PEMMXU provides pulse outputs EAFPULSE, EARPULSE, ERFPULSE and ERRPULSE
which are activated based on the calculated values of forward and reverse, active
and reactive accumulated energy. The activation of the pulse depends on the
Pulse
quantity
setting. For example, if
Pulse quantity
is set as "10000" Wh, EAFPULSE is
activated every time accumulated energy EA_FWD_ACM increases by 10000 Wh. The
pulse-on and -off time duration can be set using the
Pulse on time
and
Pulse off
time
settings.
Instantaneous three-phase power and power factor measurements are available for
application configurations through output S_INST, P_INST, Q_INST and PF_INST.
Three-phase power and power factor demand values (S_DMD, P_DMD, Q_DMD and
PF_DMD) are provided as outputs. These outputs are dedicated for Load profile
recorder (LDPRLRC).
8.1.13.4 Analog channel configuration
PEMMXU has two analog group inputs which all must be properly configured.
Table 1429: Analog inputs
Input Description
I3P Three-phase currents
U3P Three-phase voltages
See the preprocessing function blocks in this document for the possible
signal sources.
There are a few special conditions which must be noted with the configuration.
Table 1430: Special conditions
Condition Description
U3P connected to real meas-
urements
The function can work with the corresponding one voltage
channel connected if
Measurement mode
is set to "PhsAB",
"PhsBC" or "PhsCA".
The function can work with the corresponding two voltage
channels connected if
Measurement mode
is set to "PhsA",
"PhsB" or "PhsC".
The function requires that all three voltage channels are con-
nected for the other measurement modes.
Improper analog channel configuration causes a validation error if the analog
channels are not completely configured or they do not match with certain settings.
For troubleshooting, check the contents of this chapter and also the preprocessing
blocks in this document. The configuration can be written to the protection relay
once the mismatch is corrected.
8.1.13.5 Signals
Measurement functions
1MRS759142 F
1482 REX640
Technical Manual
To Next Page
Loading...
