AC power supply PCR-M series

Appendix


Output and Load

Rated output current of AC mode

Rated output current of DC mode

Rated output current of AC mode

For linear loads

The rated AC output current of the PCR-M is limited by the PCR-M output capacity.

  

PCR500M

PCR1000M

PCR2000M

PCR4000M

Output capacity

500 VA

1000 VA

2000 VA

4000 VA

25307.jpg

For capacitor-input rectifying loads

In general, a peak current several times the output current rms flows near the peak output voltage as the output current.

25334.jpg

In this case, the maximum output peak current must not exceed three times the rated maximum current.

135 V range: Maximum peak current = (Rated output capacity/100 V) x 3

270 V range: Maximum peak current = (Rated output capacity/200 V) x 3

If the PCR-M is used with a current exceeding the maximum rated peak current or the maximum current, the protection function of the PCR-M activates and may extremely distort the output voltage waveform or cut off the output.

To supply the maximum peak current above, hold the output voltage (setting) constant. If you suddenly change (increase) the output voltage setting, the output or current waveform may be distorted.

For loads that draw an inrush current

For the loads specified below, an inrush current (several to several tens of times the normal current) may flow during several to several tens of cycles of output frequency when voltage is applied or when the voltage changes suddenly.

Transformers and slide transformers

When voltage is applied to a transformer or slide transformer load, an inrush current of a maximum of several tens to hundreds of times the normal current may flow for several cycles, depending on the voltage application timing or the state of biased magnetization.

Motor and lamp loads

When voltage is applied to a motor or lamp load, an inrush current of several to several tens of times the normal current may flow for several tens to hundreds of cycles.

For capacitor-input rectifying loads

For electronics devices with a capacitor input-type rectifier circuit at the input, if a protective (limiting) circuit against an inrush current is not provided, an inrush current several tens to hundreds of times the normal current may flow for several cycles.

The PCR-M is capable of feeding a maximum output peak current up to three times the rated maximum rms current to a capacitor input-type rectifying load.

If an inrush current exceeding the peak current flows, the protection function of the PCR-M activates and distort the output voltage waveform or cut off the output.

For loads that generate surges

Loads (such as a fluorescent lamp) that generate surges when voltage is applied or when the voltage changes suddenly may cause the PCR-M to malfunction. For these types of loads, install a noise filter in the load end.

For special loads

A current of 100 kHz to 150 kHz caused by the OUTPUT ripple voltage of a PWM inverter method flows to a capacitor when the capacitor is directly connected to the INPUT terminal of a load.

Output and Load (Cont.)

TOP

Rated output current of DC mode

The rated DC output current that can be drawn from the PCR-M is limited by the PCR-M output capacity.

  

PCR500M

PCR1000M

PCR2000M

PCR4000M

Output capacity

400 W

800 W

1600 W

3200 W

25412.jpg

If the PCR-M is used with a current exceeding the rated DC output current, the protection function of the PCR-M activates and may cause the output voltage to drop or to be cut off.

TOP

AC power supply PCR-M seriesAC power supply PCR-M series
Appendix