Toshiba GR200 Series Instruction Manual page 510

Line differential protection ied
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VCHK1 and VCHK2 settings for 1.5CB system
2.35.5
Line VT
(Three-phase)
Line2
Line2 VT
(Phase-B)
d. Phasor diagram in SYN1
Figure 2.35-9 Input voltages and respective phasor diagram for SYN1 and SYN2
Note: V Bus-bar is Running voltage. V Line is Incoming voltage.
1
Note: V Line2 is Running voltage. V Line is Incoming voltage.
2
Bus-bar
Bus-bar VT
(Phase-B)
Line
V Line (V b )
V Bus-bar (Vs)
1
- 487 -
VCT
V a (V-L1)
V b (V-L2)
V c
V c (V-L3)
a. Phasor diagram in Line
V s (V3)
b. Phasor diagram in Bus
V s2 (V4)
c. Phasor diagram in Line2
e. Phasor diagram in SYN2
6F2S1914 (0.49)
V a
V b
V s
V s2
V Line (V b )
V Line2 (Vs2)
2
GRL200 (Soft 033 & 037)

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