TECO 7300EV, Быстрый старт, Страница: 22 / 93

Chapter 3 Environment description and installation
3-12
z
The supply and output ( PE) terminals have to be connected to ground to increase noise
immunity of the Filter.
(A)The control circuit wire and main circuit wire/ other high voltage power wire
or high current power wire should be separated to avoid noise interruption.
z In order to prevent noise interference resulting in inverter operation error, wire of control circuit
should be shielded and twisted. Please refer to following diagram, connect shielded wire to
ground terminal. The wiring distance should be less than 50m.
(
Ｂ
)
You have to make the ground terminal connect to ground correctly. (200V class ground <100
ȍ
;
400V class ground <10
ȍ
.)
z
Ground wiring is based on the electrical equipment technical basis (AWG) and should be made as
short as possible.
z
Do not share the ground of the inverter to other high current loads (welding machine, high power
motor).Connect the terminal to its sole ground.
z
Do not make a loop when several inverters share a common ground point.
(a) Good (b) Good (c) Bad
(C)To ensure maximum safety, use correct wire size for the main power circuit and control circuit
according to the required wiring regulations.
(D)After wiring, check that the wiring is correct, wires are intact, and terminal screws are secured.
Do not connect this end
Shielding wires Protective
Wrapped with
insulating tape
To ground terminal
(See instructions of filter
wiring)
Ground