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 armored remove AC metal-enclosed switchgear Usage of this switching device is suitable for 3.6 ~ 12kV three-phase AC 50Hz single busbar and single busbar system power distribution equipment, mainly used by the secondary substation power plants, small generators, industrial and mining enterprises, and electrical power distribution systems, power transmission and large high-voltage motor starting, etc., control, protect and monitoring purposes. This switch device complies with GB3906, DL404 standards and international IEC298. The switchgear can be equipped with type VD4, VB2 type, VS1 type, HVF (Hyundai), EV12 vacuum circuit breaker, with push-pull circuit breaker to prevent on-load, to prevent accidental division circuit breaker to prevent the grounding switch is in the closed position closing the circuit breaker to prevent mistakenly charged compartment to prevent mistakenly charged at the time of closing conditions 1, ambient temperature -10 ℃ to + 40 ℃ 2, Altitude: not exceeding 1000m3, humidity relative humidity: daily average of not more than 95 %, on average less than 90% 4 earthquake intensity does not exceed 8 degrees; 5, the ambient air should not be obviously polluted corrosive, flammable gas, vapor, and the like; 6, no serious contamination and recurrent severe vibration. 7, when used under normal ambient conditions than specified in this standard GB3906 and low voltage switch price, negotiated by the user and the manufacturer. 2, solid and reliable five anti-interlock device on a closed circuit breaker panel can be operated, can be seen through the viewing window in which the state circuit breaker; 3, full-featured handcart, 100% handcart interchangeability , with operating light and low voltage switch cabinet, smooth operation; 4, maintenance is simple, easy to install low voltage bus bars and cables action, can lift transport vehicles, handcarts promote low voltage switch, withdrawing and transportation is very convenient; 5, Full assembled switchgear using aluminized steel, corrosion-resistant, anti-oxidation, the use of multi-fold process, ensure rigidity and high strength. Low voltage switch sell, learning Connaught Electrical and Mechanical (certified), Shenqiu low voltage provided by the Henan learning Connaught Electrical and Mechanical Equipment Co., 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.