ABB Relion 670 series - Interlocking for breaker-and-a-half diameter BH (3); Introduction

Name Type Description
VQB220TR BOOLEAN Switch status of 289 and 2089 are valid (open or closed)
VPQB7TR BOOLEAN Switch status of 789 is valid (open or closed)
VPQB12TR BOOLEAN Switch status of 189 and 289 are valid (open or closed)
VPBC12TR BOOLEAN Status of the bus coupler apparatuses between WA1
and WA2 are valid
VPBC17TR BOOLEAN Status of the bus coupler app. between WA1 and WA7
are valid
VPBC27TR BOOLEAN Status of the bus coupler app. between WA2 and WA7
are valid
12.4.8 Interlocking for breaker-and-a-half diameter BH (3)
12.4.8.1 Introduction
The interlocking for breaker-and-a-half diameter (BH_CONN(3), BH_LINE_A(3),
BH_LINE_B(3)) functions are used for lines connected to a breaker-and-a-half
diameter according to figure 365.
Section 12 1MRK505222-UUS C
Control
712
Technical reference manual