Technical standard:
GB/T 1001.1-2003 "nominal voltage above 1000V part first overhead line insulators AC system with ceramic or glass insulator components - Test methods and definitions, criteria"
GB/T 21206-2007 "line post insulator characteristics"
JB/T 9676-1999 "high voltage line porcelain insulator crossarm technical conditions"
JB/T 8179-1999 "high voltage line porcelain insulator crossarm dimensions and characteristics"
Model description:
JB/T 8179-1999 standard (old model):
S: porcelain insulator crossarm;
S after the number 1, 2, 3... For the design of sequence number;
"-" digital rated voltage value, kV;
"Digital rated bending load value, kN.
GB/T 21206-2007 standard (new type):
RA - as crossarm line post insulators used;
RA after the digital representation of the bending load value, kN;
Then the letter E or J metal binding attachment or in plastic containers;
Then the letters T, C, H respectively, top of the line type or horizontal installation at the top of the line at the top of the binding type, upright mounting clip type;
The suffix of the digital representation of the lightning impulse withstand voltage specified value, peak value of kV;
Suffix letter N or L creepage distance standard and longer respectively.
