ABB RED650 - Section 9 Voltage Protection; Two Step Undervoltage Protection UV2 PTUV; Identification; Functionality

Section 9 Voltage protection
9.1 Two step undervoltage protection UV2PTUV
IP14544-1 v3
9.1.1 Identification
M16876-1 v7
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Two step undervoltage protection UV2PTUV
3U<
SYMBOL-R-2U-GREATER-THANV2 EN-US
27
9.1.2 Functionality
M13789-3 v12
Undervoltages can occur in the power system during faults or abnormal conditions.
The two-step undervoltage protection function (UV2PTUV) can be used to open
circuit breakers to prepare for system restoration at power outages or as a long-time
delayed back-up to the primary protection.
UV2PTUV has two voltage steps, each with inverse or definite time delay.
It has a high reset ratio to allow settings close to the system service voltage.
1MRK 505 394-UEN A Section 9
Voltage protection
Line differential protection RED650 2.2 IEC 227
Technical manual