The primary ASTM standard for electrical insulating gloves is:
ASTM D120 - Standard Specification for Rubber Insulating Gloves
Key points about ASTM D120:
Covers six voltage classes (00 to 4) based on maximum use voltage:
Class 00: 500V AC / 750V DC
Class 0: 1,000V AC / 1,500V DC
Class 1: 7,500V AC / 11,250V DC
Class 2: 17,000V AC / 25,500V DC
Class 3: 26,500V AC / 39,750V DC
Class 4: 36,000V AC / 54,000V DC
Requires ozone resistance testing (per ASTM D1171).
Specifies physical tests (tensile strength, elongation, tear resistance).
Mandates dielectric testing at high voltage before sale and during service.
Defines glove types:
Type I: Non-ozone-resistant (typically natural rubber).
Type II: Ozone-resistant (synthetic rubber like EPDM or neoprene).
Requires color-coded markings for easy class identification (e.g., Class 00: beige).
Critical Safety Notes:
Always pair with leather protector gloves over insulating gloves (per ASTM F696) to prevent mechanical damage.
Pre-use inspection & regular retesting (every 6 months) is mandatory (per OSHA 1910.137 & ASTM F1236).
Never use beyond voltage class or after expiration date.
Related Standards:
ASTM F496: In-service care requirements.
ASTM F1236: Test methods for glove verification.
IEC 60903: International equivalent standard.
For compliance, ensure gloves meet ASTM D120 and are certified by a Nationally Recognized Testing Laboratory (NRTL) like UL or CSA. Always follow OSHA 1910.137 and NFPA 70E for workplace safety.