high performance machines

MINING and OFF-SHORESOLUTIONS

UNDERGROUND MINES

OPEN MINES/OFF-SHORE

TECHNICAL DATA

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STEL.Di più di quello che chiedi.Siamo sempre stati spinti da un’idea molto semplice. Soddisfarti.

Per questo abbiamo pensato fin dal primo momento a fornirti tutti gli strumenti di cui avevi bisogno, ci siamo fatti ispirare dalle condizioni estreme in cui ti trovavi, dovunque tu fossi, sopra o sotto terra, in una miniera o su una piattaforma petrolifera in mezzo al mare, sotto il sole e nella polvere o a lavorare il metallo all’interno di un’industria.

Da oltre trentacinque anni continuiamo a sviluppare le nostre saldatrici, perfezionandone ogni dettaglio elettronico, meccanico, estetico, per ottenere la migliore efficienza energetica e la massima performance in qualsiasi ambiente di lavoro.

L’unica cosa che ci soddisfa, oggi come ieri, è farti avere di più di quello che chiedi

STEL in Castegnero.Dove tradizione e innovazione si saldano insieme.

Dal mix vincente di tradizione italiana e innovazione tecnologica è nata Stel nel 1979 a Castegnero, a pochi chilometri da Vicenza. Qui le colline verdi, le architetture rinascimentali e la bellezza dei paesaggi hanno contaminato l’ambiente aziendale e la famiglia Barocco, che ha fondato e continua a dirigere un’azienda sempre all’avanguardia tecnologica nella produzione di Inverter Welding and Plasma Cutting Machines.

Una realtà snella e dinamica, attraverso la quale mettiamo a tua disposizione il nostro know how, producendo strumenti subito riconoscibili, oltre che per la qualità anche per l’impatto estetico di un design ergonomico e ricercato.

STEL.More than what you askFrom STEL we always give you more than what you ask for.

We have always been driven by a very simple idea, and that is to satisfy you. For this reason we decided from the start, to give you the tools you require, STEL are inspired by the extreme conditions in which you work, wherever you are, above or below ground, in a mine or on an oil rig in the middle of the sea, in the sun and the dust or working within an industrial factory.

For over thirty five years we have continued to develop our machines, perfecting every detail, electronic, mechanical, aesthetic, to obtain the best energy efficiency and maximum performance in any working environment.

The only thing that satisfies us at STEL today, as in the past, is to give you what you ask for, and more.

STEL in CastegneroWhere tradition and innovation are welded together.

The positive mix, of Italian tradition and technological innovation was born in Stel in the year 1979 in Castegnero, a few kilometers from Venice. Here the green hills, the architecture Renaissance and the beauty of the landscapes have blended into the environment, which is corporate to the Barocco family. These company founders continue to direct STEL forward in advanced technology, in the production of Inverter Welding and Plasma Cutting Machines.A streamlined and dynamic reality, through which we put at your disposal our know-how, production and testing facillities, which are immediately recognizable for their quality including the aesthetic impact, ergonomic and attractive design.

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Customer respectTechnical requirements, business needs and conditions of sale are scrupulously met to the minimum detail. Each contract with us is an absolute guarantee, Stel does not only offer the most sophisticated technologies on the market, but Stel is respectfully synonymous to all mandatory agreements.

Environmental compliance. Our production facillities, assemblies and processes satisfy rigorous global environmental protection. To ensure that this essential form of respect towards the world we live in, STEL continuously perform rigorous internal controls in parallel to that carried out by the relevant authorities.

Machines equiped with a PFC Multi-LinkTM system reinforces our commitment towards energy saving. We never tire of reminding STEL personel to be aware of the STEL environmental ‘foot-print’ STEL continue to provide our customers with products that have a positive environmental impact.

Regulatory compliance. We are one of the few manufacturers in the world to submit their machines to rigorous examination of the strongest Testing Institute around the world.

Furthermore, our production is approved by CSA International (based on ISO / IEC 17025: 2005) for export to North America. While our technical office has been Certified ISO / IEC 17025: 2005. Therefore, from the compliance of these regulations is determined reliability, safety with newest operational functions and Features that distinguish STEL in the global market.

Values.Respect first.Stel is your trusted partner, we at STEL understand the meaning of the word respect.

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TechnologiesApproved to exceed the limits!

Reliability and performance are our obsession. The pursuit of perfection is extreme in every detail, from the production to the calibration has brought STEL machines to meet the highest international criteria of resistance and functionality, being recognized as exclusive products suitable for extreme use.

Every year we reinvest 10% of our turnover to develop product performance and make more environmentally efficient.

International market.STEL experience has no geographical limits.

