Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: EN 60335-2-51:2003/A1:2008 (IEC 60335-2-51:2002/A1
• Năm ban hành / Publication date: 1970
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Household and similar electrical appliances - Safety - Part 2-51: Particular requirements for stationary circulation pumps for heating and service water installationsIEC 60335-2-51:2002
• Phạm vi áp dụng / Scope of standard: Deals with the safety of electric stationary circulation pumps intended for use in heating systems or in service water systems, having a rated power input not exceeding 300 W, their rated voltage being not more than 250 V for single-phase and 480 V for other appliances. Hydraulic and electric parts of the pump may be in the same enclosure, so that the water serves as a coolant, or they maybe seperate. This standard does not apply to pumps for circulating liquids other than water; pumps, other than circulation pumps (IEC 60335-2-41); circulation pumps intended exclusively for industrial purposes; circulation pumps intended for locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapor, or gas)