Two Step Undervoltage Protection Uv2Ptuv (27) - ABB RES670 Technical Manual

1MRK 511 408-UUS A
Section 9
9.1
9.1.1
9.1.2
Phasor measurement unit RES670 2.2 ANSI
Technical manual
Voltage protection

Two step undervoltage protection UV2PTUV (27)

Identification
Function description
Two step undervoltage protection
Functionality
Undervoltages can occur in the power system during faults or abnormal conditions.
The two-step undervoltage protection function (UV2PTUV, 27) 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 (27) 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.
IEC 61850 IEC 60617
identification identification
UV2PTUV
3U<
V2 EN-US SYMBOL-R-2U-GREATER-THAN
Section 9
Voltage protection
IP14544-1 v3
M16876-1 v7
ANSI/IEEE C37.2
device number
27
M13789-3 v12
271