ABB Relion 670 Series Technical Reference Manual page 1011

1MRK505222-UUS C
17.3.4
17.3.5
Technical reference manual
For current signals the correction factors will cause a not insignificant impact on the
reported values at low currents. The correction factors are +2.4% and -3.6 degrees at
signal levels below 5% of set base current, +0.6% and -1.12 degrees at signal level
30% of set base current and 0% and -0.44 degrees at signal levels above 100% of set
base current. Between the calibration points 5%, 30% and 100% of set base current,
linear interpolation is used. Since the output from the Power measurement function is
used as an input for the Energy measuring function (ETPMMTR) the above described
impact will also be valid for the output values for ETPMMTR.
Function block
The function blocks are not represented in the configuration tool. The
signals appear only in the SMT tool when merging units (MU) are
included in the configuration with the function selector tool. In the SMT
tool they can be mapped to the desired virtual input (SMAI) of the IED
and used internally in the configuration.
Output signals
Table 620: MU1_4I_4U Output signals
Name Type
I1 STRING
I2 STRING
I3 STRING
I4 STRING
V1 STRING
V2 STRING
V3 STRING
V4 STRING
MUDATA BOOLEAN
SYNCH BOOLEAN
SMPLLOST BOOLEAN
MUSYNCH BOOLEAN
TESTMODE BOOLEAN
Station communication
Description
Analogue input I1
Analogue input I2
Analogue input I3
Analogue input I4
Analogue input U1
Analogue input U2
Analogue input U3
Analogue input U4
Fatal error, serious data loss
MU clock synchronized to same clock as IED
Sample lost
Synchronization lost in MU
MU in test mode
Section 17
1005