| 摘要 |
The present invention relates to a system for calibrating a weld tester for measuring a weld current of 4,000-8,000 A. The system includes a power supplier (110) capable of outputting a current of up to 30 A; a current meter (120) capable of measuring a current of up to 30 A; and a 500-turn coil (130) that is a current converter, wherein the 500-turn coil (130) is connected to a weld tester (101), and the power supplier (110) and the current meter (120) are connected to the 500-turn coil (130). According to the present invention, the 500-turn coil has a diameter of 1.5 mm and a resistance of 2 ohm so as to be used for a high current, and thus, the weld tester capable of measuring a current of 4,000-8,000 A can be calibrated. Furthermore, since the weld tester is easily calibrated, the quality of an Invar weld can be guaranteed and is expected to be improved. [Reference numerals] (10) Power supplier; (101) Weld tester; (120) Current meter; (130) Turn coil |
