×
T
TDM
FlexCurve Time at
=
×
TDM
FlexCurve Time at
=
RESET
= Pickup Current setting
pickup
T
TDM in seconds, when I I
=
T
=
RESET
= Pickup Current setting
pickup
T35 Transformer Management Relay
100
----------------------------
×
T
TDM
I
,
=
--------------- -
RESET
I
pickup
pickup
CURRENT ( I / I
)
pickup
4.0
5.0
6.0
0.04
0.03
0.40
0.28
4.00
2.78
40.00
27.78
20.41
400.00
277.78
204.08
2400.0
1666.7
1224.5
I
I
--------------- -
--------------- -
when
I
I
pickup
pickup
I
--------------- -
--------------- -
when
I
I
pickup
pickup
>
pickup
TDM in seconds
–
5 SETTINGS
2
–
= Pickup Current Setting;
7.0
8.0
9.0
0.02
0.02
0.01
0.20
0.16
0.12
2.04
1.56
1.23
15.63
12.35
156.25
123.46
100.00
937.50
740.74
600.00
≥
1.00
I
≤
0.98
(EQ 5.26)
10.0
0.01
0.10
1.00
10.00
(EQ 5.27)
(EQ 5.28)
(EQ 5.29)
(EQ 5.30)
GE Multilin
Advertisement
Table of Contents
