Toshiba GR-200 Series Instruction Manual page 307

Setting example 1 (Bus-bar VT=Three phases, Line VT=phase-A)
(i)
Bus-bar VT
(Three-phase)
Figure 2.25-5 Example 1: Input voltages and respective phasor diagram for SYN
Note: The structure of VCT is dependent on the VCT type. (See chapter
1
description: Transformer module: VCT types →p.
Note:V Busbar is Running voltage.
2
Note: V Line is Incoming voltage.
3
Figure 2.25-5 shows the VCT input voltages and phases from Busbar 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 2.25-5 and Table 2.25-4.
Output voltage at VT
Input voltage at VCHK
VCHK Setting
4
Note: Set Vs for the scheme switch [SYN-VLine]. This is because Vs and V-L1 are in the
4
same phase.
Line VCT 1
Line VT
(Phase-A)
V L1 (V a )
V L2 (V b )
V L3 (V c )
Vs (Vs)
V Line (Vs)
Table 2.25-4 Setting for example 1
Bus-bar VT=
Line VT=
Running voltage (V a )=
Incoming voltage (Vs)=
[SYN-VBus] =
[SYN-VLine]=
- 288 -
V a
V c
a. Phasor diagram in Line
Vs
b. Phasor diagram in Bus-bar
2
V Bus-bar (V a )
3
511)
Three phase
Phase-A
Phase-A (Bus-bar VT)
Phase-A (Line VT)
V-L1
Vs
6F2T0200 (0.15)
V b
Technical
GRE200 (1,2)