MI 2883 Energy Master
Technical specifications
161
6.2.20
Time and duration uncertainty
Standard compliance: IEC 61000-4-30 Class A (Section 4.6)
Real time clock (RTC) temperature uncertainty
Operating range
Accuracy
-20
C ÷ 70
C
± 3.5 ppm
0.3 s/day
0
C ÷ 40
C
± 2.0 ppm
0.17 s/day
Event duration and recorder time-stamp and uncertainty
Measuring Range
Resolution
Error
Event Duration
1
0 ms ÷ 7 days
1 ms
1 cycle
Record and Event Time stamp
N/A
1 ms
1 cycle
6.2.21
Temperature probe
Measuring range
Resolution
Accuracy
-10.0
C ÷ 85.0
C
0.1
C
± 0.5
C
-20.0
C ÷ -10.0
C and 85.0
C ÷ 125.0
C
± 2.0
C
6.3 Recorders
6.3.1 General recorder
Sampling
According to the IEC 61000-4-30 Class S requirements. The basic
measurement time interval for voltage, harmonics, interharmonics
and unbalance is 10-cycle time interval for a 50 Hz power system
and 12-cycle time interval for a 60 Hz power system. Instrument
provides approximately 3 readings per second, continuous
sampling. All channels are sampled simultaneously. For harmonics
measurement input samples are resampled, in order to assure that
sampling frequency is continuously synchronized with main
frequency.
Recording
quantities
Voltage, current, frequency, crest factors, power, energy, 50
harmonics, 50 interharmonics, flickers, signalling, unbalance, under
and over deviation. See section 4.4 for details which minimum,
maximum, average and active average values are stored for each
parameter.
Recording
interval
1 s, 3 s (150 / 180 cycles), 5 s, 10 s, 1 min, 2 min, 5 min, 10 min,
15 min, 30 min, 60 min, 120 min.
Events
All events, without limitation can be stored into record.
Alarms
All alarms, without limitation can be stored into record.
Trigger
Predefined start time or manual start.
Note:
If during record session instrument batteries are drained, due to long interruption
for example, instrument will shut down and after electricity comes back, it will
automatically restart recording session.
