ESAB ET 300i User manual

Renegade
Instruction manual
0463 416 101 GB 20220103 Valid for: serial no. 815-xxx-xxxx
ET300i, ET300iP
Welding power source TIG 300A

TABLE OF CONTENTS
0463 416 101 © ESAB AB 2022
1SAFETY ....................................................................................................... 5
1.1 Meaning of symbols ............................................................................... 5
1.2 Safety precautions ................................................................................. 5
2INTRODUCTION.......................................................................................... 8
2.1 Overview ................................................................................................. 8
2.2 Equipment ............................................................................................... 8
3TECHNICAL DATA ...................................................................................... 9
4INSTALLATION............................................................................................ 11
4.1 Location .................................................................................................. 11
4.2 Lifting instructions ................................................................................. 11
4.3 Mains supply........................................................................................... 12
4.4 Recommended fuse sizes and minimum cable area .......................... 15
5OPERATION ................................................................................................ 17
5.1 Overview ................................................................................................. 17
5.2 Connections and control devices ......................................................... 17
5.3 TIG welding ............................................................................................. 18
5.4 MMA welding........................................................................................... 18
5.5 Connection of welding and return cables ............................................ 18
5.6 Turning the mains power on/off ............................................................ 18
5.7 Connect to cooler EC 1000 .................................................................... 19
5.8 Fan control .............................................................................................. 19
5.9 Thermal protection ................................................................................. 20
5.10 Voltage reducing device (VRD) ............................................................. 20
5.11 Remote control ....................................................................................... 20
5.12 USB connection...................................................................................... 20
6CONTROL PANEL....................................................................................... 21
6.1 ET 300i..................................................................................................... 21
6.1.1 Navigation ............................................................................................ 21
6.1.2 Weld program ....................................................................................... 22
6.2 ET 300iP .................................................................................................. 23
6.2.1 Navigation ............................................................................................ 24
6.3 TIG settings............................................................................................. 25
6.3.1 Hidden TIG functions............................................................................ 26
6.3.2 Measured values .................................................................................. 26
6.4 TIG functions explanation .................................................................... 26
6.4.1 Analogue remote control ...................................................................... 29
6.4.2 Foot pedal functions explanation.......................................................... 29
6.5 MMA settings .......................................................................................... 30
6.5.1 Hidden MMA functions ......................................................................... 31
6.5.2 Measured values .................................................................................. 26
6.6 MMA functions explanation................................................................... 31

TABLE OF CONTENTS
0463 416 101 © ESAB AB 2022
7MAINTENANCE........................................................................................... 33
7.1 Routine maintenance ............................................................................. 33
7.2 Cleaning instruction............................................................................... 33
8TROUBLESHOOTING ................................................................................. 37
9ERROR CODES........................................................................................... 38
9.1 Error code descriptions ........................................................................ 38
10 ORDERING SPARE PARTS ........................................................................ 40
DIAGRAM ............................................................................................................ 41
ORDERING NUMBERS ...................................................................................... 42
ACCESSORIES ................................................................................................... 43
Rights reserved to alter specifications without notice.

1 SAFETY
0463 416 101 -5- © ESAB AB 2022
1 SAFETY
1.1 Meaning of symbols
As used throughout this manual: Means Attention! Be Alert!
DANGER!
Means immediate hazards which, if not avoided, will result in immediate,
serious personal injury or loss of life.
WARNING!
Means potential hazards which could result in personal injury or loss of life.
CAUTION!
Means hazards which could result in minor personal injury.
WARNING!
Before use, read and understand the instruction manual
and follow all labels, employer´s safety practices and
Safety Data Sheets (SDSs).
1.2 Safety precautions
Users of ESAB 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 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
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 equipment must be familiar with:
○ its operation
○ location of emergency stops
○ its function
○ relevant safety precautions
○ welding and cutting or other applicable operation of the equipment
2. The operator must ensure that:
○ no unauthorised person is stationed within the working area of the equipment
when it is started up
○ no-one is unprotected when the arc is struck or work is started with the
equipment
3. The workplace must:
○ be suitable for the purpose
○ be free from drafts

