Measurements - ABB REM 610 Technical Reference Manual

1MRS 752263-MUM
4.1.2.
Motor protection Relay
Technical Reference Manual
when second-pulse synchronization is used, only year-month-day-hour-minute-
second. The relay's real-time clock will be rounded to the nearest whole second or
minute, depending on whether second- or minute-pulse synchronization is used.
When the time is set via the HMI, the entire time is written to the relay's real-time
clock.
Note!
The pulse length of the digital input signal does not affect time synchronization.
Note!
If time synchronization messages are received from a communication protocol as
well, they have to be synchronized within +/- 0.5 minutes at minute-pulse or +/- 0.5
seconds at second-pulse synchronization. Otherwise, the relay's real-time clock will
make sudden minute or second jumps in either direction.
If it is possible that synchronization messages from the communication protocol are
delayed more than 0.5 seconds, minute-pulse synchronization must be used.

Measurements

The table below presents the measured values which can be accessed through the
HMI.
Table 4.1.2-1 Measured values
Indicator Description
L1 Current measured on phase I
L2 Current measured on phase I
L3 Current measured on phase I
I Measured earth-fault current
0
I Calculated NPS current
2
θ
Thermal level
Start time Start-up time of the latest motor start up
Σt
Cumulative start-up time counter
s
Rest.inh. Time to next possible motor start up
Running time Motor running time
Max IL Maximum phase current during motor start up
s
Max IL Maximum phase current after motor start up
Max I Maximum earth-fault current after motor start
0
up
Min IL Minimum phase current after motor start up
Min I Minimum earth-fault current after motor start
0
up
I One-minute demand value
min
1_
I Demand value during the specified time range
n_ min
Max I Maximum one-minute demand value during
the specified time range
RTD1
Temperature from RTD1
RTD2
Temperature from RTD2
RTD3
Temperature from RTD3
RTD4
Temperature from RTD4
L
1
L 2
L
3
1)
1)
1)
1)
REM 610
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