Our reliability is recognized worldwide. Our products are present on all continents, thanks to a global professional network of established partners.The continued international expansion has led us to open offices in Germany, Poland and Turkey.

Application areas. Whatever your needs, wherever you operate, STEL recognise the world as our field of application.

From the daily engagements with our domestic and international customer base this opens up to STEL each individual need and challenges. This results with STEL having developed the perfect machine for your market sector required for operating in a specific professional welding environment.

UNDER GROUNDMINES

STEL is the only manufacturer in the world to produce welding machines approved for use in mines

STEL / UNDERGROUND MINES8

IP44/54 PROTECTION:IP54 with protection against water spray and dust, Dielectric Strength after 300 hours testing at 90% Humidity.

• Moving Part: Protection from voltage and moving parts for people who come in contact with the enclosure.

• Humidity: Protection from 360° water spray. This robust welding machine is designed to operate in extreme environments especially where severe dust and water prove hazardous.

• Dust: Protection for the enclosed equipment from dust and other materials such as dirt, oils and non-corrosives.

IP44: Protected against water spray and dust greater than 1.0mm. IP54: Protected against water spray and dust-tight.

• EMAG: The Institute of Innovative Techniques (EMAG) is a research and development (R&D) organisation, which conducts research, scientific and development works, and possesses expertise within electrical engineering, automation, communications, IT, sustainable consumption of fuels and energy, and environmental protection.

• CMC is accredited to perform tests according to various international standards and also carry out tests on the specifications provided by the customer. CMC has technical staff with extensive experience and expertise.

• RS The RS quality management system has been certified and issued with the certificates: National Certification body Gosstandard of Russia Certificate and Independent Certification Body SAI Global Certificate. Since 1999 RS has been recognized by the European Union and acting in accordance with Regulation (EC) 391/2009 and EN 17020.

• Inverter Technology• IP54• Inox Case• Emergency Stop Button• Digital Display• Arc-Force & Inductance Adjustable• VRD (set)• Rod Pulse (Remote)• Multiprocess

The MAX 503 for underground mines is the Best solution for safety, portability and reliability on the worst known welding environment. Simple, powerful MAX 503 can handle almost any portable welding application.• IP54. The ONLY welder to have obtained this Degree of Protection.• WDC. Possibility to connect at MIG feeder in IP54 (TOP 504 OFF-

SHORE) with Wave Digital Channel technology for communication.

• VRD (set). An internal dip switch enables reduced open-circuit Stick welding capability. OCV is typically below the 20 volts with this function.

• Superior Stick performance, even on difficult-to-run electrodes with adjustable Arc-Force and HOT-start features.

• Digital Display. With the digital display its easy to view and pre-set with ease the welding parameters.

• Lift-Arc provides TIG ignition without the use of the high-frequency. Ignites the arc without contamination of the weld and the tungsten electrode.

• INOX case. The best material (INOX 304) for the maximun durability in a high humidity environment. (This includes external screws).

• Multiprocess Power Source. MIG/MAG, Synergic MIG/MAG, Synergic Pulse & Double-Pulse MIG/MAG, TIG lift and STICK process.

MAX 503 IP54 ATXMAX 503 IP54 ATX wDC

STEL / UNDERGROUND MINES10

THOR 93 IP54 ATXThe series of THOR ATX Inverter Plasma Cutting machines are manufactured from STEL experience together with advanced technology to provide the maximum reliability and cutting performance.

THOR 93 IP54 ATX of 85 amps, produces the following cutting performance:• Reccomended Cut: 20mm (500mm/min)• Quality Cut: 25mm (250mm/min)• Maximun Separation Cut: 35mm

• Reset the “Reset” feature is a Safety function that automatically isolates the machine whilst changing consumables, therefore providing added protection to the operator. The Arc can not be ignited while “Reset” warning is activated.

• IP54. The ONLY welder to have obtained this Degree of Protection.• INOX case. The best material (INOX 304) for the maximun durability in a high humidity

environment. (This includes external screws).

• Inverter Technology• IP54• Inox Case• Emergency Stop Button• Digital Display• Long-Life Consumables• 85 Amps

wDC SySTEMIncorporated is an Intelligent Waves System Patented by Stel for transmitting Data between Power Supply and Wire Feeder via lightweight Interconnecting Cables.

The signals are transmitted through the Waves System by way of two very small wires.

With this Patented Waves System it is possibile to add extensions of 10m each, up to 20m long utilising Euro Connections that are very quick and simple to connect or replace.

