User manual

69
POWER INSTRUMENTS
The following is an example:
Fig 4.10 Current Month TOU
Calculating mode
1. You can select calculating mode from a fundamental base or all-wave
base by pressing a key or via communication. Fundamental based calculating is
to accumulate energy ignoring harmonics while all-wave based calculating is to
accumulate energy including fundamental and harmonics.
2. There are two ways to calculate apparent energy(power):
Mode 0:
Q
P
S
2
2
+=