ESAB TAF 800, TAF 1250 Instruction manual

GB

TAF 800/ TAF 1250
AC

Instruction manual

Valid for serial no. 8240456 513 701 GB 2010−08−17

ESAB AB, Welding Equipment, SE−695 81 Laxå, Sweden, declares under sole responsibility that
welding power source TAF 800 / TAF 1250AC from serial number 712 (2007 w.12) is designed and
tested in conformity with standard EN 60974−1 and EN 60974−10 in accordance with the conditions in
the directives (2006/95/EC) and (2004/108/EC).

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Laxå 2007−03−30

Kent Eimbrodt
Global Director
Equipment and Automation

DECLARATION OF CONFORMITY

2

1 SAFETY 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 INTRODUCTION 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 General 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 Technical data 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 INSTALLATION 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 General 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Unpacking and location 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Connections 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 PC board 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 OPERATION 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 General 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Controls 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.3 Start−up 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 MAINTENANCE 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 General 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 Cleaning 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 ORDERING OF SPARE PARTS 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DIAGRAM 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LIST OF COMPONENTS 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CONNECTION INSTRUCTION 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SPARE PARTS LIST 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rights reserved to alter specifications without notice.

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GB

1 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.

All work must be carried out by trained personnel well−acquainted with the operation of the welding
equipment. 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:

S its operation
S location of emergency stops
S its function
S relevant safety precautions
S welding

2. The operator must ensure that:

S no unauthorised person is stationed within the working area of the equipment when it is

started up.

S no−one is unprotected when the arc is struck

3. The workplace must:

S be suitable for the purpose
S be free from draughts

4. Personal safety equipment

S Always wear recommended personal safety equipment, such as safety glasses, flame−proof

clothing, safety gloves.

S Do not wear loose−fitting items, such as scarves, bracelets, rings, etc., which could become

trapped or cause burns.

5. General precautions

S Make sure the return cable is connected securely.
S Work on high voltage equipment may only be carried out by a qualified electrician.
S Appropriate fire extinquishing equipment must be clearly marked and close at hand.
S Lubrication and maintenance must not be carried out on the equipment during operation.

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GB

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

S Install and earth the welding unit in accordance with applicable standards.
S Do not touch live electrical parts or electrodes with bare skin, wet gloves or wet clothing.
S Insulate yourself from earth and the workpiece.
S Ensure your working stance is safe.

FUMES AND GASES − Can be dangerous to health

S Keep your head out of the fumes.
S 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.

S Protect your eyes and body. Use the correct welding screen and filter lens and wear protective

clothing.

S Protect bystanders with suitable screens or curtains.

FIRE HAZARD

S Sparks (spatter) can cause fire. Make sure therefore that there are no inflammable materials nearby.

NOISE − Excessive noise can damage hearing

S Protect your ears. Use earmuffs or other hearing protection.
S Warn bystanders of the risk.

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

READ AND UNDERSTAND THE INSTRUCTION MANUAL BEFORE INSTALLING OR OPERATING.

PROTECT YOURSELF AND OTHERS!

WARNING

This product is intended for industrial use. In a domestic environment this
product may cause radio interference. It is the user’s responsibility to take
adequate precautions.

WARNING!

Read and understand the instruction manual
before installing or operating.

Do not dispose of electrical equipment together with normal waste!

In observance of European Directive 2002/96/EC on Waste Electrical and Electronic
Equipment and its implementation 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 our local representative.

By applying this European Directive you will improve the environment and human health!

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GB

2 INTRODUCTION

2.1 General

TAF 800/1250 are remote−controlled, two−phase AC welding power sources

designed for high−throughput, mechanised submerged−arc welding (SAW).
They should always be used in conjunction with ESAB’s control box
A2−A6 Process Controller (PEH).

The welding power source converts, via a thyristor bridge−rectifier, the secondary
voltage’s sine wave to a square wave with excellent arc ignition and welding
characteristics. They are fan cooled and are overload protected by a thermal
cut−out. Re−setting takes place automatically as soon as the temperature has
reduced to an acceptable level.

The welding power source and control box are connected together via a two−wire
bus, which makes it possible to control the welding process very precisely.

Adjustment of the welding power source can be carried out from the front panel of
the control box, where all the welding parameters can be adjusted by the operator.
The operation of the welding power source is controlled and monitored completely
by the control box, from which the start and stop characteristics can be set.
The pre−set welding parameters can be monitored while welding is in progress.

For more detailed information regarding the settings and the working mode of the
welding power source, please refer to the A2−A6 Process Controller (PEH)
instruction manual.

2.2 Technical data

TAF 800 TAF 1250

Voltage 346/400/415/ 500 V, 150 Hz

400/440/550 V, 160 Hz

Permissible load at:

100 % duty cycle
60 % duty cycle

Setting range 300 A/32 V − 800 A/44 V 400 A/36 V − 1250 A/44 V
No−load voltage 71 V 71 V
No−load power 230 W 230 W
Effiency 0,86 0.86
Power factor 0,75 0,76
Weight 495 kg 608 kg
Dimensions L x W x H 774 x 598 x 1228 774 x 598 x 1228
Enclosure class IP 23 IP 23

800 A/44 V
1000 A/44 V

346/400/415/500 V, 150 Hz
400/440/550 V, 160 Hz

1250 A /44 V
1500 A/44 V

Application class

Enclosure class

The IP code indicates the enclosure class, i. e. the degree of protection against penetration by solid
objects or water. Equipment marked IP 23 is designed for indoor and outdoor use.

Application class

The symbol indicates that the power source is designed for use in areas with increased
electrical hazard.

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