Toshiba GRZ100 B Series, Instruction Manual, Page: 254 / 447

⎯
253
⎯
6 F 2 S 0 8 4 6
6.6 Conjunctive Tests
6.6.1 On Load Test
With the relay connected to the line which is carrying a load current, it is possible to check the
polarity of the voltage transformer and current transformer and the phase rotation with the
metering displays on the LCD screen.
•
Open the following "Metering" screen from the "Status" sub-menu.
/ 2 M e t e r i n g
V a 6 3 . 5 V 0
V b 6 3 . 4 V - 1 2 0 A
V c 6 3 . 5 V 1 2 0
2 . 1 0 l
. 0
°
- 1 1 5 . 0
°
. 0
°
. 1
°
b
l a
l c
A 2 . 1 0
A 2 . 1 5
4 . 9
°
1 2 5 . 1
°
. . .
A c t i v e p o w e r + 3 1 8 . 5 0 M
R e a c t i e 2 9 . 0 0 M
. . .
W
v p o w e r -
r a v
F r e q u e c n y 6 0 . 0 H z
3 3 / 1
+
+
+
+
Note: The magnitude of voltage, current and power can be set in values on the primary side or on the
secondary side by the setting. (The default setting is the primary side.)
Phase angles are expressed taking that of 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.)
•
And/or open the following "Direction" screen from the "Status" sub-menu to check the
direction of load current. (See Section 4.2.4.6.)
／２ Ｄｉｒｅｃｔｉｏｎ
Ｐｈａｓｅ Ａ： Ｆｏｒｗａｒｄ
Ｐｈａｓｅ Ｂ： Ｆｏｒｗａｒｄ
Ｐｈａｓｅ Ｃ： Ｆｏｒｗａｒｄ
•
Check that the phase rotation is correct.
•
Verify the phase relationship between the voltage and current with the 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
carried out after the signal receive and send contacts are connected to the telecommunication
circuit.
The signal send circuit from the relay to the telecommunication equipment is checked by forcibly
operating the signal send relay and monitoring the signal at the telecommunication equipment.
Signal sending is performed on the LCD using the "Test" sub-menu as follows.
•
Press 3 (= Binary output) on the "Test" screen to display the "Binary output" screen. The LCD
displays the output modules installed depending on the model.
•
Enter 2 to select the IO#2 module, the LCD will display the screen shown below, indicating
the name of the module, the name of the output relay, the name of the terminal block and the