M‑3311A Instruction Book
6–46
87T Phase Differential Overcurrent
VOLTAGE INPUTS:
None
CURRENT INPUTS:
Configuration C6
TEST SETTINGS:
Pickup
P
PU
(0.10 to 1.00)
Percent Slope #1
S1
%
(5 to 100)
Percent Slope #2
S2
%
(5 to 200)
Slope Break Point
BP
PU
(1.0 to 4.0)
Even Harmonics Restraint (2nd and 4th) E
E,D,A ENABLE/DISABLE/
ENABLE WITH CROSS
AVERAGE
Restraint
%
(5 to 50)
5
th
Harmonic Restraint
F
E,D,A
Restraint
%
(5 to 50)
Pickup at 5
th
Harmonic Restraint
FP
PU
(0.10 to 2.00)
CT Tap W1/W2/W3/W4
CT1/2/3/4
(1 to 100.0)
1 Amp CT Rating
(0.2 to 20.00)
Programmed Outputs
Z
OUT
(1 to 8)
Expanded I/O
(9 to 16)
Functions 46DT, 46IT, 49
Disable
Function 50
Disable
Function 50N, 50BF
Disable
Function 51, 51N
Disable
Function 87H
Disable
1.
Disable functions as shown. Refer to Section 4.4,
System Setpoints
, for procedure.
2.
Confirm settings to be tested.
3. Connect inputs in Configuration C6 as designated previously. Refer to Section 6.4,
Input
Configurations
for configuration. For testing purposes it is recommended that the CT Tap
Corrections,
CT1
,
CT2
,
CT3
and
CT4
be set to 1.0. If it is desired to test with other CT Tap settings,
the current values must be computed by using the following formulas:
I
AW1
(Applied) =
I
AW1
(Calculated) multiplied by CT1.
I
AW2
(Applied) =
I
AW2
(Calculated) multiplied by CT2.
I
AW3
(Applied) =
I
AW3
(Calculated) multiplied by CT3.
I
AW4
(Applied) =
I
AW4
(Calculated) multiplied by CT4.
NOTE:
All values used for this function are measured in PU’s, which requires calculating the actual cur-
rent in Amps to be used for testing: 1 PU = CT Tap, for three-phase balanced current injection.
4.
Minimum Pickup Test
:
a. Set
I
AW1
(Input 1) = 0 Amps.
b. Press and hold the
TARGET RESET
button in, then slowly increase
I
AW2
(Input 2) until the
PHASE DIFFERENTIAL 87T/H
LED illuminates or the pickup indicator operates on the
computer target screen. The level of operation will be equal to 1.732
•P
per unit
3%.
Содержание M?3311A
Страница 1: ...Instruction Book M 3311A Transformer Protection Relay ...
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Страница 67: ...M 3311A Instruction Book 2 12 Path Monitor Metering ll Figure 2 9 Metering II Screen 4 Winding ...
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Страница 89: ...M 3311A Instruction Book 3 2 Figure 3 2 IPScom Main Screen ...
Страница 93: ...M 3311A Instruction Book 3 6 Figure 3 8 Terminal Window Figure 3 7 IPScom Modem Communication Dialog Screen ...
Страница 99: ...M 3311A Instruction Book 3 12 Path Monitor Metering ll Figure 3 14 Metering II Screen 4 Winding ...
Страница 103: ...M 3311A Instruction Book 3 16 Path Monitor Phasor Diagram F87T Figure 3 18 Phasor Diagram F87T 4 Winding ...
Страница 107: ...M 3311A Instruction Book 3 20 Figure 3 22 Setup System Dialog Screen 2 3 Winding ...
Страница 108: ...IPScom 3 3 21 Figure 3 23 Setup System Dialog Screen 4 Winding ...
Страница 112: ...IPScom 3 3 25 Figure 3 29 I O Map Screen 4 Winding ...
Страница 114: ...IPScom 3 3 27 Figure 3 31 Display All Setpoints Screen 4 Winding ...
Страница 119: ...M 3311A Instruction Book 3 32 Figure 3 38 View Sequence of Events Recorder Screen ...
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Страница 150: ...4 23 System Setup and Setpoints 4 Figure 4 14 Setup Sequence of Events Recorder Dialog Screen ...
Страница 163: ...4 36 M 3311A Instruction Book Figure 4 15 IPScom Relay Setup System Dialog Screen 2 3 Winding ...
Страница 164: ...4 37 System Setup and Setpoints 4 Figure 4 16 IPScom Relay Setup System Dialog Screen 4 Winding ...
Страница 166: ...4 39 System Setup and Setpoints 4 Figure 4 18 IPScom Selection Screen for Input Settings ...
Страница 179: ...4 52 M 3311A Instruction Book Figure 4 28 Example of V Hz Capability and Protection Curves ...
Страница 187: ...4 60 M 3311A Instruction Book Figure 4 33 49 Function Overload Curves ...
Страница 229: ...4 102 M 3311A Instruction Book Table 4 5 Transformer Connections ...
Страница 231: ...4 104 M 3311A Instruction Book Table 4 7 Custom Transformer and CT Configuration ...
Страница 233: ...4 106 M 3311A Instruction Book CONNECTION EXAMPLES Figure 4 72 Typical Transformer Differential Application ...
Страница 234: ...4 107 System Setup and Setpoints 4 AUXILIARY TRANSFORMER EXAMPLE Figure 4 73 Delta ac Wye Wye CT Connection Diagram ...
Страница 236: ...4 109 System Setup and Setpoints 4 GSU TRANSFORMER EXAMPLE Figure 4 75 Wye Delta ac Delta ac CT Connection Diagram ...
Страница 243: ...M 3311A Instruction Book 5 6 Figure 5 5 Mounting Dimensions for GE L 2 Cabinet H3 and H4 ...
Страница 275: ...M 3311A Instruction Book 5 38 Dip Switch J46 J60 J61 J5 J20 J21 J22 J18 Figure 5 34 M 3311A Circuit Board Standard I O ...
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Страница 393: ...D 2 M 3311A Instruction Book Figure D 1 Volts Hz 24IT Inverse Curve Family 1 Inverse Square ...
Страница 394: ...Inverse Time Curves Appendix D D 3 Figure D 2 Volts Hz 24IT Inverse Family Curve 2 ...
Страница 395: ...D 4 M 3311A Instruction Book Figure D 3 Volts Hz 24IT Inverse Time Curve Family 3 ...
Страница 396: ...Inverse Time Curves Appendix D D 5 Figure D 4 Volts Hz 24IT Inverse Curve Family 4 ...
Страница 399: ...D 8 M 3311A Instruction Book Figure D 5 Definite Time Overcurrent Curve ...
Страница 400: ...Inverse Time Curves Appendix D D 9 Figure D 6 Inverse Time Overcurrent Curve ...
Страница 401: ...D 10 M 3311A Instruction Book Figure D 7 Very Inverse Time Overcurrent Curve ...
Страница 402: ...Inverse Time Curves Appendix D D 11 Figure D 8 Extremely Inverse Time Overcurrent Curve ...
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