PW336i
Hardware User Manual
35
7) Sometiems computer system may affect online result, please change computers.
8) Please note if the kit IP address has been changed. Press “IP reset” button to switch on
kit and confirm the IP in “IP Set”.
4
．
The current and voltage output is not accurate.
1)
Check if the current and voltage output frequency is set correctly.
2) If the current is low, check the setting in “System set” is primary value.
3) Remove the outside connections and measure it no-load.
4) Check if there is strong electromagnetic interference that affects output accuracy.
5) Check the waveform is normal sine wave, the display measurement accuracy is 1% for
reference. (The current should be short circuit.)
6) Check the site meter is ok.
7) The low main power supply will cause inaccuracy output (especially with load). If the
voltage is low, please improve power supply.
8) Change a new computer. If it is ok, it is computer’s problem.
9) If one phase voltage or current output is 0, the fuse might be burnt. Change a new fuse.
5
．
High current output inaccuracy
1) Check if the waveform is topping and the current overload lamp is on.
2) Check low current output.
3) If the above items are met, it indicates the load is high. The current series can improve the
load.
4) Cut all external connections while testing by meter.
5) Check if the power supply decreases much while putting out high current.
6) Check if the power distortion rate exceeds 5%. If it is, high current may cause current
inaccuracy or load capacity decrease.
6
．
High voltage output inaccuracy
1) Check the voltage of power supply. If the voltage is too low, you have to improve the
voltage.
2) Check if the power supply THD exceeds 5%. If it exceeds, the voltage might be inaccuracy