Copper of the Power Conductor

External Insulation

Motor Wires with Wave Connections

Gas Tube

WDC System with gas

• Inverter Technology• IP54• Emergency Stop Button• Inox Case• PFC Multi-LinkTM

• Digital Display• Arc-Force & Inductance Adjustable• VRD• Multiprocess

The new serie of MAX for operating in underground mines offers the best solution for safety, portability and reliability within the worst known welding environment.Simple and powerful, the MAX 171 IP54 ATX series can handle almost any portable welding application.• IP54. The ONLY welder to have obtained this Degree of Protection.• VRD (set) .An internal dip switch enables reduced open-circuit Stick welding capability.

OCV is typically below the 20 volts with this function.• Superior Stick performance, even on difficult-to-run electrodes with adjustable Arc-

Force and HOT-start features.• Digital Display. With the digital display its easy to view and pre-set with ease the

welding parameters.• Lift-Arc provides TIG ignition without the use of the high-frequency. Ignites the arc

without contamination of the weld and the tungsten electrode. • INOX case. The best material (INOX 304) for the maximun durability in a high humidity

environment. (This includes external screws).• PFC Multi-Link

TM

. For the MAX 171 IP54 ATX version the Multi-LinkTMtechnology provides for connection of the power source to any 1phase plug wihout any manual operation from 90V to 290V 1phase.

MAX 171 IP54 ATX

OFF SHORE

OPEN MINES

STEL / OPEN MINES and OFF-SHORE12

• Inverter Technology• PFC Multi-LinkTM(Only for 403S)• Multiprocess• Digital Display• Arc-Force & Inductance Adjustable• VRD• Rod Pulse (Remote)

The operator friendly, powerful MAX 403 and 403S models can handle almost any portable welding application. Add a wire feeder to suit any applications MIG/ MAG.• Lift-Arc provides TIG ignition without the use of the high-frequency. Ignites the arc

without contamination of the weld and the tungsten electrode. • Maintains the desired temperature without having to stop welding to add more heat. • VRD. An internal dip switch enables reduced open-circuit Stick welding capability. OCV

is typically below the 20 volts with this function. • Superior Stick performance, even on difficult-to-run electrodes with Arc-Force and

HOT-start adjustable• Digital Display. With the digital display its easy to view and pre-set with ease the

welding parameters.. • CC/CV function. (only for 403/403S) Connect with any Suitcase type Wire Feeder.• Multiprocess Power Source. MIG/MAG, Synergic MIG/MAG, Synergic Pulse & Double-

Pulse MIG/MAG, TIG lift and STICK process.• PFC Multi-Link

TM

. For the 403S version the Multi-LinkTMtechnology provides for connection of the power source to any 3phase plug wihout any manual operation from 200V to 575V 1/3phase.

• Inverter Technology• 14 Ways Mono Cable• 100m Extensions Cables• PFC Multi-LinkTM(Only for 403S)• Wire Speed control from remote• Electrovalve control from remote• Digital Display• Arc-Force & Inductance Adjustable• VRD• Rod Pulse (Remote)• Synergic

The operator friendly, powerful MAX 403 and 403S models can handle almost any portable welding application. Add a wire feeder to suit any applications MIG/ MAG.• ST-Arc technology. Automatically compensating for any change in the welding

conditions owing to workpiece position or operator’s hand movements.• Maintains the desired temperature without having to stop welding to add more heat. • VRD. An internal dip switch enables reduced open-circuit Stick welding capability. OCV

is typically below the 20 volts with this function. • Superior Stick performance, even on difficult-to-run electrodes with Arc-Force and

HOT-start adjustable• Digital Display. With the digital display its easy to view and pre-set with ease the

welding parameters.. • CC/CV function. Connect with any Suitcase type Wire Feeder.• Synergic. Available with Synegic Programs for MIG/MAG welding. • Rod-Pulse. The unique STEL technology for Electrode pulsing. Ideal for Pipe welding,

vertical up and regulated penetration.• PFC Multi-Link

TM

. For the 403S version the Multi-LinkTMtechnology provides for connection of the power source to any 3phase plug wihout any manual operation from 200V to 575V 1/3phase.

MAX 403MAX 503

MAX 403 NAVyMAX 403S NAVy

CC-CV

STEL / OPEN MINES and OFF-SHORE14

Sky-MIG 453k Sky-MIG 553S

• Synergic• Digital Display• 4 Roll feed• 2 T/ 4 T Mig/Mag Welding

Traditional Tapped Transformer Power Source SYNERGIC. Simple and precise with 30 Voltage steps, provides the operator with a superior range and arc performance for even the most demanding applications.• Synergic. Easy-to-use synergic function with digital display to simplify set up and offer

precise settings for welding a variety of material thicknesses.• Dual Digital meters. Display clear, precise reading of arc voltage and amperage• Thermal overload protection. Shuts down the power source output in the event of

overheating of either the main transformer or rectifier occurs.

