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6.6 Conjunctive Tests
6.6.1
On Load Test
With the relay connected to the line which is carrying load current, it is possible to check the
polarity of the voltage and current transformers and the phase rotation with the metering displays
on the LCD screen.
• Open the following "Metering" screen from the "Status" sub-menu.
Note: The magnitude of voltage, current and power can be set in values on the primary side or on
• Check that the phase rotation is correct.
• Verify the phase relationship between the voltage and current with a known load current
direction.
6.6.2
Signaling Circuit Test
This test is performed when a command protection using a signaling channel is applied.
The test is to check whether the communication circuit is correctly connected between a local
terminal and a remote terminal.
Input the voltage or current at a remote terminal relay. Check the voltage and current by the
"Metering" screen from the "Status" sub-menu at a local relay.
6.6.3
Tripping and Reclosing Circuit Test
The tripping and reclosing circuit including the circuit breaker is checked by forcibly operating
the output relay and monitoring the circuit breaker that is tripped or reclosed. Forcible operation
of the output relay is performed on the "Binary output" screen of the "Test" sub-menu as
described in Section 6.4.3.
Tripping circuit
• Ensure that the circuit breaker is closed.
• Press 2 (= Binary output) on the "Test" sub-menu screen to display the "Binary output"
screen. The LCD displays the output modules mounted.
/ 2
M e t e r i n g
V a
6 3 . 5 V
V b
6 3 . 4 V
- 1 2 0
V c
6 3 . 5 V
1 2 0
. . .
. . .
A c t i v e
p o w e r
R e a c t i
v
e
p o w e r
F r e q u e
n
c
y
the secondary side by the setting. (The default setting is the primary side.)
Phase angles are expressed taking that of the positive sequence voltage as the reference angle.
The sign of the phase angle can be set positive for either lagging phase or leading phase. (In
the default setting, it is set positive when the phase is leading to the reference angle.)
The sign of the power flow direction can be set positive for either power sending or power
receiving. (The default setting is power sending.)
1 2 / F e b / 1 9 9 8
. 0 °
0
l a
2 . 1 0
. 0 °
l
b
2 . 1 0
. 1 °
l c
2 . 1 5
+
4 0 0 . 1 1 M
W
-
2 5 . 5 1 M
v
6 0 . 1
H z
⎯ 213 ⎯
6 F 2 S 0 8 3 5
2 2 : 5 6
3 / 1 3
4 . 9 °
A
- 1 1 5 . 0 °
A
1 2 5 . 1 °
A
a
r
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