GE D90 Plus Instruction Manual page 362

Line distance protection system

Hide thumbs Also See for D90 Plus:

Table of Contents

CONTROL ELEMENTS

Terminal one-pole open

Figure 297: Terminal three-pole open logic

The autoreclose scheme also has dedicated logic to determine if one pole is opened at the

local terminal. For single-breaker operation, the

operand is used to derive this signal. For the 1&2 sequence, both breakers must

either declare one pole open or be open or out-of-service. For the 1-2 sequence, breaker 1

must declare one pole open and breaker 2 must declare one pole open or be open or out-

of-service. For the 2-1 sequence, breaker 2 must declare one pole open and breaker 1

must declare one pole open or be open or out-of-service. Alternately, a user-defined

setting is available to generate this signal.

BREAKER 1 ONE P OPEN

LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL

CHAPTER 7: PROTECTION

BREAKER 2 ONE P