Testing – 6
6–43
81 Overfrequency/Underfrequency
VOLTAGE INPUTS
:
Configuration V1
CURRENT INPUTS:
None
TEST SETTINGS:
Pickup
P
Hz
(55 to 65)
50 Hz Relay
(45 to 55)
Time Delay
D
Cycles
(2 to 65,500)
Programmed Outputs
Z
OUT
(1 to 8)
Expanded I/O
(9 to 16)
Functions 24DT, 24IT
Disable
Functions 27
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 V1 designated previously. Set the V.T. Configuration (Section
4.2) as V
A
. Refer to Section 6.4,
Input Configurations
for configuration.
4.
Pickup Test
:
NOTE
: When using single-phase frequency sources, connect the source to one voltage input.
a. Set the voltages to the Nominal Frequency. Set the pickup less than nominal frequency.
b. Press and hold the
TARGET RESET
button in, then slowly decrease the frequency of the
input voltage until the
FREQUENCY 81 O/U
LED illuminates or the pickup indicator operates
on the computer target screen. The level of operation will be equal to
P
Volts
0.1 Hz.
c. Release the
TARGET BUTTON
, then return to nominal input frequency. The
OUTPUT
LED
will extinguish.
d. Press
TARGET RESET
button to remove targets.
e. Set the pickup greater than nominal frequency. Repeat Step b through d, except you will have
to slowly increase the frequency of the input voltage.
5.
Time Test
: With output contacts being connected to the timer, input (
P
– 0.5) Hz and start timing.
The operating time will be (
D
) cycles within
–
1 to +3 cycles or
1%.
6. Complete the testing for the remaining 81 functions by repeating Steps 4 and 5, above.
7. 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 ...