- The Edon welding machine (TB-250) is a portable DC inverter for Manual Metal Arc (MMA) or Stick welding. The “250” in the model name indicates its nominal or maximum peak output, placing it in the light-to-medium-duty class suitable for hobbyists and light professional work. It appears to be a compact, single-phase machine, part of a common series of Edon welders that prioritize portability and ease of use. Key Specifications (Edon TB-250) Feature Typical Specification Note Welding Process MMA (Stick/Shielded Metal Arc) DC Inverter Uses coated electrodes. Technology IGBT Inverter Technology Ensures stable arc and high efficiency in a small package. Input Voltage Single Phase,AC 220V(±15%)/50-60 Hz Plugs into standard household power. Current Range 20 A−120 A (Rated continuous output) While nominally “250,” the typical continuous working range is lower, which is common for single-board, mini-inverters. Maximum Peak Output Up to 250A (Peak) Maximum momentary current output. Rated Duty Cycle 60% @ 120A Can weld continuously for 6 minutes out of a 10-minute period at the rated 120A current. Input Power Capacity ∼4.7 KVA Maximum power consumption. No-Load Voltage (V) ∼65V Ensures easy arc striking. Usable Electrode Size 1.0 mm to 3.2 mm Ideal for 2.5mm and 3.2mm electrodes.
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