Testing – 6
6–35
8.
Residual Pickup Test (Residual Current)
:
a. Set the 50BF phase to a current higher than the residual pickup to prevent the 50BF phase
from tripping.
b. Connect the inputs in Configuration C1 (modified), designated previously. The modification
to C1 is to set all three currents to phase angle
s
0° and inject equal magnitude. In this
configuration, the applied value of
I
0
is equal to the applied 3-phase currents.
c. Press and hold the
TARGET RESET
button in, then slowly increase Winding 1 currents
until the
BREAKER FAILURE 50BF
LED illuminates or the pickup indicator operates on the
computer target screen. The level of operation will be (
P
) Amps,
0.1 Amps (
0.02 Amps
1 A CT) or
2%
d. Release the
TARGET RESET
button, then decrease the current. The
OUTPUT
LED will
extinguish.
e. Press
TARGET RESET
button to remove targets.
NOTE:
When calculating values for residual current functions, the relay adds the three-phase currents
(3
I
0
=
I
A
+
I
B
+
I
C
). The relay operates on
I
0
.
9.
Timer Test
: With output contacts (
Z
) connected to the timer, apply approximately 110% of above
Pickup (
P
) Amps and start timing. The operating time will be
D
cycles within –1 or +3 cycles or
2%.
NOTE
: Both the 50BF Phase and Residual Functions use the same timer, therefore, it is only necessary
to perform this test once.
10.
Reduce input currents to 0 Amps.
11.
Repeat Steps 4 through 10 using current Configuration C2 (modified), C3 (modified) and C4
(modified). Observe
BREAKER FAILURE 50BF
LED for pickup.
12. If testing is complete, enable any functions disabled for this test. If further testing is desired, check
the proper functions to disable for the next test and continue from this configuration.
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 ...