Sherman DIGITIG pulse AC/DC 200GD Inverter welder

SHERMAN DIGITIG PULSE AC / DC 200GD INVERTER WELDING MACHINE

| Brand: SHERMAN | Welding methods: TIG AC, TIG DC, MMA | Power supply: 230V | Welding current: 200A | Efficiency : 40% |

STANDARD EQUIPMENT

• Sherman DIGITIG pulse AC / DC 200GD welder
• Welding holder T-26 / 4m
• 3m electrode cable
• 3m mass cable
• User manual and warranty card

SHERMAN DIGITIG PULSE AC / DC 200GD

The latest generation device, designed for professional use. It is made in IGBT technology and equipped with digital control. It is used for manual welding using the method

• TIG of steel and non-ferrous metals with direct and alternating current.
• MMA (coated electrode).

In the design and construction of the device, the latest achievements in the field of PWM technology (pulse width modulation) and IGBT modules (bipolar transistors with an insulated gate) were used, thanks to which the welder is characterized by small dimensions and low weight

During MMA welding, the following functions are available:

• VRD
• ARC FORCE
• HOT START

During TIG welding, it is possible to adjust the upslope and downslope, gas pre-flow and post-flow, as well as pulse and AC current parameters.

The device has the memory of the last setting, i.e. after turning it off and on again, the last set parameters are restored and the ability to save 10 sets of pulse and welding current parameter settings.

It is widely used both in production and service works. The device is characterized by excellent welding properties, recommended especially for home and professional users.

TECHNICAL DATA:

• Supply voltage [V]: AC 230 50Hz
• Welding methods: TIG AC / DC, MMA
• Manufacturing technology: IGBT
• Welding current [A]: TIG: 200 / MMA: 180
• Work cycle [%]: 40
• Tension in the state without load. [V]: 59
• Max. current consumption [A]: TIG: 36.5 / MMA: 26.8
• Max. power consumption [kVA]: TIG: 4.2 / MMA: 6.6
• Welding current control: Smooth
• Gas pre-flow [s]: 0.1-1
• Gas post flow [s]: 0-15
• Slope of current [s]: 0-10
• Current dropout [s]: 0-25
• Initial current [A]: 10-200
• Base current [A]: 5–95% of welding current
• Crater current [A]: 10-200
• Pulse frequency [Hz]: 0.5-200
• Pulse Duration [%]: 10-90
• AC frequency [Hz]: 40-200
• AC balance [%]: 30-70
• Current amplitude [%]: ---
• ARC FORCE [A]: 1-50
• Weight [kg]: 18.5
• Dimensions (L x W x H) [mm]: 455 x 195 x 415

IGBT TECHNOLOGY

The basis for the construction of the electric energy conversion system of the welding machine are electronic systems made in the IGBT technology, enabling operation in the frequency range above 200 kHz.

PWM

Pulse width modulation occurs in the conduction state, when a small voltage drop on the control system, in relation to the transmitted power, results in the greatest energy efficiency of the control system.

LEVEL OF SECURITY

The IP defines the degree to which the device is resistant to the ingress of solid and water contaminants. IP21 means that the device is adapted to work in closed rooms.

PROTECTION AGAINST OVERHEATING

The IGBT module is protected against overheating by a protective system that switches off the machine's welding circuit. After a few minutes, the welding machine cools down to a temperature that allows it to be switched on again automatically.

MMA

A covered electrode method consisting of a metal core covered with a sheath. The welder feeds the electrode as it fuses to the workpiece so as to keep the arc of a constant length.

ARC FORCE

Increasing or decreasing the length of the welding arc depending on the distance between the electrode and the material to be welded. It allows you to adjust the dynamics of the welding arc. Shortening the arc length is accompanied by an increase in the welding current, which stabilizes the arc.

VRD

The VRD function lowers the voltage in no-load condition. The correct voltage is not restored until just before the arc is struck. This minimizes the risk of electric shock, but in some cases may make the arc difficult to ignite.

HOT START

The function is to prevent the electrode from sticking to the material and is a great help when striking the arc. It works when the arc is struck, causing the welding current to temporarily increase above the value set by the welder.

WORK CYCLE

The duty cycle is based on a 10-minute period. Duty cycle of 40% means that after 4 minutes of operation, a 6-minute break is required. Duty cycle of 100% means that the device can work continuously without interruption.

HF - NON-CONTACT ARC IGNITION

The Sherman DIGITIG 200GD PULSE device is equipped with an ionizer enabling contactless arc ignition.

TIG AC / DC

Enables TIG welding with alternating current. It is required for welding aluminum and its alloys.

INITIAL CURRENT

The current that appears in the circuit after pressing the button in the handle of the handle. The higher the starting current, the easier it is to strike the arc.

However, when welding thin sheets, too high a starting current can lead to burnout. In some welding modes, the current does not rise to heat the workpiece.

DOWNTIME

Time for the downslope of the welding current from the set value to zero or the value of the crater current.

RISE TIME

The time during which the welding current is upwardly from the starting current to the set welding current value.

TIG PULSE

It affects the shape of the weld and the focus of the arc. Pulse welding also allows you to reduce the amount of heat supplied to the material and is used when welding thin materials.

PULSE WIDTH

Duration of the pulse allows you to adjust the depth of penetration. Increasing the width increases the penetration depth, reducing the amount of heat introduced into the material, reducing the risk of burning through thinner sheets or smaller components.

GAS PRE-FLOW TIME

The time from pressing the button in the handle of the handle to the moment the arc is struck. Typically it should be longer than 0.5 s to deliver shielding gas to the torch nozzle outlet. to cover the starting point of welding and the tungsten electrode. In the case of a longer gas supply line from the cylinder, the pre-flow time should be longer.

GAS FLOW TIME

The time from the extinction of the arc to the closing of the gas valve. to shield the solidifying weld pool from air and to cool the tungsten electrode. Too short a post-flow time may result in oxidation of the weld.

CRATER CURRENT

Current used in some welding modes when the arc is not quenched immediately after the welding current downslope. It allows you to fill the crater and the end of the weld.

PULSE FREQUENCY

The frequency with which the current pulse value changes between the welding current and the base current.

CURRENT FREQUENCY AC

Useful when welding aluminum. The higher the frequency, the better the quality of the weld and the better the focus of the arc.

AC BALANCE

The ratio of the duration of the positive phase to the negative phase. Decreasing the balance introduces more heat into the material, resulting in a narrower weld and deeper penetration, while reducing the heat load on the tungsten electrode.

Increasing the balance introduces less heat into the material, resulting in better cleaning, a wide weld and shallower fusion, however, significantly stresses the tungsten electrode.

MEMORY OF SETTINGS

The device has the memory of the last setting, i.e. after turning it off and on again, the last set parameters are restored. It is also possible to save a total of 20 sets of settings - 10 each for the TIG and MMA methods.

2T / 4T OPERATING MODE

2T - Double-action mode - pressing the button in the handle of the handle turns on the ionizer and ignites the arc. Welding is carried out with the button pressed.

4T - Quadruple mode - pressing the button in the handle of the handle will turn on the ionizer and arc ignition, then release the button and start welding with the released button. Pressing the button again will stop welding.

COOLING

The device has a fan cooling system, which significantly increases its efficiency.