User-Programmable Inverse-Time Characteristics For Undervoltage Protection - ABB RELION REX640 Technical Manual

1MRS759142 C
11.3.2.2
REX640
Technical Manual
GUID-30C7E4DB-A33B-4002-BF85-52D8E3A27478 V1 EN
Figure 886: Inverse curve B characteristic of undervoltage protection
User-programmable inverse-time characteristics for undervoltage
protection
The user can define curves by entering parameters into the standard formula:
General function block features
Section 11
1701