GB20237-2006

Safety requirements of crane & metallurgical motors and canned motors

起重冶金和屏蔽电机安全要求

GB 20237-2006 ist eine gültige verbindliche chinesische Nationalnorm: Safety requirements of crane & metallurgical motors and canned motors. Branchencluster: Elektronik. Schwerpunkt: Produktsicherheit. Inkrafttreten: 1. Jan. 2007.

Die Anwendbarkeit hängt vom Produktumfang, dem Zertifizierungsweg, Bekanntmachungen der Behörden und Übergangsregeln ab. Fordern Sie eine Übersetzung an oder prüfen Sie die Quelle, bevor Sie diesen Eintrag für Compliance-Entscheidungen nutzen.

Compliance-Überblick

Dieser Überblick ist derzeit nur auf Englisch verfügbar.

Geltungsbereich und Anwendbarkeit

This standard applies to the safety requirements of crane and metallurgical motors (including eddy current brakes), elevator motors, tower cranes, and construction machinery motors. It also covers canned motors used in the petroleum and chemical industries for conveying fluids without solid particles. It is applicable to various lifting machinery, metallurgical auxiliary equipment, and power transmission equipment.

Technische Anforderungen

This standard specifies comprehensive safety requirements for the structural integrity and electrical safety of the aforementioned motors. It mandates that motors must comply with the general requirements of GB 755-2000 and maintain sufficient insulation resistance under room temperature, thermal, and damp conditions. Manufacturers must ensure that motors do not experience hazardous electrical or mechanical failures during normal use. The standard details specific structural requirements, including the mechanical strength of non-metallic components, which must be flame-retardant, heat-resistant, and moisture-proof. It sets forth strict guidelines for terminal boxes (rated below 750V), requiring a minimum protection degree of IP44 and specifying minimum thicknesses for metallic enclosures. Clearance and creepage distances are strictly regulated to prevent electrical arcing, with specific parameters varying by motor frame size and voltage rating. Furthermore, the standard outlines requirements for protective earthing devices, ensuring permanent and reliable electrical connections between the motor frame and the earth terminal. It also dictates the mechanical strength of bearing structures, slip rings, and connecting components, requiring that fasteners withstand operational mechanical stresses without loosening. All rotating components must be capable of safe operation, including under overspeed conditions. For specialized applications, such as high-voltage motors (1000V and above) and canned motors, the standard imposes additional structural and testing criteria. High-voltage motors require specific internal wiring arrangements and warning labels for high-voltage hazards. Canned motors must guarantee zero leakage of pumped fluids, requiring robust mechanical strength and sealing performance for circulation pipes and shielding sleeves. Even in the event of a stator shield failure, the terminal box must prevent fluid leakage.

Prüfverfahren

The standard mandates a series of rigorous testing procedures to verify compliance. Key tests include the Thermal Test to evaluate temperature rises under various duty cycles, and Insulation Resistance and Withstand Voltage Tests (both power-frequency and impulse) to ensure electrical safety. Environmental and mechanical durability are assessed through Damp Heat Tests, Impact Tests, and Static Pressure Tests on terminal boxes. Additionally, it specifies Insulation Structure Evaluation for thermal and electrical endurance, alongside Aging, Ball-Pressure, and Flammability tests for non-metallic materials.

Häufige Fragen

What products are regulated under GB 20237-2006?

The standard regulates crane and metallurgical motors (including eddy current brakes), elevator motors, tower crane motors, conical rotor motors, and canned motors used in industries like petroleum and chemical processing.

Is compliance with GB 20237-2006 mandatory for market access in China?

Yes, the standard explicitly states that all technical content is mandatory. Manufacturers must comply with these requirements to sell the specified motors in China.

How does GB 20237-2006 relate to international IEC standards?

The standard primarily references GB 755-2000 (IEC 60034-1) for general rotating machine requirements, but it also incorporates specific Chinese mechanical and structural safety criteria, along with references to IEC 60034-18-22 and IEC 60034-18-31 for insulation system evaluations.

The summary above provides a high-level overview of GB 20237-2006. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 20237-2006 today to access all detailed parameter tables, specific clearance dimensions, and comprehensive testing procedures.

Hinweise zur Anwendbarkeit

Normtyp: Sicherheit
CCS: K26
ICS: 29.160.30
Zuständige Behörde: Ministry of Industry and Information Technology
Technisches Komitee: Ministry of Industry and Information Technology

Normbeziehungen

Ersetzt durch:GB 47501-2026 (Kommend)