Weld Master India

Resistance welding transformers are specialized transformers used in resistance welding machines, such as spot welding, seam welding, and projection welding systems. Their primary function is to convert high-voltage, low-current input electrical power into low-voltage, high-current output suitable for welding.

1. Voltage Transformation
   Converts high-voltage AC (typically from mains power) into low-voltage AC (1–25 volts).

2. Current Amplification
   Delivers very high current (typically 1,000 A to 100,000 A or more) to the weld joint.

3. Short Cycle Operation
   Designed for short bursts of power (milliseconds to a few seconds), repeated in rapid cycles.

4. Durability
   Built to withstand high heat, magnetic fields, and mechanical stresses.

• Primary Voltage: Typically 220V, 400V, or 480V AC

• Secondary Voltage: 1–25V AC

• Duty Cycle: Often 50% or higher

• Cooling: Water-cooled coils and core

• KVA Rating: Typically ranges from 10 kVA to over 1000 kVA

• Automotive manufacturing

• Aerospace structures

• Metal furniture fabrication

• Battery tab welding

• Appliance assembly

• Very fast weld cycle times

• Reliable and repeatable weld quality

• Low heat input outside the weld area

• Minimal material distortion

• Limited to conductive metals (e.g., steel, aluminum)

• Not ideal for thick materials

• Requires tight electrode alignment and pressure control

Weld Master India Pedal Spot welding machine 15 KVA