KYORITSU 6315 Instruction Manual - Manual (Page 116)

KEW6315 6.7 Power quality
KEW6315 - 114 -
6.7 Power quality
Press the Key to display Power quality screen.
Factors impair power quality and symptoms
Power quality Waveform Symptom Adverse effect
Harmonics
Inverter and Thyristor circuits
(phase-control circuit) are used
for the control circuit of general
devices; these circuits affect
currents and causes
harmonics.
Burnout of capacitors and
reactors, buzzes from
transformers, malfunction
of circuit breakers, flicker in
screen or noises on stereos
due to currents with
harmonic components.
Swell
Inrush currents occur when
switches for power lines are
on, and then voltages
increase instantaneously.
Shutdown of devices or
robots or reset on PC and
business machines may be
caused.
Dip
Inrush currents occur when
motor loads are activated, and
dip in current occurs.
INT
Power supply is interrupted
for a second due to lightning
strikes.
RMS
RMS