Sinee EM500 - AC Reactor Installation; Connection to Terminal Block; Noise Filter Installation at Power Supply Side; Surge Suppressor Installation

EM500 Open-Loop Vector Control Inverter User Manual
42
shall not be longer than once every 30 minutes.

Inverter will not automatically start after power failure.
3.2.5.4Connection to Terminal Block
Input power can be connected to R, S and T randomly irrespective of their phase
sequence on the terminal block.
3.2.5.5AC Reactor Installation
Excessive surge current may be generated when inverter is connected to a large
capacity (over 600KVA) power transformer or the input power supply is connected to a
capacitive load, and this may damage the rectifier. Connect a 3-phase AC reactor
(optional) to the input side of inverter, which not only suppresses peak current and
voltage, but also improves the power factors of system.
3.2.5.6Surge Suppressor Installation
It’s required to install a surge suppressor, if there is an inductive load near inverter,
for example electromagnetic contactor, solenoid valve, solenoid coil and electromagnetic
circuit breaker.
3.2.5.7Noise Filter Installation at Power Supply Side
A noise filter can filter the noise transmitted between power cable and inverter and
the impacts of the noise generated by inverter on the power grid.
 A special noise filter is required for an inverter; a general noise filter is
not adopted usually for performance purpose.
 Correct and incorrect installation methods of a noise filter are shown in
Figure 3–6 and Figure 3–7.
MCCB
专用噪声
滤波器
其它控
制设备
EMC
EM600
变频器
IM
Special Noise
Filter
EM500
Inverter
Other
Control
Device
Figure 3–6 Correct Installation of Noise Filter