ABB REL670 2.2 IEC - Application

10.6.2 Application
SEMOD171876-4 v3
The trip of the circuit breaker at a prolonged loss of voltage at all the three phases
is normally used in automatic restoration systems to facilitate the system
restoration after a major blackout. Loss of voltage check (LOVPTUV) generates a
TRIP signal only if the voltage in all the three phases is low for more than the set
time. If the trip to the circuit breaker is not required, LOVPTUV is used for
signallization only through an output contact or through the event recording
function.
10.6.3 Setting guidelines
SEMOD171929-4 v5
Loss of voltage check (LOVPTUV) is in principle independent of the protection
functions. It requires to be set to open the circuit breaker in order to allow a simple
system restoration following a main voltage loss of a big part of the network and
only when the voltage is lost with breakers still closed.
All settings are in primary values or per unit. Set operate level per phase to
typically 70% of the global parameter UBase level. Set the time delay tTrip=5-20
seconds.
10.6.3.1 Advanced users settings
SEMOD171929-8 v4
For advanced users the following parameters need also to be set. Set the length of
the trip pulse to typical tPulse=0.15 sec. Set the blocking time tBlock to block Loss
of voltage check (LOVPTUV), if some but not all voltage are low, to typical 5.0
seconds and set the time delay for enabling the function after restoration tRestore to
3 - 40 seconds.
10.7 Radial feeder protection PAPGAPC
GUID-831891A3-B5AB-4532-8901-311C541F0ABB v1
10.7.1 Identification
GUID-1B7B3DC5-DD7B-4017-928D-0C41768E94D9 v1
Function description
IEC 61850 identification IEC 60617 identification ANSI/IEEE C37.2
device number
Radial feeder
protection
PAPGAPC U< 27
10.7.2 Application
GUID-7EAA8D3C-F71A-4B97-80C8-31115DF381EE v1
The most common application of the PAPGAPC function is to provide tripping at
the remote end of lines with passive load or with weak end infeed. The function
must be included in the terminal at the weak infeed end of the feeder.
Section 10 1MRK 506 369-UEN B
Voltage protection
556 Line distance protection REL670 2.2 IEC
Application manual