Siemens SIPROTEC 7UM62 User Manual

Functions
2.10 Inverse-Time Overcurrent Protection (ANSI 51V)
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
78
Figure 2-21 Logic Diagram of the Voltage Restraint Inverse Time Overcurrent Protection
The reduction of the current pick-up threshold in case of a decreasing voltage (control voltage assignment) is
performed phase by phase according to table 2-4.

Siemens SIPROTEC 7UM62 Specifications

General

Brand	Siemens
Model	SIPROTEC 7UM62
Category	Protection Device
Language	English