Technology Parameters; Working Principle Of Main Circuit - GALAGAR SMART CUT 1000 Manual Técnico De Instrucciones

Ventilate all flammable or explosive vapors from the workplace.
Do not cut or weld on containers that may have held combustibles.
Provide a fire watch when working in an area where fire hazards may exist.
Hydrogen gas may be formed and trapped under aluminum workpieces when they are cut underwater or while
using a water table. DO NOT cut aluminum alloys underwater or on a water table unless the hydrogen gas can
be eliminated or dissipated. Trapped hydrogen gas that is ignited will cause an explosion.
NOISE NOISE
NOISE NOISE
Noise can cause permanent hearing loss. Plasma arc processes can cause noise levels to exceed safe limits. You
must protect your ears from loud noise to prevent permanent loss of hearing.
To protect your hearing from loud noise, wear protective ear plugs and/or ear muffs. Protect others in the
workplace.
Noise levels should be measured to be sure the decibels (sound) do not exceed safe levels.
PLASMA ARC RAYS PLASMA ARC RAYS
PLASMA ARC RAYS PLASMA ARC RAYS
Plasma Arc Rays can injure your eyes and burn your skin. The plasma arc process produces very bright ultra violet
and infra red light. These arc rays will damage your eyes and burn your skin if you are not properly protected.
To protect your eyes, always wear a cutting helmet or shield. Also always wear safety glasses with side shields,
goggles or other protective eye wear.
Wear cutting gloves and suitable clothing to protect your skin from the arc rays and sparks.
Keep helmet and safety glasses in good condition. Replace lenses when cracked, chipped or dirty.
Protect others in the work area from the arc rays. Use protective booths, screens or shields.

2. 2. 2. 2. Technology Parameters

Technology Parameters
Technology Parameters Technology Parameters

2.1. Working principle of main circuit

2.1. Working principle of main circuit
2.1. 2.1. Working principle of main circuit Working principle of main circuit
The working principle of CUT100 Air Plasma Cutting Machine is shown as the following figure. Three-phase 380V
work frequency AC is rectified into DC (about 530V), then it is converted to medium frequency AC (about 20 KHz) by
inverter device (discrete IGBT), after reducing voltage by medium transformer (the main transformer) and rectified
by medium frequency rectifier (fast recovery diode), and is outputted by inductance filtering. The circuit adopts
current feedback control technology to insure current output stably. Meanwhile, the cutting current parameter can
be adjusted continuously and steplessly to meet with the requirements of cutting craft.
Three-phase, AC
Rectify
380V 50Hz
SMART CUT 1000
DC
AC
Inverter
fig 2.1 Working principle diagram
Medium Medium
AC
frequency frequency
transformer rectify
Current positive-
feedback control
15
DC DC
Hall device