internal measurement loop, resulting in inaccurate measurement.
5.3 Frequency
When EGO700 works in different measurement modes, the acquisition channels
of frequency measurement are different. In the triangle mode, EGO700 measures
frequency through the AB line voltage channel by default; in other modes, EGO700
measures frequency through the A phase voltage channel. If phase A lacks phase,
phase B is selected. If phase A and phase B are missing, take phase C.
5.4 Demand parameters
5.4.1 Real-time demand
Real-time demand is the value of accumulated electrical parameters divided by
the length of time in a time period.
EGO700 provides two demand calculation modes: fixed mode and slip mode. In
any mode, the demand period can be set (5 minutes, 10 minutes, 15 minutes, 30
minutes, 60 minutes). In the fixed mode, the slip time is meaningless; in the slip mode,
the slip time can be set (1 minute, 2 minutes, 3 minutes, 4 minutes), but it needs to
meet the requirement that "the demand period is 5 of the slip time The relationship of
integer multiple of "is shown in the following table.
EGO700 provides three-phase current, three-phase active power, total active
power demand calculation for a total of 7 electrical parameters, and maximum
demand records. The demand value can be viewed through display or communication,
and the demand maximum value record clearing operation is provided.
The following figure shows the calculation method of the demand fixed mode:
Calculation period (minutes)
Adjustable sliding window size (minutes)
5
1
10
1
、
2
15
1
、
3
30
1
、
2
、
3
60
1
、
2
、
3
、
4