Displays six instances of TOF with six settings per instance. The settings are
operation, start frequency, base voltage setting, internal blocking level, operate time
delay and reset time delay. For the Overfrequency function to operate correctly the
Operation setting must be On. Once the parameters have been set make sure the
settings are properly saved in the IED.
9.3.6.4
Rate-of-change frequency protection (PFRC, 81)
Settings/Setting Group N/Frequency protection/
RateOfChangeOfFrequency(PFRC)
Displays six instances of RCF with eight settings per instance. The settings include
parameters such as operation, base voltage setting, start frequency, internal blocking
level, time delay to trip and frequency restoration.
9.3.7
Multipurpose protection
9.3.7.1
Overview
Under Multipurpose protection there are 12 twelve instances of General current and
voltage parameters. This function has three current and three voltage inputs. The
parameters available are based on the data from these inputs. Within each instance
operation for the included functions can be set to On or Off and a large number of
parameters can be set.
9.3.7.2
General current and voltage protection (PGPF)
Settings/Setting Group N/Multipurpose protection/
GeneralCurrentVoltage(PGPF)
Displays 12 instances of GF with up to 162 settable parameters per instance. These
settings are available for the user defined functions configured with the help of the
Multipurpose protection function.
9.3.8
Secondary system supervision
9.3.8.1
Overview
Under Secondary circuit supervision there are settings for Current circuit supervision
and Fuse failure. There are five instances of Current circuit supervision with
parameters for minimum operation current, rated current and operation. There are six
instances of Fuse failure supervision parameters for setting rated current, voltage,
operation mode and 14 other parameters.
9.3.8.2
Current circuit supervision (RDIF)
Settings/Setting Group N/Secondary system supervision/
CurrentCircuitSupervision(RDIF)
Section 9
Read and change settings
50
Operator's manual
1MRK504049-UEN rev. D
RET 670
