10.5 Voltage differential protection VDCPTOV
SEMOD153860-1 v2
10.5.1 Identification
SEMOD167723-2 v2
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Voltage differential protection VDCPTOV - 60
10.5.2 Application
SEMOD153893-5 v3
The Voltage differential protection VDCPTOV 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
indicates a fault, either short-circuited or open element in the capacitor bank. It
is mainly used on elements with external fuses but can also be used on
elements with internal fuses instead of a current unbalance protection
measuring the current between the neutrals of two half’s of the capacitor bank.
The function requires voltage transformers in all phases of the capacitor bank.
Figure
291 shows some different alternative connections of this function.
Section 10 1MRK 506 369-UEN B
Voltage protection
552 Line distance protection REL670 2.2 IEC
Application manual
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