What is verification of the temperature measuring system of TheGlow-wire Tester？
Based on IEC 61643 clause 188.8.131.52, non-rewireable SPDs shall be so designed that the flexible cable or cord is protected against excessive bending where it enters the accessory.
Compliance is checked by inspection and by a flexing test made by means of a flexing test swivel machine as shown in figure 9.
The cable or cord is loaded with a mass such that the force applied is
-- 20 N for accessories with cables or cords having a nominal cross-sectional area exceeding 0.75 mm²
--10 N for other accessories
A current is passed through the conductors.
The oscillating machanism is moved through an angle of 90°(45°on either side of the vertical, the number of flexing being 10000 and the rate of flexing 60 per minute.
Zhilitong Electromechanical Co., Ltd manufacturers Flexing Test Swivel Machine ZLT-DW2 and Load Box ZLT-HZ1 which carry main voltage.