Sel 411L - Page 450

P.3.342
SEL-411L Relay Protection Manual Date Code 20151029
Protection Functions
Protection Application Examples
Set manual breaker tripping to latch for an open command or operation of
Pushbutton 8 and to unlatch when the breaker auxiliary contact indicates that
the breaker is open.
BK1MTR := OC1 OR PB8_PUL Breaker 1 Manual Trip—BK1
(SEL
OGIC control equation)
ULMTR1 := NOT (52AA1 AND 52AB1 AND 52AC1) Unlatch Manual
Trip -BK1 (SEL
OGIC control equation)
Control Outputs
Use SELOGIC control equations to assign control outputs for tripping. Use the
200 Board control outputs for tripping.
OUT201 := (3PT OR TPA1) AND NOT PLT04 #THREE POLE TRIP
OUT202 := (3PT OR TPA1) AND NOT PLT04 #THREE POLE TRIP
OUT203 := BK1CL AND NOT PLT04 #BREAKER CLOSE
COMMAND
OUT207 := PLT04 #RELAY TEST MODE
OUT208 := NOT (SALARM OR HALARM)
Port 87 Settings
This application uses a serial channel over SONET network between the
relays at terminals S and R. It uses a direct fiber connection between the relays
at terminals R and T.
We would have the following at relays S and T:
E87CH := 3SS Enable 87L Channel (N, 2SS, 2SD, 3SS, 3SM, 2E, 3E, 4E)
We would have the following at Relay R:
E87CH := 3SM Enable 87L Channel (N, 2SS, 2SD, 3SS, 3SM, 2E, 3E, 4E)
For added security, choose unique addresses for all relays.
We would have the following at Relay S:
87TADR := 1 Relay Transmit Address (1–255)
87R1ADR := 2 Channel 1 Receive Address (1–255)
We would have the following at Relay R:
87TADR := 2 Relay Transmit Address (1–255)
87R1ADR := 1 Channel 1 Receive Address (1–255)
87R2ADR := 3 Channel 2 Receive Address (1–255)
We would have the following at Relay T:
87TADR := 3 Relay Transmit Address (1–255)
87R1ADR := 2 Channel 1 Receive Address (1–255)
The S-R channel uses an EIA-422 interface. Choose receive and transmit
clock edge settings to match your particular downstream communications
hardware.