Toshiba GR200 Series - (i) Setting example 1 (Bus-bar VT=three phases, Line VT=phase-A)

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 484 -
(i) Setting example 1 (Bus-bar VT=three phases, Line VT=phase-A)
VCT
1
V
a
V
c
Vs
V
b
Line VT
(Phase-A)
Bus-bar VT
(Three Phase)
Line
Bus-bar
a. Phasor diagram in Line
b. Phasor diagram in Bus-bar
V
a
(V
L1
)
V
b
(V
L2
)
V
c
(V
L3
)
Vs (V3)
V
s2
(V4)
V
Bus-bar
(V
a
)
3
V
Line
(Vs)
2
Figure 2.35-6 Example 1: Input voltages and respective phasor diagram for SYN1
1
Note: The structure of VCT is dependent on the VCT type. (See chapter Technical
description: Transformer module )
2
Note: V
Bus-bar
is Running voltage.
3
Note: V
Line
is Incoming voltage.
Figure 2.35-6 shows the VCT input voltages and phases from Bus-bar and Line, and
shows the phase relationship between the running voltage and the incoming voltage. In this
case, configure the settings in accordance with Figure 2.35-6 and Table 2.35-7.
Table 2.35-7 Setting for example 1
Output voltage at VT
Bus-bar VT= Three phase
Line VT= Phase-A
Input voltage at VCHK
Running voltage (V
a
)= Phase-A (Bus-bar VT)
Incoming voltage (Vs)= Phase-A (Line VT)
VCHK Setting
4
[SYN-VBus] = V-L1
[SYN-VLine]= V3
4
Note: Set V3 for the scheme switch [SYN-VLine]. This is because V3 and V-L1 are in the
same phase.