Testing – 6
6–15
25 Sync Check
VOLTAGE INPUTS:
See Below
CURRENT INPUTS:
None
TEST SETTINGS:
7
9 Supervise 25
Disable
Phase Angle Limit
PA
Degrees
(0 to 90)
Voltage Limits
Upper Limit
UL
Volts
(60 to 140)
Lower Limit
LL
Volts
(40 to 120)
Sync Check Delay
SD
Cycles
(1 to 8160)
Delta Volt
DV
Volts
(1.0 to 50.0)
Delta Freq
DF
Hz
(0.001 to 0.500)
Dead V1
See Below
Dead V2
See Below
Dead V1 & V2
See Below
Dead Input Enable
DIN
Input
(1 to 6)
Dead Delay
DD
Cycles
(1 to 8160)
Programmed Outputs
Z
Output
(1 to 8)
Function 27 #1, #2
Disable
Function 47 #1, #2
Disable
Functions 59, 59I
Disable
Function 81 #1,2,3,4
Disable
■
NOTE
: The 25 function requires only one phase voltage and V2 for testing in the Line-to-Ground configuration.
The phase voltage used for reference may be selected through the
System Setup
menu. The following tests will reference the phase voltage as V1, although any phase may be used
for testing. Line-to-Line testing will follow the same procedures, with V1 representing the proper Line-
to-Line phase input. Each test below can be performed using any of the three phases as a reference.
1.
Disable functions as shown. Refer to Section 3.2, Configure Relay Data, for procedures.
2.
Confirm settings to be tested.
3.
Phase Angle Limit Test:
Apply Nominal Voltage to V1 and V2, and establish a phase angle
difference of more than
PA
+5°. Hold the
TARGET RESET
button in and slowly decrease the phase
angle difference until Output
Z
LED operates or the pickup indicator operates on the computer target
screen. The angle difference should be equal to
PA
±1°. Release the
TARGET RESET
button and
increase the angle difference, and the
OUTPUT
LED will go out.
4.
Upper Voltage Limit Test:
Apply voltage 5V higher than
UL
to both V1 and V2. Hold the
TARGET
RESET
button in and slowly decrease the voltage on V1 until Output
Z
LED operates, or the pickup
indicator operates on the computer target screen. The voltage should be equal to
UL
&
0.5V or
±0.5%. Release the
TARGET RESET
button and increase the voltage and the
OUTPUT
LED will go
out. If desired, repeat the test using V2.
5.
Lower Voltage Limit Test
: Apply voltage 5V lower than
LL
to both V1 and V2. Hold the
TARGET
RESET
button in and slowly increase the voltage on V1 until Output
Z
LED operates, or the pickup
indicator operates on the computer target screen. The voltage level should be equal to
LL
±0.5V or
±0.5%. Relase the
TARGET RESET
button and decrease the voltage, and the
OUTPUT
LED will go
out. If desired, repeat the test using V2.
6.
Sync Check Time Delay Test
: Apply Nominal Voltage to V1 and V2, and establish a phase angle
difference of more than
PA
+5°. With the output contacts connected to a timer, remove the phase
angle difference and start timing. The contacts will close after
SD
cycles within –1 to +3 cycles or
&
1%.
Summary of Contents for M-3520
Page 1: ...Instruction Book M 3520 Intertie Protection Relay ...
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