Electricians and other professionals working with live electrical systems are constantly exposed to potential hazards. NBR IEC 60903:2024 outlines comprehensive guidelines for electrical insulating gloves designed to protect workers from electric shock.
Key Features of Electrical Insulating Gloves
NBR IEC 60903:2024 standard applies to both five-finger gloves and single-fork gloves, providing necessary protection against electrical shock. It also includes gloves with additional mechanical protection, referred to as composite gloves. The standard emphasizes that these gloves must be used by trained personnel following safety procedures and usage instructions.
Types of Gloves:
- Standard Insulating Gloves: Typically used under protective leather gloves.
- Composite Gloves: Provide combined electrical and mechanical protection, usually without an over-glove.
Classification:
Gloves are categorized into classes (00 to 4) based on their voltage protection capabilities. Special properties are indicated by suffixes added to the class designation.
Design and Material Specifications
The gloves are made from elastomer and can feature or lack a textile support. They might include an external coating to mitigate chemical contamination. For ease of inspection, gloves with external coatings should have a contrasting color.
Size and Fit:
- Gloves are available in various sizes, with palm circumferences ranging from 178 mm (size 7) to 305 mm (size 12).
- The length and thickness of the gloves must comply with specific requirements to pass dielectric tests.
Performance and Durability
The gloves must be free from harmful physical irregularities detectable through testing or detailed inspection. Irregularities that are non-detrimental and do not impact the glove’s function are acceptable. Performance standards cover mechanical, climatic, and environmental resistance, ensuring gloves can withstand specific stresses associated with their class.
Environmental Considerations
While the standard does not establish comprehensive environmental requirements, it does encourage stakeholders to consider the environmental impact throughout the gloves’ lifecycle—from production to disposal. This approach aligns with global sustainability practices, although explicit disposal guidelines are included in the usage instructions.
Labeling and Packaging
Each glove must display specific information, including:
- The IEC 60417-5216:2002-10 symbol for live work suitability.
- The NBR IEC 60903 standard number.
- Manufacturer details.
- Size, class, and category.
- Manufacturing date.
Composite gloves must also feature a mechanical symbol (hammer). Packaging should protect the gloves from damage during transport, handling, and storage, and should include detailed usage instructions.
Conclusion
Adhering to the NBR IEC 60903:2024 standard is crucial for the safety of electrical workers. Properly designed and manufactured insulating gloves protect against electric shock and mechanical hazards, ensuring safer work environments. Regular inspection, maintenance, and adherence to usage instructions are key to maximizing the efficacy and longevity of these protective gloves.