This part of JB/T 4279 specifies the calibration items and technical requirements of the enameled round wire rebound angle tester, calibration instruments, calibration methods and the processing of calibration results. This section is applicable to the calibration of rebound angle testers for measuring enameled round wires with a nominal conductor diameter of 0.08 mm to 1.60 mm.
JB/T 4279.4-2008 Referenced Document
JB/T 4279.1-2008 Verification procedure for test equipment of enamelled winding wire.Part 1:General
JB/T 4279.4-2008 history
2008JB/T 4279.4-2008 Verification procedure for test equipment of enamelled winding wire.Part 4:Springness tester
1994JB/T 4279.4-1994 Enamelled winding wire test equipment and equipment verification method springback angle tester