ABB Relion 670 series - Voltage Differential Protection VDCPTOV (60)

1 2 5 50 200
110
120
130
140
150
100
0.05 0.1 0.2 0.5 10 20 100
V/Hz
%
Continous
Time
(minutes)
t6 t5 t4 t3 t2 t1
transformer capability curve
relay operate characteristic
en01000377.vsd
IEC01000377 V1 EN
Figure 292: Example on overexcitation capability curve and V/Hz protection settings
for power transformer
10.5 Voltage differential protection VDCPTOV (60)
10.5.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Voltage differential protection VDCPTOV - 60
10.5.2 Application
The Voltage differential protection VDCPTOV (60) functions can be used in some
different applications.
• Voltage unbalance protection for capacitor banks. The voltage on the bus is
supervised with the voltage in the capacitor bank, phase- by phase. Difference
Section 10 1MRK 506 369-UUS -
Voltage protection
586 Line distance protection REL670 2.2 ANSI
Application manual