1 SAFETY
0463 416 101 -6- © ESAB AB 2022
4. Personal safety equipment:
○ Always wear recommended personal safety equipment, such as safety glasses,
flame-proof clothing, 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
WARNING!
Arc welding and cutting can be injurious to yourself and others. Take precautions
when welding and cutting.
ELECTRIC SHOCK - Can kill
• Install and ground the unit in accordance with instruction manual.
• Do not touch live electrical parts or electrodes with bare skin, wet gloves or
wet clothing.
• Insulate yourself from work and ground.
• Ensure your working position is safe
ELECTRIC AND MAGNETIC FIELDS - Can be dangerous to health
• Welders having pacemakers should consult their physician before welding.
EMF may interfere with some pacemakers.
• Exposure to EMF may have other health effects which are unknown.
• Welders should use the following procedures to minimize exposure to
EMF:
○ Route the electrode and work cables together on the same side of
your body. Secure them with tape when possible. Do not place your
body between the torch and work cables. Never coil the torch or work
cable around your body. Keep welding power source and cables as
far away from your body as possible.
○ Connect the work cable to the workpiece as close as possible to the
area being welded.
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.
NOISE - Excessive noise can damage hearing
Protect your ears. Use earmuffs or other hearing protection.

1 SAFETY
0463 416 101 -7- © ESAB AB 2022
MOVING PARTS - Can cause injuries
• Keep all doors, panels and covers closed and securely in place. Have only
qualified people remove covers for maintenance and troubleshooting as
necessary. Reinstall panels or covers and close doors when service is
finished and before starting engine.
• Stop engine before installing or connecting unit.
• Keep hands, hair, loose clothing and tools away from moving parts.
FIRE HAZARD
• Sparks (spatter) can cause fire. Make sure that there are no inflammable
materials nearby.
• Do not use on closed containers.
MALFUNCTION - Call for expert assistance in the event of malfunction.
PROTECT YOURSELF AND OTHERS!
CAUTION!
This product is solely intended for arc welding.
WARNING!
Do not use the power source for thawing frozen pipes.
CAUTION!
Class A equipment is not intended for use in residential
locations where the electrical power is provided by the
public low-voltage supply system. There may be
potential difficulties in ensuring electromagnetic
compatibility of class A equipment in those locations,
due to conducted as well as radiated disturbances.
NOTE!
Dispose of electronic equipment at the recycling
facility!
In observance of European Directive 2012/19/EC on
Waste Electrical and Electronic Equipment and its
implementation in accordance with national law,
electrical and/or electronic equipment that has reached
the end of its life must be disposed of at a recycling
facility.
As the person responsible for the equipment, it is your
responsibility to obtain information on approved
collection stations.
For further information contact the nearest ESAB dealer.
ESAB has an assortment of welding accessories and personal protection equipment
for purchase. For ordering information contact your local ESAB dealer or visit us on
our website.

2 INTRODUCTION
0463 416 101 -8- © ESAB AB 2022
2 INTRODUCTION
2.1 Overview
The ET300i and ET300iP are welding power sources intended for TIG welding and for
welding with covered electrodes (MMA).
ESAB accessories for the product can be found in the "ACCESSORIES" chapter of
this manual.
2.2 Equipment
The power source is supplied with:
• Instruction manual
• 3 m (9.8 ft) mains cable with plug
• Gas hose for TIG welding, including hose clamps
• Return cable

3 TECHNICAL DATA
0463 416 101 -9- © ESAB AB 2022
3 TECHNICAL DATA
ET 300i (0445 100 900, 0445 100 904), ET300iP(0445100920, 0445 100 924)
Mains voltage 230–480 V ±10%,
3~50/60Hz
230 V ±10%, 1~50/60Hz
Mains supply Ssc min 4.1 MVA No demand
Zmax 0.04 Ohm No demand
Primary current
Imax MMA 30.0 A 29.0 A
Imax TIG 22.0 A 20.0 A
No-load power demand when in the energy-saving mode
Uin 230 V 63 W 74 W
Uin 400 V 68 W
Uin 480 V 72 W
Setting range
MMA 5A/20V-300A/32V 5A/20V-200A/28V
TIG 5A/10V-300A/22V 5A/10V-200A/18V
Permissible load at MMA
40% duty cycle 300 A / 32.0 V
60% duty cycle 250 A / 30.0 V
100% duty cycle 200 A / 28.0 V 200 A / 28.0 V
Permissible load at TIG
40% duty cycle 300 A / 22.0 V
60% duty cycle 250 A / 20.0 V
100% duty cycle 200 A / 18.0 V 200 A / 18.0 V
Power factor at maximum current
TIG 0.96 0.98
MMA 0.96 0.99
Apparent power I2at
maximum current
11.6 kVA 6.6 kVA
Active power I2at maximum
current
11.2 kW 6.6 kW
Efficiency at maximum current
TIG 83% 83%
MMA 86% 86%
Open-circuit voltage U0
max
48 V 48 V
Open-circuit voltage U0
max with VRD 35 V activated
34 V 34 V
UPK 12.4 kV 12.4 kV

