Schweitzer Engineering SEL-351P

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12-18 Standard Event Reports and SER Date Code 990215

SEL-351P Manual Técnico

Column

Heading

Corresponding Elements

(Relay Word Bits)

Symbol

Definition

SEL

OGIC

Var 1

SEL

OGIC

Var 2

SEL

OGIC

Var 3

SEL

OGIC

Var 4

SEL

OGIC

Var 5

SEL

OGIC

Var 6

SEL

OGIC

Var 7

SEL

OGIC

Var 8

SEL

OGIC

Var 9

SEL

OGIC

Var 10

SEL

OGIC

Var 11

SEL

OGIC

Var 12

SEL

OGIC

Var 13

SEL

OGIC

Var 14

SEL

OGIC

Var 15

SEL

OGIC

Var 16

SV1, SV1T

SV2, SV2T

SV3, SV3T

SV4, SV4T

SV5, SV5T

SV6, SV6T

SV7, SV7T

SV8, SV8T

SV9, SV9T

SV10, SV10T

SV11, SV11T

SV12, SV12T

SV13, SV13T

SV14, SV14T

SV15, SV15T

SV16, SV16T

SEL

OGIC

Control Equation

variable timer input SV_ asserted;

timer timing on pickup time; timer

output SV_T not asserted.

SEL

OGIC

Control Equation

variable timer input SV_ asserted;

timer timed out on pickup time;

timer output SV_T asserted.

SEL

OGIC

Control Equation

variable timer input SV_ not

asserted; timer previously timed

out on pickup time; timer output

SV_T remains asserted while timer

timing on dropout time.

3PO 3PO * Three Pole Open element asserted

(used in Switch-Onto-Fault logic).

SOTF SOTFE * Switch-Onto-Fault Enabled

element asserted.

PT PT * Permissive Trip received (POTT

logic).

PTRX PTRX1, PBTX2 1 Permissive Trip Received input 1

asserted and Permissive Trip

Received input 2 deasserted

(DCUB logic).

Permissive Trip Received input 1

deasserted and Permissive Trip

Received input 2 asserted (DCUB

logic).

Permissive Trip Received input 1

asserted and Permissive Trip

Received input 2 asserted (DCUB

logic).

Z3RB Z3RB * Zone 3 Reverse Block element

asserted.

KEY KEY * KEY permissive trip element

asserted.

EKEY EKEY * Echo KEY permissive trip element

asserted.

ECTT ECTT * Echo Conversion To Trip element

asserted.

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