Current-Carrying Hoses Torsion Test Apparatus

1. Introduction

The current-carrying hoses torsion test apparatus is designed to meet the test requirements of IEC60335-2-2 clause 21.104, for verifying torsion Resistance of Current-Carrying hoses.

One end of the hose is held in a horizontal position with the remainder of the hose freely suspended. The free end is rotated in cycles, each cycle consisting of five turns in one direction and the five turns in the opposite direction, at a rate of 10 turns per minute. The test is carried out for 2000 cycles. After the test, the hose shall withstand the electric strength test.