ESAB TIG 300i Manual de usuario

TIG 300i

INVERTER TIG

Welding Power Source

Instruction manual

Ver: 1.0 0620

TIG 300i

INVERTER WELDING POWER SOURCE

Instruction manual

For

Installation, Operation & General maintenance

CONTENTS

Item

Page No.

SAFETY

3-4

RATING AND INSTALLATION

5-7

CAUTIONS FOR INSTALLATION

7-8

WELDING OPERATIONS

9-11

WIRING DIAGRAM

GENERAL MAINTENANCE

PARTS LIST AND EXPLODED VIEW

14-17

ESAB INDIA CONTACT DETAIL

SAFETY

Users of ESAB welding equipment have the ultimate responsibility for ensuring that

anyone who works on or near the equipment observes all the relevant safety

precautions. Safety precautions must meet the requirements that apply to this type of

welding equipment. The following recommendations should be observed in addition to

the standard regulations that apply to the workplace.

Trained personnel well acquainted with the operation of the welding equipment must

carry out all the work. Incorrect operation of the equipment may lead to hazardous

situations, which can result in injury to the operator and damage to the equipment.

1. Anyone who uses the welding equipment must be familiar with:

• its operation

• location of emergency stops

• its function

• relevant safety precautions

• welding

2. The operator must ensure that:

• no unauthorized person is stationed within the working area of the equipment

when it is started up.

• no one is unprotected when the arc is struck

3. The workplace must:

• be suitable for the purpose

• be free from drafts

4. Personal safety equipment

• Always wear recommended personal safety equipment, such as safety glasses,

flameproof clothing, and safety gloves.

• Do not wear loose—fitting items, such as scarves, bracelets, rings, etc., which

could become trapped or cause burns.

5. General precautions

• Make sure the return cable is connected securely.

• Only a qualified electrician may carry out work on high voltage equipment.

• Appropriate fire extinguishing equipment must be clearly marked and close at

hand.

• Lubrication and maintenance must not be carried out on the equipment during

operation.

Read and understand the instruction manual before installing or operating.

ESAB can provide you with all necessary welding protection and accessories.

WARNING

Arc welding and cutting can be injurious to yourself and others. Take

precautions when welding.

Ask for your employer’s safety practices which should be based on manufacturers’

hazard data.

ELECTRIC SHOCK –Can kill

• Install and earth the welding unit in accordance with applicable

standards.

• Do not touch live electrical parts or electrodes with bare skin, wet

gloves or wet clothing.

• Insulate yourself from earth and the workpiece.

• Ensure your working stance is safe.

FUMES AND GASES –Can be dangerous to health

• Keep your head out of the fumes.

• Use ventilation, extraction at the arc, or both, to take fumes and gases

away from your breathing zone and the general area.

ARC RAYS –Can injure eyes and burn skin.

• Protect your eyes and body. Use the correct welding screen and filter

lens and wear protective clothing.

• Protect bystanders with suitable screens or curtains.

FIRE HAZARD

• Sparks (spatter) can cause fire. Make sure therefore that there are no

inflammable materials nearby.

NOISE –Excessive noise can damage hearing

• Protect your ears. Use earmuffs or other hearing protection.

• Warn bystanders of the risk.

MALFUNCTION –Call for expert assistance in the event of malfunction.

PROTECT YOURSELF AND OTHERS!

CAUTION!

This product is solely intended for arc welding

Do not dispose of electrical equipment together with normal waste!

In accordance with national law, electrical equipment that has

reached the end of its life must be collected separately and returned

to an environmentally compatible recycling facility. As the owner of

the equipment, you should get information on approved collection

systems from the local representative. By applying this Directive you

will improve the environment and human health

RATING

RATING OF TIG 300i INVERTER WELDING POWER SOURCE

Contents of parameters

Unit

TIG 300i

Output

No-load voltage

The working voltage of

manual welding

20.4-30

The working voltage of

argon arc welding

10.4-22

Rated welding current

TIG: 300 MMA: 250

Current adjustment

range

TIG: 10-300 MMA: 10- 250

Rated load duty cycle

(Argon arc welding)

300A/ 100%

Rated load duty cycle

(Manual welding)

250A/ 100%

Input

Number of phases

Phase

Frequency

50/60

Supply voltage

415V

Rated input current

(Argon arc welding)

Maximum effective

input current

(Argon arc welding)

Rated input current

(Manual welding)

Maximum effective

input current

(Manual welding)

Rated input capacity

KVA

Static external characteristic

Down slope characteristic

Lifting device

Handle

Efficiency η

≥85%

Power Factor

0.99

Insulation grade

Enclosure protection grade

IP21S

Weight

Boundary dimensions (L* W* H)

510×275×420 Without handle

510×275×510 With handle

INSTALLATION

Input wiring

oEnsure that the voltage, number of phases, frequency and capacity of the input

power are consistent with the calibration values on the nameplate of the welding

machine.

oWiring shall be performed by professional electrician.

oThe input cable and air inlet are located on the back panel of the welding machine.