3 TECHNICAL DATA
0463 416 101 - 10 - © ESAB AB 2022
ET 300i (0445 100 900, 0445 100 904), ET300iP(0445100920, 0445 100 924)
Operating temperature -10 to +40°C (+14 to +104°F)
Transportation temperature -20 to +55°C (-4 to +131°F)
Continual sound pressure
at no-load
< 70 db (A)
Dimensions l×w×h 460×200×320 mm (18.1×7.9×12.6in.)
Weight with cooler
without cooler
26.6 kg (58.6lb)
16.8 kg (37.0 lb)
Isolation class transformer F
Enclosure class IP23
Application class
Mains supply, Ssc min
Minimum short circuit power on the network in accordance with IEC 61000-3-12.
Duty cycle
The duty cycle refers to the time as a percentage of a ten-minute period that you can weld or
cut at a certain load without overloading. The duty cycle is valid for 40°C/104°F, or below.
Enclosure class
The IP code indicates the enclosure class, i.e. the degree of protection against penetration
by solid objects or water.
Equipment marked IP23 is intended for indoor and outdoor use.
Application class
The symbol indicates that the power source is designed for use in areas with increased
electrical hazard.

4 INSTALLATION
0463 416 101 - 11 - © ESAB AB 2022
4 INSTALLATION
The installation must be carried out by a professional.
CAUTION!
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.
4.1 Location
Position the power source so that its cooling air inlets and outlets are not obstructed.
A. Minimum 200 mm (8 in.)
B. Minimum 200 mm (8 in.)
WARNING!
Secure the equipment - particularly
if the ground is uneven or sloping.
4.2 Lifting instructions
Mechanical lifting must be done with both outer handles.

4 INSTALLATION
0463 416 101 - 12 - © ESAB AB 2022
4.3 Mains supply
NOTE!
Mains supply requirements
This equipment complies with IEC 61000-3-12 provided that the short-circuit power
is greater than or equal to Sscmin at the interface point between the user's supply
and the public system. It is the responsibility of the installer or user of the equipment
to ensure, by consultation with the distribution network operator if necessary, that
the equipment is connected only to a supply with a short-circuit power greater than
or equal to Sscmin. Refer to the technical data in the TECHNICAL DATA chapter.
The power source will automatically adjust to the supplied input voltage; make sure it is
protected by the correct fuse rating. A protective earth connection must be made, in
accordance with regulations.
1. Rating plate with supply connection
data
Installation of mains cable
NOTE!
The power source is delivered with a 4×2.5mm2mains cable and a 16A mains plug
which in combination can handle the rated data given for 3-phase 380–415V mains
supply. If other mains voltage is required, the mains cable may be changed
according to relevant national regulations. For recommendations, see section
Recommended fuse sizes and minimum cable area.

4 INSTALLATION
0463 416 101 - 13 - © ESAB AB 2022
1. Remove the side panel.
2. If tightened, release the stopping block (A).
3. If a cable is connected, disconnect all wires, cut the cable tie (D), and remove the
cable.
4. Optional: The fan with foam can at this point be removed to simplify the installation.
Note the direction of the fan (the sticker towards the inside).
5. Strip the new wire according to specification (B).
6. Insert the cable with about 1 cm (0.4 in.) of isolation inside the stopping block. Tighten
the stopping block by using 1.5–2Nm (13.3–17.7in.lb) (A).
7. Use two cable ties to fasten the cables (D).
8. Optional: If the fan with foam has been removed it shall now be re-installed. A symbol
on the side of the fan (G) shows the air flow direction.
9. Install the ferrites and connect the earth wire (C). A toothed washer should be located
closest to the heat sink. Tighten the screw to a torque of 6.0±0.6Nm
(53.1±5.3in.lb).
10. Connect all wires in accordance with illustrations for 1-phase and 3-phase. Tighten the
screw to a torque of 1.0±0.2Nm (8.9±1.8in.lb).
11. Ensure that the IP shield is correctly mounted on the inside of the side panel (E).
12. Reassemble the side panel (F).
13. Tighten the screws on the side panel with 3±0.3Nm (26.6±2.7in.lb).

