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Hybrid 600 UW - Hyperbaric - Hyperbaric Welding Equipment

Hyperbaric Tunneling

Hybrid 600 UW - Hyperbaric

600 A electronically regulated welding power source for welding and cutting in wet and dry hyperbaric environment..

The system concept consists of: power source, wire feeder, cooling unit, remote control, heating mats, welding torches and accessories.

The units are built to EN 60974-1 and meet the additional requirements of welding power sources for underwater wet welding. They may be used during intended use and in compliance with applicable regulations and rules for welding under
water and under excess pressure !

System advantages

  • emergency shutdown
  • low open circuit voltage
  • User friendly
  • Multifunctional by GMA, MMA, Heating
  • compact design
  • high process stability
  • adjustable Arc-Force
  • adjustable Hot-Start
  • 100% generator-compatible
  • high efficiency
  • high reliability

Technische Daten

Hybrid 600 UW - Hyperbaric
Mains voltage 3 x 400V o.MP, 50 Hz
Mains voltage fluctuation +/- 10%
Power consumption 27 KVA
Power factor cos. phi ca. 0.98
Efficiency > 85 %
Open circuit voltage max. 60 V
Welding current range 20 A – 600 A
Welding voltage range 10 V - 50 V
Duty cycle ( no filter mat) 60 % (25°C)
Dimensions Power source (h-w-d) 400 x 400 x 700 mm
Weight power source (no. periphery)
95 Kg

Our power sources are labeled with CE- and S-Symbol according to EN 60974-1. They are made in Germany.

Device concept

The Hybrid 600 UW - Hyperbaric was developed specifically for welding and repair work in hyperbaric and wet environment. (eg. tunnel boring machine). In developing the system, the valid rules and regulations and the AMT safety concept for under water welding machines have been applied.

In conjunction with the associated welding peripherals which was exactly matched to the increased requirements of the welding personnel to the hyperbaric welding and wet underwater welding, the Hybrid 600 UW - Hyperbaric represent with their newly developed control concept the optimal system technology for over pressure welders.

That from AMT developed and since years approved AMT safety concept for UW devices provides a maximum protection for the welder (divers) against electrical hazards.

For safety, the power source must never be used in direct over pressure range. All for the process necessary interconnections are routed through a panel mounting in the hyperbaric workspace and distributed to the peripherals. In hyperbaric work area as the wire system are composed of wire drive and push-pull unit, cooling unit, remote control and auxiliary equipment. By integrating the different methods (GMA welding, MMA welding, electrode cutting, gouging, and heating) in a facility, allows the user to perform all the work by preheating about cutting up to welding in a single dive (pressure) operation. The operation of the control system is done by the welder or his assistant over a remote control locally in the hyperbaric range.

Fields of application


New developed GMA control concept for short-, normal- and spray arc welding with low spattering under pressure with solid wires of 0.8 to 1.6 mm and flux cored wires from 1.0 to 2.4 mm diameter. Highest process stability by AMT - HYBRID technology.

- MMA:

Optimal properties with high precision direct current for all types of electrodes from acid to basic.  Integrated hot-start and arc-force function ensured best welding results in all welding positions. Large power reserves for special electrodes with more than 100 % deposition rate.

- Gouging:

Due to the high energy levels and the associated high short-circuit currents of about 1000 A very good properties in arc cutting and gouging.

- Heating:

Using the integrated heat program and associated heating mats, can be to prevent stress cracking of the weld area preheat partially.

AMT - Safety concept

to protect the welder (diver) against electrical accidents
- fulfills the guidelines „BGV-D1“ and „Code of Practice for the Safe Use of Electricity under Water“
- enhanced protection due maximum open circuit voltage of 60 V-dc (permissible according to BGV: 65 V-dc)
- external emergency stop for fast network-based shutdown in case of danger
- passive idle voltage limitation due to secondary switched construction
- Active idle voltage limitation at power fluctuations through special electrical suppressor
- Output voltage limit of 15 V-dc at inactive welding process or break in the arc
- external enable switch for disconnection the power electronics
- set point dependent enable power part > 20 A
- electronic mains over voltage protection



Hong Kong

To our Patents »

1. An apparatus for arc welding under high pressure conditions includes a power supply device (10) for providing a welding current and a welding voltage, a partition for forming a welding chamber (13) with a welding portion (14) ( 11) A welding device (15), which is arranged in the welding chamber (13) and is connected to the power supply device (10) via a partition (11) via electrical connection lines (16, 16', 16"). The power supply device (10) is set under atmospheric pressure, and the welding chamber (13) is under high pressure, wherein the partition (11) separates the atmospheric region from the high pressure region, wherein a control device (21) is provided in the welding chamber (13), by means of which the power supply device (10) can be controlled.

8. A method for operating a device according to any one of claims 1 to 7 with a welding device (15), using this method for arc welding in a high-pressure atmosphere, the method having the following method steps: welding rod (29) is continuously fed; - Welding current is supplied to the workpiece via the welding rod (29) and the arc (40), wherein the current intensity is adjusted to a constant first value.


8.一种用于使得带有焊接设备(15)的如权利要求1~7中任一项所述的装置工作的方法,采用该方法在高压气氛中进行电弧焊接,该方法具有如下方法步骤: - 连续地进给电焊条(29); - 提供经由电焊条(29)和电弧(40)流至工件的焊接电流,其中,把电流强度调节至恒定的第一值。