SJ / T 31401-1994 | High Voltage Switchgear integrity requirements and inspection evaluation method DL / T 791-2001 | inflatable indoor AC switchgear guide for the selection DL 404-1991 | Indoor AC High Voltage Switchgear order technical conditions DL / T 404-1997 | Indoor AC High Voltage Switchgear order technical conditions DL / T 539-1993 | indoor AC high voltage switchgear and Components condensation and contamination test technical condition TB / T 2010-1987 | 27.5kV switchgear AC electrified railways technical conditions DL / T 404-2005 | Indoor AC High Voltage Switchgear order technical conditions Switchgear common classification 1, low-voltage switch cabinet 2, 3 AC low voltage distribution cabinet, metal armored withdrawable switchgear 4, low fixed 5 segregated switchgear, high voltage capacitor cabinet 6, High Voltage Switchgear Switchgear About switchgear is an electrical device, outside into the cabinet first master switch low voltage principle, then enter the sub-control switch low voltage how to use each Tap according to need. Low voltage switch equipment such as instrumentation, automation, motor magnetic switch, all kinds of exchanges and contacts, and some also set up the high-pressure chamber and the low-voltage switchgear room with high-voltage bus, such as power plants, and some also have to protect the main low cycle load shedding equipment. low voltage switch procurement, learning Connaught Electrical and Mechanical (certified), low voltage is provided by habit Connaught Mechanical and Electrical Equipment Co., Ltd., Henan. Henan Xi Connaught Electrical Equipment Co. (www.hnxinuo.com) is Zhengzhou, electronics, electrical products processing leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In practice Connaught Electrical and Mechanical leadership with the staff warmly welcome all inquiries negotiations to create learning Connaught Electrical and Mechanical better future.