4 INSTALLATION
0463 416 101 - 14 - © ESAB AB 2022
3-phase
1-phase
WARNING!
In 1-phase operation the terminal L3 is powered, even though not connected.
Make sure to keep terminal L3 disconnected.

4 INSTALLATION
0463 416 101 - 15 - © ESAB AB 2022
4.4 Recommended fuse sizes and minimum cable area
Recommended fuse sizes and minimum cable area
ET300i, ET300iPET300i, ET300iP
3~ 50/60Hz 1~50/60
Hz
Mains voltage 230V 380V 400V 415V 480V 230 V
Mains cable area 4×4 mm² 4×2.5
mm²
4×2.5
mm²
4×2.5
mm²
4×2.5
mm² 3×6 mm²
Maximal current rating
Imax
MMA 30A 18A 17A 16A 14A 29A
I1eff
MMA 19A 11A 11A 10A 9A 29A
Maximal current rating
Imax
TIG 22 A 13 A 12 A 12 A 10 A 20 A
I1eff
TIG 14 A 8 A 8 A 7 A 7 A 16 A
Fuse
anti-surge
typeC MCB
20A
25A
16A
16A
16A
16A
16A
16A
10A
16A
35A
32A
Maximum
recommended
extension cord length
100m/
330ft.
100m/
330ft.
100m/
330ft.
100m/
330ft.
100m/
330ft.
100m/
330ft.
Minimum
recommended
extension cord size 4×4 mm² 4×4 mm² 4×4 mm² 4×4 mm² 4×4 mm² 3×6 mm²

4 INSTALLATION
0463 416 101 - 16 - © ESAB AB 2022
NOTE!
Different variants of ET300i and ET300iP are certified for different mains voltage.
Always refer to the rating plate for the specification of the power source in use.
NOTE!
The mains cable areas and fuse sizes as shown above are in accordance with
Swedish regulations. Use the power source in accordance with the relevant national
regulations.
1-phase 230V mains voltage with 16A mains fuse
See table below for informative data for use at 1-phase 230V mains voltage with 16A mains
fuse. A 16A mains fuse may enable the use of a 16A mains plug in combination with a
3×2,5mm2mains cable.
MMA 1~ 230 V 16 A
25% 60% 100%
I2200 A* 150 A 120 A
U228.0 V 26.0 V 24.8 V
Imax 28.2 A 20.2 A 15.3 A
Ieff 14.1 A 15.6 A 15.3 A
TIG 1~ 230 V 16 A
60% 100%
I2200 A* 170 A
U218.0 V 16.8 V
Imax 19.1 A 15.3 A
Ieff 14.8 A 15.3 A
*) Porcelain fuses are recommended to achieve 200A in MMA and TIG mode. MCB fuses
break the circuit faster than porcelain fuses.
Supply from power generators
The power source can be supplied from different types of generators. However, some
generators may not provide sufficient power for the welding power source to operate
correctly. Generators with Automatic Voltage Regulation (AVR) or with equivalent or better
type of regulation, with rated power 20 kW, are recommended.

5 OPERATION
0463 416 101 - 17 - © ESAB AB 2022
5 OPERATION
5.1 Overview
General safety regulations for handling the equipment can be found in the chapter
"Safety". Read it through before you start the equipment.
NOTE!
When moving the equipment use intended handle. Never pull the cables.
WARNING!
Electric shock! Do not touch the workpiece or the welding head during operation!
5.2 Connections and control devices
1. User interface, see chapter CONTROL
PANEL.
7. Gas supply input
2. Connection (+): TIG: Return cable
MMA: Welding cable or return cable
8. Mains power supply switch, O/I
3. Gas supply output 9. USB connection
4. TIG torch trigger 10. Connection for cooling unit
5. Connection (-): TIG: torch MMA: Return
cable or welding cable
11. Mains cable
6. Connection for remote control unit
(Both digital and analogue remote
control units can be used together with
the power source.)

