This standard is for electrical equipment or equipment that operates on alternating current with a nominal voltage exceeding 1000 V and 33 kV or less and a frequency of 100 Hz or less in air at atmospheric pressure. Specifies indoor resin insulators (hereinafter referred to as insulators). Applies to the following insulators. a) Indoor resin post insulators that were previously specified by JIS and are specified in the main body of this standard. b) Indoor resin post insulators specified in IEC 60273:1990 for systems with a nominal voltage exceeding 1000 V specified in Annex 1 (normative) of this standard. The main body of this standard or the provisions in Annex 1 (norms) shall be applied consistently to a single product, and the corresponding provisions and contents of both may be selected or mixed as appropriate. cannot be applied.
JIS C 3851:1999 history
2012JIS C 3851:2012 Indoor post insulator of organic material
1999JIS C 3851:1999 Indoor post insulator of organic material
1994JIS C 3851:1994 3.3 kV - 33 kV epoxy-resin post insulators for indoor use