Toshiba GR200 Series Instruction Manual page 408

Setting example 1 (Bus-bar VT=three phases, Line VT=phase-A)
(i)
Bus-bar VT
(Three Phase)
Figure 2.25-6 Example 1: Input voltages and respective phasor diagram for SYN1
Note: The structure of VCT is dependent on the VCT type. (See chapter
1
description: Transformer module
Note: V Bus-bar is Running voltage.
2
Note: V Line is Incoming voltage.
3
Figure 2.25-6 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 2.25-6 and Table 2.25-7.
Output voltage at VT
Input voltage at VCHK
VCHK Setting
4
Note: Set V3 for the scheme switch [SYN-VLine]. This is because V3 and V-L1 are in the
4
same phase.
Line
VCT 1
Line VT
(Phase-A)
V a (V L1 )
V b (V L2 )
V c (V L3 )
Vs (V3)
V s2 (V4)
V Line (Vs)
)
Table 2.25-7 Setting for example 1
Bus-bar VT=
Line VT=
Running voltage (V a )=
Incoming voltage (Vs)=
[SYN-VBus] =
[SYN-VLine]=
- 387 -
V a
V c
a. Phasor diagram in Line
Vs
b. Phasor diagram in Bus-bar
2
V Bus-bar (V a ) 3
Three phase
Phase-A
Phase-A (Bus-bar VT)
Phase-A (Line VT)
V-L1
V3
6F2S1915 (0.46)
V b
Technical
GRZ200 (Soft 031 & 032)