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In recent years with the growth of the economy, industry and commerce developed fast, technology parks have been established in order to ensure the security of electricity supply quality products and high-voltage electrical equipment installation and reliable use it, how to make quality and stability of the electricity power system to enhance safety and electrical equipment, to make the law provides over voltage 600V of power and distribution transformers, pressure ratio, a ratio of flow, circuit breakers and high voltage distribution panels and other equipment, the electrical properties should be set to full-time electricians or electrical equipment inspection commission in charge of the maintenance business maintenance power stability. This article is in electrical accidents usually occur experience, from the inside diameter of the line equipment specifications to determine whether defective electrical equipment or not, in order to maintain the quality of electrical equipment.
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