5 OPERATION
0463 416 101 - 18 - © ESAB AB 2022
NOTE!
When connecting a gas hose to the gas supply input, it must be secured using a
hose clamp.
NOTE!
Always use the cover when the USB connection is not in use.
5.3 TIG welding
TIG welding melts the metal of the workpiece, using an arc initiated from a
non-consuming tungsten electrode. The weld pool and electrode are protected
by a shielding gas that usually consists of an inert gas.
For TIG welding, the welding power source shall be supplemented with:
• a TIG torch
• a gas hose connected to the gas supply input (using a hose clamp)
• an argon gas cylinder
• an argon gas regulator
• a tungsten electrode
• a return cable (with clamp)
5.4 MMA welding
MMA welding may also be referred to as welding with covered electrodes. The
arc melts the electrode as well as a local part of the workpiece. The coverage,
when melting, forms a protective slag and creates a shielding gas to protect the
weld pool from atmospheric contamination.
For MMA welding the power source shall be supplemented with:
• welding cable with electrode holder
• return cable with clamp
5.5 Connection of welding and return cables
The power source has two outputs, a positive welding terminal (+) and a negative welding
terminal (-), for connecting welding and return cables. The output to which the welding cable
is connected depends on the welding method or type of electrode used.
Connect the return cable to the other output on the power source. Secure the return cable's
contact clamp to the work piece and ensure that there is good contact between the work
piece and the output for the return cable on the power source.
• For TIG welding, the negative welding terminal (-) is used for the welding torch and the
positive welding terminal (+) is used for the return cable.
• For MMA welding, the welding cable can be connected to the positive welding terminal
(+) or negative welding terminal (-) depending on the type of electrode used. The
connecting polarity is stated on the electrode packaging.
5.6 Turning the mains power on/off
Turn on the mains power by turning switch to the ”I” position.
Turn the unit off by turning the switch to the ”O” position.

5 OPERATION
0463 416 101 - 19 - © ESAB AB 2022
Whether the mains power supply is interrupted or the power source is switched off in the
normal manner, weld programs will be stored so that it is available next time the unit is
started.
CAUTION!
Do not turn off the power source during welding (with load).
5.7 Connect to cooler EC 1000
NOTE!
Take care so that the interface cable does not get squeezed between the power
source and the cooling unit!
NOTE!
Power supply of the cooling unit is done from the welding power source via the
connection cable (for more information, see the cooling unit instruction manual).
5.8 Fan control
The power source has an automatic thermal control. The fan continues to run during a few
minutes after welding has stopped while the power source switches to energy-saving mode.
The fan starts again when welding restarts.
During energy-saving mode the fan will start occasionally and run for a few minutes.

5 OPERATION
0463 416 101 - 20 - © ESAB AB 2022
5.9 Thermal protection
The power source includes thermal protection against overheating. When
overheating occurs the welding is stopped and overheating indicator on the
panel will be lit and an error message shows in the display. The protection is
automatically reset when the temperature has been sufficiently reduced.
5.10 Voltage reducing device (VRD)
The VRD function ensures that the open-circuit voltage does not exceed 35V
when welding is not being carried out. This is indicated by a lit VRD indicator on
the panel. Contact an authorised ESAB service technician to activate this
function.
5.11 Remote control
Connect the remote control on the rear side of the power source and activate the
remote control by pressing the remote control button on the panel (remote
control indicator being lit when activated). When the remote control is activated
the control panel is locked for interaction but displays welding data.
5.12 USB connection
Always use the USB cover when the USB connection is not in use.
Do not use for charging units such as mobile phones.
The welding process is blocked when a USB flash drive is connected. The USB
connection can be used to retrieve welding statistics. The statistics contains of
total number of welds performed, total welding time and average current.
Retrieving welding statistics
Always make sure that the power source is not used for welding when retrieving
welding statistics.
1. Insert an empty USB flash drive into the power source USB connector.
2. To confirm that the power source has read the USB flash drive, the text
"USB" flashes in the display for a moment, after which the text "USB" is
shown with fixed light.
3. When the text "USB" is shown with fixed light: Remove the USB flash
drive from the USB connector.
4. The USB flash will contain a text file (.txt) with the welding statistics.
5. Recommended program for opening the text file is Microsoft WordPad
or Microsoft Word.