Preheating power supply and welding power source interconnection cable to control weld current in a preheating system

• Main Authors: UECKER JAMES LEE, SCHARTNER QUINN WILLIAM
• Format: Patent
• Language: Chinese; English
• Published: 10.04.2020
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

A preheating power supply (208) and an interconnection cable (304) are disclosed. A preheating power supply (208) includes power conversion circuitry configured to output welding-type power via a first output power connector (230) and a second output power connector (220), and a bypass path prevention circuit (302) configured to prevent less than a threshold voltage applied to the first output power connector and the second output power connector from a different power supply from causing current to flow between the first output power connector (230) and the second output power connector (220). 公开了预热电源(208)和互连电缆(304)。预热电源(208)包括：电力转换电路系统，其配置为经由第一输出电力连接器(230)和第二输出电力连接器(220)来输出焊接型电力；以及旁路路径防止电路(302)，其配置为防止从不同电源施加到第一输出电力连接器和第二输出电力连接器的小于阈值的电压使电流在第一输出电力连接器(230)和第二输出电力连接器(220)之间流动。