Toshiba GRL100-701B Instruction Manual page 267

The output signal numbers of the OST element are as follows.
Element Signal number
OST1 47
OST2 51
• Press 4 (=Logic circuit) on the "Test" sub-menu screen to display the "Logic circuit" screen.
• Enter a signal number 47 (OST1) or 51 (OST2) to be observed at monitoring jack A and press
the ENTER key.
• Apply the rated voltage in phase with the reference voltage signal to both relays.
• Shift the applied voltage phase angle from the reference signal at one terminal, and measure
the angle just at which the element operates.
• Check that the measured angle is within 180 ° ± 5 ° .
6.5.1.11 Voltage and synchronism check elements
The test circuit is shown in Figure 6.5.1.12. If scheme switch "3PH-VT" is set to "Bus", the
three-phase voltage simulates the busbar voltage, and the single-phase voltage simulates the line
voltage. If the switch is set to "Line", the opposite is true.
Three-phase
voltage
source
V
Single-phase
voltage
source
+
DC
power
−
supply
DC
voltmeter
Figure 6.5.1.12 Testing Synchronism Check Elements
When testing OVL2, UVL2 and SYN2, a single-phase voltage must be applied to terminals 17
and 18, instead of terminals 15 and 16 and "3PH-VT" is set to "Line".
Voltage and synchronism check elements and their output signal number are listed below.
OVL2, UVL2 and SYN2 are used for two-breaker autoreclose.
Remarks
Two-terminal and three-terminal application
Three-terminal application
V
(**)
φ
(*)
(*) In case of testing OVL2, UVL2 and SYN2.
(**) In case when "VT-RATE" is set to "PH/PH".
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6 F 2 S 0 8 5 0
GRL100
TX1
TB1 V a
-11
CH1
V b RX1
-12
V c
-13
TX2
-14 CH2
RX2
A
Monitoring
jack A
0V
-15
V r
-16
-17
V r
-18
TB4
-A16
-A17
E