Please refer to the structure diagram of welding machine for detailed location.

oConnect the input cable to the power to ensure the reliable connection.

oThe casing must be grounded, and the grounding bolt is located at the lower right

corner of the back panel of the welding machine and marked with a grounding

mark.

oConfirm the air inlet is connected smoothly with the argon cylinder during the weld

of argon arc welding.

oThe recommended specifications of ground wire, fuse protector or breaker are as

follows:

Specifications for input cables, ground wires and input fuse protectors or breakers at three-phase /50Hz

rated load duty cycle

Welding

machine

model

Load duty

cycle

Input

voltage

Input

current

Maximum

effective

input

current

60℃cable specification

Fuse

protector

breaker

Three-phase

input cable

Ground

wire

TIG 300i

100%

415V

17A

≥4 mm2

60 A

Output connection

oThe positive pole of the output end, the negative pole of the output end and the

control connector (welding torch switch) are all located on the lower side of the

front panel, please refer to the structure diagram of welding machine for details.

(1) Manual arc welding connection method

oConnect one end of the negative output cable to the negative quick coupling,

and the other end to the job.

oConnect the negative quick coupling to the negative pole of the output end and

tighten it clockwise.

oConnect one end of the positive output cable to the positive quick coupling, and

the other end to the electrode holder.

oConnect the positive quick coupling to the positive pole of the output end and

tighten it clockwise.

(2) Argon arc welding connection method

oConnect one end of the positive output cable to the positive quick coupling, and

the other end to the job.

oConnect the positive quick coupling to the positive pole of the output end and

tighten it clockwise.

oConnect the two-core control plug in the argon arc welding torch cable to the

control connector (welding torch switch) and tighten it, and connect the cable

connector in the argon arc welding torch cable to the negative quick coupling.

oConnect the negative quick coupling to the negative pole of the output end and

tighten it clockwise.

oConnect the air pipe of the argon cylinder to the input of the gas inlet. Please

refer to the structure diagram of back panel for the location of the input gas

connection.

oConnect the air pipe of argon arc welding torch to air outlet nozzle of the air

outlet. Please refer to the front panel structure diagram for the position of the air

outlet nozzle.

oNote: confirm that the air inlet is reliably connected with the argon cylinder.

CAUTIONS FOR INSTALLATION

Provide a Switch Box for every Welding Power Source, and use designated

fuse

Tolerance of Power Voltage Variation is 10% of rated input voltage.

a) Installation place

Install in the place where less moisture and dust exist. Avoid direct sunlight and

rain, and maintain ambient temperature within –10o to +45o C as much as

possible.

Keep the welding power source at least 20 cm. away from the wall (if any).

In case of installation of more two units side by side, a distance of more than 20

cm is recommended between the two power sources.

Use a shield to protect the welding arc in case of excessive air draft.

b) Ventilation

Adequate ventilation is recommended at the place of installation. For

example the following guideline should be followed:

a) In case of the area being more than 300 square meters (per unit), no

ventilation is required, provided the room is not completely airtight.

b) In case of the area being less than 300 square meters and the welding

is continuously performed, adequate ventilation is recommended with

the help of vent fan or exhaust duct.

c) While performing the grounding work, it is recommended that a skilled

electrician does the work.

WELDING OPERATIONS

Front Panel

oSelect the parameters to be adjusted by adjusting the LEFT or RIGHT shift keys

on the front panel, and preset the parameters to be welded through the panel

ADJUSTMENT knob.

oEach welding parameter on the front panel can be independently adjusted, and

the ranges are as follows:

Pre flow Gas

Initial current

Up slope time

Welding current

0.1-10s

10-welding current

0-15s

10-300A

Down slope

time

Crater current

Post Flow Gas

Arc Force

0-25s

10-welding current

0.5-30s

0-100%

TIG welding has three modes of operation, which are 2-step, 4-step and repeat mode.

The schematic diagram of the operational modes are as follows:

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