Toshiba GR200 Series - (ii) Wide (N=3) communication; 2.37.4 Integral communication bits

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 513 -
(ii) Wide (N=3) communication
Figure 2.37-5 shows the Wide frames in the IEEE C37.94 standard as N=3†. When Wide is
applied, sub-communication channels are provided at bits: COM1(2bits), COM2(2bits),
COM3(2bits), COM4(2bits), and COM6(6bits).
Header
I
0
Ia
V1
Ib
COM1
CRC
a. IEEE C37.94 frame
N=1
SCOM
Ic
SCOM1
MS0
RA0
MS0
RA3
MS0
Spare
MS0
RA0
MS0
RA3
MS0
Spare
SCOM2
MS1
RA1
MS1
RA4
MS1
Spare
MS1
RA1
MS1
RA4
MS1
Spare
SCOM3
MS2
RA2
MS2
RA5
MS2
Spare
MS2
RA2
MS2
RA5
MS2
Spare
SCOM4
Local test
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA7
SA8
SA9
SA10
SA11
VCOM 1
VCOM 2
VCOM 3
VCOM 4
ICOM 1
ICOM 2
ICOM 3
ICOM 4
COM1
R
D
Y
S
A
S
P
1
S
P
2
C
R
C
1
bit
1
bit
1
bit
Header
COM6
CRC
N=2
COM6
I0
C
R
C
1
bit
1
bit
1
bit
1
bit
1
bit
1
bit
Header
COM5
CRC
N=3
COM5
CRC
1
bit
1
bit
1
bit
COM2
Ia3
Ib3
Ic3
COM3
COM4
Ia
Ia2
Ib2
Ic2
Ib
Ic
COM2
1
bit
1
bit
COM3
1
bit
1
bit
COM4
1
bit
1
bit
1
bit
1
bit
1
bit
Figure 2.37-5 Sub communication channels at N=1,2, and 3 in C37.94 for 1.5CB
†Note: Set Wide for scheme switch [CH*_COM_WIDTH]. For more information, see
Chapter Relay application: Transmission control .
‡Note: Three bits in the COM5 (1–3) are pre-assigned for sending signals “CBDS-A,-B,-
C”. Other three bits in the COM5 (4–6) are pre-assigned for sending signals “DIF-
A, -B,-C”.
2.37.4 Integral communication bits
When On is set for setting [DIFGL-EN]†, zero-sequence current data ‘I
0
’will be sent to the
remote end using the integral channel spaces (ICOM1—4) in the communion frame. If Off is
set, the ICOM1—4 space will not be used during the communication. Therefore, the user can
use those spaces for user’s PLC data.
†Note: see Chapter Relay application: Zero-sequence current differential protection
(DIFGL) for more detail.