Applied Precision WS 2120 User Manual page 27

4.6 Energy Measurement and Test
This page shows measured and calculated energy values. Page is activated by key F1 of Load Values
page.
Active, reactive and apparent energies are accumulated beside the measurement and shown on this
page. Accumulation of these energies can be stopped and started again (key F3) or just restarted by
key F4.
Energy Values screen in WS 2320
List of displayed quantities:
ΣP ........ Sum of Active Powers
ΣQ ....... Sum of Reactive Powers
ΣS ........ Sum of Apparent Powers
cos φ, sin φ ........ Power Factor
E ........ Active Energy
P
E ........ Reactive Energy
Q
E ........ Apparent Energy
S
Control keys:
F1 ....... Graphical Presentation screens
F2 ....... Energy Test
F3 ....... Stop / start online energy accumulation
F4 ....... Clear energy registers
F5 ....... Menu
Online energy accumulation - Sum of Energies (resp. Powers) accumulate values from the beginning
automatically. With F3 button it is possible to suspend/resume accumulation.
When Energy Test screen is accessed these registers will be cleared but only if Test Initialization has
been carried out (see next chapter).
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4.6.1 Energy Values
* P43
Energy Values screen in WS 2120
ΣE
...... Sum of Active Energies
P
ΣE
...... Sum of Reactive Energies
Q
ΣE
...... Sum of Apparent Energies
S
f ........... Frequency
L1xx .... Voltage Phase Sequence (L123 or L132)
L 1xx ... Current Phase Sequence (L
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WS-UGFW619-EN
Working Standard
User's Guide
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123 or L 132)
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