Kikusui KHA3000, Руководство по эксплуатации, Страница: 141 / 392

6
KHA3000
141
Estimating the Rsce (61000-3-12)
Executing Harm
onic Tests
●
Calculating and displaying the minimum Rsce value that satisfies a limit value
The minimum Rsce value that satisfies the limit value of each phase is calculated from
harmonic orders (I
2
to I
13
) or measured value of the THD or PWHD according to the
setting of the applied limit value. The “ Factor ” column indicates the harmonic order, the
THD or the PWHD that is the lowest factor for the margin.
The Rsce value is calculated for each phase of L1, L2 and L3. Set the maximum value out
of the L1, L2 and L3 phases as the judgment Rsce value that is necessary for satisfying
the limit value. The set judgment Rsce value becomes the minimum Rsce value in the
standard limit value table.
●
Calculating short-circuit power Ssc and system impedance Z
The short-circuit power Ssc and system impedance Z are calculated from the calculated
Rsce value and the rated apparent power of the equipment. The short-circuit power Ssc
indicates the minimum value of a connectable system, and the system impedance Z
indicates the maximum value of a connectable system.
●
Rsce of hybrid equipment
The Rsce of hybrid equipment executes tests for each component. Measured monitor
values, therefore, are observed for each component. From among the calculated Rsce
values of the components, the maximum value is employed.
1
Press the HA key.
The HA-Test Conditions List display appears.
Real-time measurement monitor values are displayed in the upper part of the setting
item display on the screen.
2
Press the F6 key to select menu page 3/4.
3
Press the F3 key to input a judgment Rsce (estimated value).
The input range is 33 to 350.