Motor Terminal Surge Voltage Suppression Filter (For The 400V Class); Protection Against Noise Interference From Inverter - Hyundai J300 series Instruction Manual

J300 INSTRUCTION MANUAL
5
Do not insert leading power factor capacitors or surge absorbers between the output
terminals of the inverter and the motor.
Earth
leakage
breaker
W
Power
supply
Be sure to ground the grounding terminal,
When inspecting the unit, after turning the power supply off be sure to wait unitl the
CHARGE lamp beside the control terminal is off before opening the cover.
(If the lamp is lit or still flickering, then the internal capacitor's residual voltage is still dangerous.)
MOTOR TERMINAL SURGE VOLTAGE SUPPRESSION FILTER
(FOR THE 400V CLASS)
In a system using an inverter of the voltage control PWM system, a surge voltage caused by the
cable constants such as the cable length (especially when the distance between the motor and
inverter is 10m or more) and cabling method may occur at the motor terminal.
A dedicated filter of the 400V class for suppressing this surge voltage is available, please order
one.

PROTECTION AGAINST NOISE INTERFERENCE FROM INVERTER

The inverter uses many semiconductor switching elements such as transistors and IGBTs. Thus, a
radio set or measuring instrument located near the inverter is susceptible to noise interference.
To protect the instruments from erroneous operation due to noise interference, they should be
installed well apart from the inverter. It is also effective to shield the whole inverter structure.
Addition of an EMI filter on the input side of the inverter also reduces the effect of noise from
commercial power line on external devices.
Note that external dispersion of noise from the power line can be minimized by connecting an
EMI filter on the primary side of inverter.
(L1)(L2)(L3)
R, S, T
INV
CAUTION
(T1) (T2) (T3)
U, V, W
Leading power factor capacitor
Surge absorber