4–68
M‑3311A Instruction Book
51N#1 PICKUP
1.00 Amps
51N#1 CURVE
BEDEF beinv bevinv beinv
51N#1 TIME DIAL
5.0
51N#1 CURRENT SELECTION
sum1 sum2 w1 w2 w3 w4
NOTE:
Inverse Time Residual Current Element #4 is not available in Two or Three Winding applications.
Figure 4-41 IPScom
®
(51N) Inverse Time Residual Overcurrent Setpoint Ranges
Path
: Relay/Setup/Relay Setpoints/51N Inverse Time Residual Overcurrent
COMMAND BUTTONS
Save
Saves all information to the relay.
Cancel
Returns the user to the previous window; any changes to the displayed information are lost.
Sets phase current pickup for 51N#1. This element operates on
I
0
.
Selects one of the eleven inverse time curves, as shown in
Appendix D, Figures D-5 through D-15.
The appropriate curve in the selected family of curves is chosen
here.
Sets current input for inverse time residual overcurrent.
NOTE:
These screens are also applicable for 51N#2, 3 and 4.
NOTE:
Inverse Time Residual Current Element #4 is not avail-
able in Two or Three Winding applications.
51N Inverse Time Residual Overcurrent
The 51 Inverse Time Residual Overcurrent provides
protection against ground faults. Since normal
residual current is usually much lower than the full
load phase current, this function can be set more
sensitively than the phase overcurrent protection.
The curves available for use are shown in Appendix
D,
Inverse Time Curves
, Figures D-5 through D-15.
They cover a range from 1.5 to 20 times tap. For
currents beyond 20 times the pickup setting, the
relay operating time will remain the same as the
time at 20 times pickup setting.
Summary of Contents for M?3311A
Page 1: ...Instruction Book M 3311A Transformer Protection Relay ...
Page 30: ... 29 M 3311A Transformer Protection Relay This Page Left Intentionally Blank ...
Page 55: ...M 3311A Instruction Book 1 6 This Page Left Intentionally Blank ...
Page 87: ...M 3311A Instruction Book 2 32 This Page Left Intentionally Blank ...
Page 89: ...M 3311A Instruction Book 3 2 Figure 3 2 IPScom Main Screen ...
Page 107: ...M 3311A Instruction Book 3 20 Figure 3 22 Setup System Dialog Screen 2 3 Winding ...
Page 108: ...IPScom 3 3 21 Figure 3 23 Setup System Dialog Screen 4 Winding ...
Page 112: ...IPScom 3 3 25 Figure 3 29 I O Map Screen 4 Winding ...
Page 114: ...IPScom 3 3 27 Figure 3 31 Display All Setpoints Screen 4 Winding ...
Page 119: ...M 3311A Instruction Book 3 32 Figure 3 38 View Sequence of Events Recorder Screen ...
Page 127: ...M 3311A Instruction Book 3 40 This Page Left Intentionally Blank ...
Page 150: ...4 23 System Setup and Setpoints 4 Figure 4 14 Setup Sequence of Events Recorder Dialog Screen ...
Page 163: ...4 36 M 3311A Instruction Book Figure 4 15 IPScom Relay Setup System Dialog Screen 2 3 Winding ...
Page 166: ...4 39 System Setup and Setpoints 4 Figure 4 18 IPScom Selection Screen for Input Settings ...
Page 179: ...4 52 M 3311A Instruction Book Figure 4 28 Example of V Hz Capability and Protection Curves ...
Page 187: ...4 60 M 3311A Instruction Book Figure 4 33 49 Function Overload Curves ...
Page 229: ...4 102 M 3311A Instruction Book Table 4 5 Transformer Connections ...
Page 231: ...4 104 M 3311A Instruction Book Table 4 7 Custom Transformer and CT Configuration ...
Page 243: ...M 3311A Instruction Book 5 6 Figure 5 5 Mounting Dimensions for GE L 2 Cabinet H3 and H4 ...
Page 383: ...A 50 M 3311A Instruction Book This Page Left Intentionally Blank ...
Page 389: ...M 3311A Instruction Book B 6 This Page Left Intentionally Blank ...
Page 393: ...D 2 M 3311A Instruction Book Figure D 1 Volts Hz 24IT Inverse Curve Family 1 Inverse Square ...
Page 394: ...Inverse Time Curves Appendix D D 3 Figure D 2 Volts Hz 24IT Inverse Family Curve 2 ...
Page 395: ...D 4 M 3311A Instruction Book Figure D 3 Volts Hz 24IT Inverse Time Curve Family 3 ...
Page 396: ...Inverse Time Curves Appendix D D 5 Figure D 4 Volts Hz 24IT Inverse Curve Family 4 ...
Page 399: ...D 8 M 3311A Instruction Book Figure D 5 Definite Time Overcurrent Curve ...
Page 400: ...Inverse Time Curves Appendix D D 9 Figure D 6 Inverse Time Overcurrent Curve ...
Page 401: ...D 10 M 3311A Instruction Book Figure D 7 Very Inverse Time Overcurrent Curve ...
Page 402: ...Inverse Time Curves Appendix D D 11 Figure D 8 Extremely Inverse Time Overcurrent Curve ...
Page 439: ...F 28 M 3311A Instruction Book This Page Left Intentionally Blank ...