ABB RET670 - Page 599

function blocks, SESRSYN1 for busbar2 CB and SESRSYN2 for the tie CB. The
voltage from busbar1 VT is connected to V3PB2 on both function blocks and the
voltage from busbar2 VT is connected to V3PB1 on both function blocks. The voltage
from line1 VT is connected to V3PL2 on both function blocks and the voltage from
line2 VT is connected to V3PL1 on both function blocks. Also, crossed positions of the
disconnectors and VT fuses shall be connected as shown in figure
231. The physical
analog connections of voltages and the connection to the IED and SESRSYN (25)
function blocks must be carefully checked in PCM600. In both IEDs the connections
and configurations must abide by the following rules: Normally apparatus position is
connected with contacts showing both open (b-type) and closed positions (a-type).
Bus CB:
• BUS1_OP/CL = Position of the tie CB and disconnectors
• BUS2_OP/CL = Position of opposite bus CB and disconnectors
• LINE1_OP/CL = Position of own line disconnector
• LINE2_OP/CL = Position of opposite line disconnector
• VB1OK/FF = Supervision of bus VT fuse connected to own bus CB
• VB2OK/FF = Supervision of bus VT fuse connected to opposite bus CB
• VL1OK/FF = Supervision of line VT fuse connected to own line
• VL2OK/FF = Supervision of line VT fuse connected to opposite line
• Setting CBConfig = 1 1/2 Bus CB
Tie CB:
• BUS1_OP/CL = Position of own bus CB and disconnectors
• BUS2_OP/CL = Position of opposite bus CB and disconnectors
• LINE1_OP/CL = Position of own line disconnector
• LINE2_OP/CL = Position of opposite line disconnector
• VB1OK/FF = Supervision of bus VT fuse connected to own bus CB
• VB2OK/FF = Supervision of bus VT fuse connected to opposite bus CB
• VL1OK/FF = Supervision of line VT fuse connected to own line
• VL2OK/FF = Supervision of line VT fuse connected to opposite line
• Setting CBConfig = Tie CB
If three SESRSYN (25) functions are provided in the same IED, or if preferred for
other reason, the system can be set-up without “mirroring” by setting CBConfig to 1½
bus alt. CB on the SESRSYN (25) function for the second busbar CB. Above standard
is used because normally two SESRSYN (25) functions with the same configuration
and settings are provided in a station for each bay.
1MRK504116-UUS C Section 3
IED application
593
Application manual