PCR-M
81
Appendix
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.
Summary of Contents for PCR 2000M
Page 34: ...34 PCR M Chapter 2 Installation and Preparation ...
Page 79: ...Appendix ...
Page 91: ...PCR M 91 ...
