ESAB EASY-WELD SSR 400 Betriebsanleitung

EASY-WELD SSR 400/600

Fully Thyristorised Welding Rectifier (MMA)

EASYWELD SSR 400, SSR 600

FULLY THYRISTORISED MMA WELDING POWER SOURCE

Instruction manual

For

Installation, Operation & maintenance

Contents

Page No.

SAFETY 1-2

RATING & ASSEMBLING 3

ACCESSORIES LIST 4

INSTALLATION 4-5

WELDING OPERATIONS 6

MAINTENANCE & INSPECTION 7

FAULT FINDINGS 8-9

ELECTRICAL WIRING DIAGRAM 10-11

PCB CHECK POINTS 12-13

WELD DEFECTS AND POSSIBLE CAUSES

SPARES LIST

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:

• 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.

• Work on high voltage equipment may only be carried out by a qualified electrician.

• 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 OF EASYWELD SSR 400, SSR 600

EASY WELD

SSR-400

EASY WELD SSR-

600

CHARACTERISTICS

INPUT:

SUPPLY VOLTAGE, PHASE &

FREQUENCY 415 V ±10%, 3 Phase, 50 Hz, AC

MAXIMUM INPUT CURRENT 30 Amps 55 Amps

MAXIMUM RATING 21.6 KVA 40 KVA

OUTPUT:

OUTPUT CURRENT RANGE DC 10-400 A

(Single Range)

DC-10A – 600A

(Single Range)

MAXIMUM CURRENT AT 60% DUTY

CYCLE 400 Amps DC 600 Amps DC

MAXIMUM CONTINUOUS CURRENT AT

100% DUTY CYCLE 310 Amps DC 470 Amps DC

OPEN CIRCUTI VOLTAGE (MAXIMUM) 100 Volts DC

TYPE OF WELDING CURRENT

CONTROL STEPLESS

CLASS OF INSULATION ‘H’

COOLING FORCED AIR COOLED

APPROX DIMENSION

(L x W x H) IN mm 675 x 350 x 690 615 x 455 x 850

WEIGHT (APPROX) 130 Kgs. 160 Kgs.

ASSEMBLING

The complete installation should consists the following instruments:

No. Description Type Quantity

WELDING

POWER

SOURCE

EASYWELD SSR – 400

EASYWELD SSR – 600

ONE

REMOTE

CONTROLLER

RCU SSR 400

RCU SSR-600

ONE

ACCESSORY LIST

FUSE ELEMENT 3A 1 Piece

FUSE ELEMENT 1A 1 Piece

INSTALLATION

a) Capacity of equipment

EASY WELD

SSR-400

EASY WELD

SSR-600

INPUT VOLTAGE 415 V ±10% AC

FREQUENCY & PHASE 50 Hz, 3 PHASE

MAXIMUM RATING OF EQUIPMENT 21.6 KVA 40 KVA

CAPACITY OF FUSE (B CLASS) 32 Amps HRC 60 Amps HRC

INPUT CABLE 8mm2or more 22m2or more

OUTPUT CABLE 50mm2(Cu)

Minimum

70mm2(Cu)

Minimum

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

− Tolerance of Power Voltage Variation is ±10% of rated input voltage.

− 100 Amps MCB to be used as alternative to SFU.

b) 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.

c) Ventilation

Adequate ventilation is recommended at the place of installation. For example the

following guideline should be followed:

− In case of the area is more than 300 square meters (per unit), no ventilation is

required, provided the room is not completely air tight.

− In case of the area is less than 300 square meters, the torch is used in fixed

condition and the welding is continuously performed, adequate ventilation is

recommended with the help of vent fan or exhaust duct.

d) Installation Items

No. Items No. Items

1. Remote control Unit RCU-SSR

400 / RCU SSR 600

7. Control Cable for RCU SSR-400 /

Control Cable for SSR 600

2. Work Piece 8. Welding Cable

3. Switch Box (Input) 9. Welding Cable

4. Connector for Remote Control Unit 10. Input Cable

5. Negative terminal 11. Electrode Holder

6. Positive Terminal 12. Electrode

13. Terminal Block input

REMARKS:

While performing a ground work, it is recommended that a skilled electrician do the work.

WELDING OPERATION

Once the installation of the equipment is completed, connect the work Cable to the

negative output terminal and the cable end of the electrode holder to the Positive output

terminal. These cable connections should be tightened properly to avoid electrical heating

due to loose connections. Put the Main Switch box in ‘ON’ position and turn on power

ON/OFF switch. The green lamp on the panel of the Power Source will now glow and the

fan will start rotating. Now the equipment is ready. Connect an Electrode with the

Electrode Holder. The welding current can be controlled by the current control

potentiometer mounted on the front panel of the Power Source or through Remote

Controller as explained below.

a) WELDING CURRENT ADJUSTMENT

Put the local/remote switch to ‘Local’ mode. Now set the DC output current as required

with the help of the current control potentiometer and ignite an experimental Arc. For the

fine tuning of the required current, set the parameters using the Ammeter mounted on the

front panel of the power source.

b) LOAD VOLTAGE/OPEN CIRCUIT VOLTAGE

Press and set Amps/Volts switch to volts position, the meter on the front panel will now

indicate the output DC voltage. On releasing this switch, it will automatically come back to

Amps position and the meter will read the output DC Welding current.

c) REMOTE CONTROLLER

The output Welding current can be increased and decreased as desired from the

operation point with the help of the Remote Controller unit as per the following guideline,

even on load condition.

Set the Local/Remote switch to remote position and connect the remote controller to the

socket provided in the power source. Now set the Welding current by turning current

control potentiometer. Graduation of the current value mentioned on the Remote

Controller Unit should be followed as guideline. However, for accurate output current,

adjust the potentiometer to a proper value from the METER mounted on the Front panel

of the power source after generating as experimental arc.

MAINTENANCE & INSPECTION

The maintenance and inspection should be carried out only after the main fuse box in the

3-phase AC line is turned OFF or disconnected properly.

Maintain and inspect the set regularly as per following guidelines:

a) Regular Inspection (Every 3-6 months, depending on operation frequency):

Inspection Inspection Point Maintenance Method

Loose connection / damageFuse Box

Confirmation of proper use

Repair if necessary, refer to

Power Equipment Capacity

Proper tightening of connectionsInput and Output

Terminals Confirmation of insulation

Tighten first and then insulate

with tape

Line Contactor Confirmation of abrasion at Contact

points

Replace with new one

Sedimentation of Dust Blow out the dust using dry

compressed air.

Inside the power

source

Trace of overheating and damage

to cables / wiring

Repair the damaged section

and insulate properly. Replace

with new wire / cable if

damage is severe.

b) Cautions to H.V. Test & Insulation Resistance Measurement Test

Careless execution of these tests will cause damage to the power source since thyristors

and other semiconductor parts are in this unit. While conducting these tests according to

the by-laws of your company, the following steps should be performed first:

o Take off the cables from the switch box that are connected to the three input

terminals and short-circuit the three input terminals.

o Take off the cable that is connected to two output terminals and short-circuit the

two output terminals.

o Short circuit between anode and cathodes of thyristors SCR1-6.

o Remove the two ground conductors. (Take off the left side panel. Remove one

conductor near the contactor on the upper panel and also the other conductor near

to the leg of the reactor at lower front of the power source).

o Use 500 V DC Megger only.

o Go back to original conditions by removing short-circuit etc. once the test is over.

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