Toshiba GRL100-701B Instruction Manual page 254

6.5.1.3 Distance Measuring Element Z1, Z2, Z3, Z4, ZR and PSB
Phase fault element reach test
The test voltage and current input test circuit is shown in Figure 6.5.1.6.
Three-phase
voltage
source
A
Single-phase
current
source
+
DC
power
−
supply
DC
voltmeter
Phase fault elements and their output signal numbers are listed below.
Measuring element
Z1S-AB
Z2S-AB
Z3S-AB
Z4S-AB
ZRS-AB
PSBSIN-AB
PSBSOUT-AB
• Press 5 (=Logic circuit) on the "Test" screen to display the "Logic circuit" screen.
• Enter a signal number to be observed at monitoring jack A and press the ENTER key.
• Apply three-phase rated voltage.
•
Choose a test current IT by referring to the table below, the table shows the relationship
between the reach setting, test current and measuring error.
V V
φ
φ
Figure 6.5.1.6 Testing Phase-Fault Element
Signal number
575
578
581
584
364
596
593
 253 
GRL100
V
TB1
-11
V a
-12
V b
-13
V c
-14
Monitoring
φ
jack
TB1
-1
I a
-2
-3
I b
-4
TB4
-A16
-A17
E
6 F 2 S 0 8 5 0
A
0V