This standard specifies the quality grading principles, testing items, sampling methods and assessment principles for AC high-voltage circuit breakers with rated voltages of 3.6 kV and above. This standard is applicable to quality supervision, grade product evaluation and internal enterprise assessment of AC high-voltage circuit breakers that have been mass-produced and sold into the field.
JB/T 56235-1999 history
1999JB/T 56235-1999 Guidelines for Quality Classification Inspection of AC High Voltage Circuit Breakers