1.2 SS1200 Inverter Control Electrician Schematic
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1.3 Application 
Commonwealth SS1200 three-phase AC barrel welding controller a leap in energy-saving technology
1.0 Introduction
Comparison of AC and DC Barrel Seam Welds
Since 1990, the British Commonwealth barrel welder has started a single-phase DC welding machine to reduce the large primary power installation and operating costs required for conventional single-phase AC welding.
Single-phase AC welders generally require: 380 V + 600 amps primary power supply, power factor 0.3.
In recent years, for the same reason, the three-phase DC welding with 1000Hz intermediate frequency inverter control has been promoted, so that the three-phase power supply load balance used is more effective.
According to the federal company's decades of operational experience in barrel welding, high-speed AC barrel welding is usually not sensitive to the adjustment of mechanical parameters or changes in the specifications of steel materials; when using single-phase DC welding, the two must be very precise control. To ensure stable welding quality.
SS1200 controller is a new inverter welding control device, which uses the latest technology of high-power IGBT and electronic components, so that the AC output barrel welding, in the installation and application costs, as much as possible with the original DC welding. Give the user with The revolutionary changes to save energy and increase efficiency.
1.1 General description
â— The provided SS1200 controller is an independent floor-standing electrical cabinet assembly configured with a main circuit breaker for connecting a conventional single-phase AC bucket welder transformer and a three-phase power supply; it consists of the following elements:
◠Power supply control: It is composed of a bridge rectifier, a DC capacitor bank, and a transistor [IGBT`S—an isolation gate bipolar (field effect) high power transistor group used in an inverter] and a driving circuit system.
The power supply converts the three-phase AC provided by the primary into DC, and then converts it into a single-phase AC for the welding transformer.
â— Microprocessor control: Used for the operator to program welding parameters.
The unit uses all the output and input signals that are not transmitted and received digitally regulated by the respective welding current and frequency, fed back through the transformer and primary current to ensure that the required welding current is supplied.
SS1200 welding current control curve
â— Welding Electrical: 380 V, 50 Hz
A three-phase power supply, grounded externally, is connected to the plant power grid via HRC fuses and the primary current rating for continuous operation is 200 amps.
â— Controller Electrical: A 24 Vdc, factory supplied.
â— Water: The factory provides a water inlet pipe,
The highest inlet temperature is 25°C.
The minimum flow rate is 6 litres of clean water per minute.
A return pipe from the outlet pipe to the factory.
1.4 Advantages of SS1200 Other Control Systems
â—‹ Three-phase connection - Power balance
â—‹ About 60 % reduction in electricity consumption
â—‹ Increased power factor COSÑ„ to 0.98
â—‹ Excellent welding quality with full sine wave
â—‹ High quality boundary welding with precision start
â—‹ Constant current control regardless of electrode status or material resistance
â—‹ Due to higher welding frequency, the heating area is smaller
â—‹ Improved welder life
â—‹ Simplified welding controller setting
â—‹ can be connected to a standard AC transformer
2.0 security
â— The SS1200 conforms to the EU (European Community) safety rules to enhance the conformity of the required CE certificate; it is matched with the barrel welder of the Commonwealth/Federal Welder Company.
3.0 Installation, Delivery, and Training
â— The controller requires three-phase power. The provided controller itself is a shell with a shell that can be placed in its original position or near the original control cabinet.
4.0 Quality Assurance
From the date of final delivery, provide a one-year operating quality guarantee, or due to the non-federal welder company's reasons, causing the controller to delay the delivery of the use of events, since the delivery period, the quality of the guarantee period of 30 days; depending on that kind of earliest To choose.
5.0 Information
â— An English version of the operation manual will be provided, including:
â— Adjustment/calibration steps,
â— Programming steps,
â— Electrical schematics.
SS1200 appearance picture
Size: width × depth × height (mm) 1000 × 400 × 2000
Color: Light gray RAL7032