The connection of three phase input cable
1)
The installation have to accord with related standard, and operate by professional persons;
2)
Shut off the breaker of power, the connection operation only be allowed after turning off;
3)
This machine use 3 phase 380V, 50Hz, user have to prepare relevant distribution box, air breaker and power
cables. The power condition as the below sheet:
Model
The sectional area
of input copper
cable (mm
2
)
The sectional
area of ground
cable (mm
2
)
Fuse (A)
Contact capacity
(A)
LGK-200IGBT
≥16
≥16
125
125
4)
The connection of power lead
Use eligible cables and sockets to connect it, and must be operated by a qualified electrician.
5)
Connection of ground cable
Connect the green-yellow wire of power source cable to the ground, the sectional area must match the
requirements in above form, to ground firmly. Ground connecting method should follow state standard.
1
、
The connection of compressed air and the operation of pressure regulating filter (The function of pressure
regulating filter please check the below figure)
Hoop
Gas pressure
regulating valve
Inlet pipe
Draining water tip
1)
The compressed gas should meet the requirement mentioned in point “Plasma gas conditions”. Connect the gas
pipe with the gas inlet of air filter on the back panel and hoop it tightly. The usage of pressure regulating filter is
as follows. When it is to adjust pressure, lift up air pressure regulating valve, and rotate it. Left rotation aims to
reduce outlet gas pressure, right rotation aims to increase outlet gas pressure. After the gas pressure is adjusted
properly, press down regulating valve.
2)
The air filter regulator should be checked periodically. If the water level reaches two-thirds of filter glass, it must
be drained, or this will affect incision quality. The gas supply valve should be closed during water draining, and
Gas Checking function is selected in panel. When the indicated valve of gas pressure meter is zero, water will
drain out from drainage mouth automatically.
2.
Connection of cooling water
Connect the copper nozzle marked with “water inlet” on the cutter rear side with water supply pipe, and tighten it.
Connect the copper nozzle marked with “Backwater” with water recycle pipe, and tighten it.
Notes: when use gas cooling torch, the torch selection switch on panel must be set to air-cooled torch position,
and the cooling water cannot be connected with. The cooling water is for cooling torch only, and cutter power
source does not need water cooling.
3.
The connection of output terminal
1)
The connection of torch
Gouging and cutting use different torch consumables, please choose the correct parts