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GE Multilin C60 Breaker Protection System 5-269

5 SETTINGS 5.8 INPUTS AND OUTPUTS

5.8.11 TELEPROTECTION INPUTS AND OUTPUTS

a) OVERVIEW

The relay provides sixteen teleprotection inputs on communications channel 1 (numbered 1-1 through 1-16) and sixteen

teleprotection inputs on communications channel 2 (on two-terminals two-channel and three-terminal systems only, num-

bered 2-1 through 2-16). The remote relay connected to channels 1 and 2 of the local relay is programmed by assigning

FlexLogic operands to be sent via the selected communications channel. This allows the user to create distributed protec-

tion and control schemes via dedicated communications channels. Some examples are directional comparison pilot

schemes and direct transfer tripping. It should be noted that failures of communications channels will affect teleprotection

functionality. The teleprotection function must be enabled to utilize the inputs.

b) TELEPROTECTION INPUTS

PATH: SETTINGS  INPUTS/OUTPUTS  TELEPROTECTION  TELEPROT INPUTS

Setting the TELEPROT INPUT ~~ DEFAULT setting to “On” defaults the input to logic 1 when the channel fails. A value of “Off”

defaults the input to logic 0 when the channel fails.

The “Latest/On” and “Latest/Off” values freeze the input in case of lost communications. If the latest state is not known,

such as after relay power-up but before the first communication exchange, then the input defaults to logic 1 for “Latest/On”

and logic 0 for “Latest/Off”.

 TELEPROT INPUTS



TELEPROT INPUT 1-1

DEFAULT: Off