THOR 123The series of THOR Inverter Plasma Cutting machines are manufactured from STEL experience together with advanced technology to provide the maximum reliability and cutting performance. THOR 123 of 100 amps, produces the following cutting performance:• Reccomended Cut: 25mm (500mm/min)• Quality Cut: 30mm (250mm/min)• Maximun Separation Cut: 40mm

• Reset The “Reset” feature is a Safety function that automatically isolates the machine whilst changing consumables, therefore providing added protection to the operator. The Arc can not be ignited while “Reset” warning is activated.

• CNC kit. For CNC interface.• Inverter Technology• Digital Display• Long-Life Consumables• 100 Amps

TIG µP 273H DC

• Inverter Technology• Digital Display• VRD• DC Pulsing

The TIG uP series of welders provides for greater portability in every industrial environment. Superior arc control and faster travel speeds deliver greater productivity and superior arc-condition while providing maximum energy efficiency compared to traditional welding machines.• Complete DC Regulation controls produce defect-free welds, improve cleaning action

and weld apparence. • Ensures proper penetration. Easily joins thick materials to thin materials for insurance

regular penetration without blowing through the thin section.• Reduced Distortion. Reduces heat input and eliminates over-welding to ensure proper

fit-up and alignment assemblies.• Pulsing ARC DC capable of 300Hz

Technical Data

Main VoltagePhaseFrequencyReal CurrentReal PowerPower FactorNo Load VoltageCurrent RangeStepsWire Feeder RollsWelding Current 20% (40°C)Welding Current 35% (40°C)Welding Current 40% (40°C)Welding Current 60% (40°C)Welding Current 100% (40°C)

MAX 403 / NAVY

400 V350/60 Hz17 A11,2 KVA0,8570 V4-400 A---400 A-350 A300 A

Technical Data

Main VoltagePhaseFrequencyReal CurrentReal PowerPower FactorNo Load VoltageCurrent RangeWelding Current 20% (40°C)Welding Current 25% (40°C)Welding Current 60% (40°C)Welding Current 100% (40°C)

MAX 403S / NAVY

230-400-460-500 V1/350/60 Hz24,5-12,5 A (16,5 - 400V)9,7 KVA (400V)0,9887 %70 V4-400 A (4-300A 1F)400 A-400 A-350 A300 A (300A 1F)

UNDE

RGRO

UND

MIN

ESOP

EN M

INES

and

OFF

-SHO

RE MAX 503

400/500 V350/60 Hz24,3/19,5 A17/13,5 KVA0,820-80V4-500 A----500 A440 A350 A

Sky-Mig 453K

380/415 V350/60 Hz23,8 A16,5 KVA0,9518,8-46,2 V30-500 A3x104500 A--450 A350 A

THOR 123

380/415 V350/60 Hz13,5 A9 KVA0,8300 V20-100 A--100 A--75 A65 A

MAX 171 ATX IP54

90/290 V150/60 Hz11 A / *10 A (with 140 A@25%)2,5 KVA0,9920 V5-150 A-150 A120 A95 A

PLASMATHOR 93 ATX IP54

MIG/MMAMAX 503 ATX IP54 WDCTOP 504 OFF SHORE

MIGSKY-MIG 453K

MIGSKY-MIG 553S

MMAMAX 171 ATX IP54

PLASMATHOR 123

MMAMAX 403/403S

Sky-Mig 553S

380/415 V350/60 Hz15,3 A10,6 KVA0,9517,3-47 V30-400 A3x104400 A-350 A250 A200 A

UNDE

RGRO

UND

MIN

ESOP

EN M

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and

OFF

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RE

TIG µP 273H DC

380/415 V350/60 Hz8,2 A5,2 KVA0,870 V4-230 A--230 A (30%)--190 A175 A

MAX 503 ATX IP54 WDC

400/500 V350/60 Hz24,3/19,5 A17/13,5 KVA0,820-80V4-500 A500 A-420 A350 A

MAX 503 ATX IP54

400/500 V (575V on request)350/60 Hz24,3/19,5 A17/13,5 KVA0,820-80V4-500 A500 A-420 A350 A

THOR 93 IP54 ATX

400/500 V350/60 Hz13,5 A9 KVA0,8300 V20-85 A--85 A50 A

Stel S.r.l. Via del Progresso, 5936020 Castegnero (VI) - ItalyTel. +39 0444 639525Fax +39 0444 639641info@stelgroup.itwww.stelgroup.it

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