Displays up to 12 instances of GFO with 26 output quantities per instance. These
include error signals from overcurrent functions, trip and start signals from
overcurrent, undercurrent, overvoltage and undervoltage. There is a block signal
caused by second harmonic detection. The directional mode of OC1 and OC2 is
shown as is low voltage for directional polarization. The current and voltage as well
as measured current multiplied by cos Phi and the angle between voltage and current
are also shown here.
11.6.8
Secondary circuit supervision
Values for Current circuit supervision and Fuse failure supervision are found under
Secondary circuit supervision. Fail and alarm detection information is available
together with various start and current data.
11.6.8.1
Current circuit supervision (RDIF)
Test/Function status/Secondary System Supervision/
CurrentCircuitSupervision(RDIF)/CCS
Displays up to five instances of CCS with two measurements per instance indicating
the detection of current circuit failure and alarm operation.
11.6.8.2
Fuse failure supervision (RFUF)
Test/Function status/Secondary System Supervision/FuseFailure(RFUF)/FSO
Displays up to six instances of FSO with three measurements per instance indicating
start status.
11.6.9
Control
There are large amounts of output data from the control functions. The main
categories of data are found under Synchrocheck, and Apparatus control. Apparatus
control has by far the largest amount of data since this includes all the interlocking
information for several different breaker arrangements.
11.6.10
Synchrocheck and energizing check (RSYN, 25)
Test/Function status/Control/SynchroCheck(RSYN)/SYN
Displays up to five instances of SYN with 21 measurements per instance. These
include information about which lines and buses selected, various voltage and
frequency differences and feedback on synchronization status.
Section 11
Test the IED
64
Operator's manual
1MRK504049-UEN rev. D
RET 670