Toshiba GR-200-5 Instruction Manual page 635

Voltage selection for line arrangement
4.5.6
As shown in Figure 4.5-16, input-voltage signals are required in response to the line and bus-
bar arrangement. Incidentally, the input-voltage signals supplied by the VTs are applied to the
IED via the transformer module (VCT†); hence, the input-voltage signal should correspond
with the required relay-element. On this account, settings are provided in the SYNCHK_Ry
function.
Signal
names
VCT
Figure 4.5-18 Voltage signals selected using scheme switches
†Note: For the actual terminal arrangement and signals injected, see chapter
description: Transformer module for AC analog input.
‡Note: The user is required to change the terminal names when setting. For example, the
V1a terminal must be read as "V-L1" when setting is performed.
Figure 4.5-18 illustrates that the signals injected are distributed using scheme switches:
[SyncRy1-VR], [SyncRy1-VI], [SyncRy1-VR], and [SyncRy1-VI]. Examples below show how to
apply a voltage signal for the required relay-element.
Setting example
(i)
Suppose the bus-bar arrangement of Figure 4.5-16 is applied for the SYNDIF function.
Voltages V3 represent the running voltage (V R ) for the respective busbars; thus, the user
Setting
names
→
VL1 V-L1‡
→
VL2 V-L2‡
→
VL3 V-L3‡
→
Vs Vs
Scheme switches [SyncRy1-VR] etc. select a running
Scheme switches [SyncRy2-VR] etc. select a running
- 615 -
SYNCHK_Ry1
Relays for
running voltage
Relays for
incoming voltage
voltage and an incoming voltage.
SYNCHK_Ry2
Relays for
running voltage
Relays for
incoming voltage
voltage and an incoming voltage.
6F2T0207 (0.01)
Technical
GRE200 (5,6)