GB5959.5-2014
Safety in electroheat installations―Part 5: Particular requirements for plasma installations
电热装置的安全 第5部分：对等离子体装置的特殊要求
GB 5959.5-2014 is a current mandatory Chinese national standard for Safety in electroheat installations―Part 5: Particular requirements for plasma installations. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Nov 5, 2015.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the safety requirements for thermal plasma torch systems, specifically arc plasma systems and induction plasma systems. It also covers devices utilizing these torch systems, including thermal spraying equipment and heating or chemical heat treatment equipment for solid, liquid, and gaseous charges. This standard explicitly excludes plasma torches designed for welding, cutting, and related processes, which are covered by GB/T 15579.7-2005.
Technical requirements
The standard mandates comprehensive safety protocols for the design and construction of plasma installations. For arc plasma systems, it specifies critical requirements for DC power supply grounding, where one pole must be grounded independently to prevent stray leakage currents. High-voltage torches must automatically shut down if leakage current exceeds 10 mA. The standard also details strict mechanical and electrical criteria for cooling and gas circuits, emphasizing the use of non-conductive, non-ferromagnetic materials and automatic power cutoffs upon flow loss. For induction plasma systems, the standard focuses heavily on electromagnetic containment. The torch must be enclosed within a Faraday cage to minimize electromagnetic radiation and protect operators from high-voltage terminals. It mandates that high-voltage terminals be grounded to discharge residual energy stored in capacitors when enclosures are opened. Furthermore, ferromagnetic metals are strictly prohibited within the torch structure or Faraday cage to prevent hazardous electromagnetic coupling. Operational safety requirements are extensive, covering the proper sequential startup and shutdown of systems to ensure cooling and gas flows are established prior to ignition. The standard mandates rigorous protective measures against various operational hazards, including toxic substance extraction, noise mitigation, and shielding from ultraviolet and electromagnetic radiation. Operators must be equipped with specialized personal protective equipment (PPE), including insulated face shields and ear protection, and work areas must be effectively shielded to protect nearby personnel.
Testing methods
The standard references GB/T 10066.5-2014 for the specific test methods applicable to plasma equipment. It outlines evaluation procedures for verifying electrical insulation integrity, cooling system leak tightness under pressure, and the functionality of safety interlocks. Compliance verification also includes assessing the effectiveness of electromagnetic radiation shielding and emergency shutdown mechanisms. Additionally, it provides an informative appendix detailing the electromagnetic radiation thresholds based on frequency ranges to ensure operator safety.
FAQs
What products and equipment are regulated under GB 5959.5-2014?
This standard applies to thermal plasma torch systems (arc and induction) and devices using them, such as thermal spraying equipment and heating or chemical heat treatment furnaces. It explicitly excludes equipment used for welding, cutting, and cladding, which are covered by GB/T 15579.7-2005.
Are there any significant updates from the previous GB 5959.5-1991 version?
The 2014 version restructures the classification of plasma torch systems, adds specific safety requirements for circuits, power supplies, ignition devices, and system controls. It also introduces new operational protection requirements against noise, electromagnetic radiation, particles, UV radiation, and fire, while removing the previous appendix on insulation resistance measurement.
How does GB 5959.5-2014 relate to international IEC standards?
The standard aligns with international concepts by referencing IEC standards, such as IEC 60519-1 for general electroheat safety and IEC/TS 60680 for testing methods. However, it also incorporates specific Chinese national regulations and references the European Directive 2004/40/EC for electromagnetic field exposure thresholds.
The summary above provides a high-level overview of GB 5959.5-2014. 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 5959.5-2014 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- K61
- ICS
- 25.180.10
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- Ministry of Industry and Information Technology
Relationships
Replaces:GB 5959.5-1991