TORQUE TEST

ACTIVITY ON 7/4/10

before i explain more, below was a short conversation with Mr. SZASKB

Mr. SZASKB : what is torque??

FN : torque is a force

Mr. SZASKB : what force??

FN : a force laa

Mr. SZASKB : yeah true..but what kind of force??

FN : ermm..don't know

Mr. SZASKB : torque is a twisting force (he explained with the demo as well)


by the way torque test is actually another test for IPC inspection...this process is the earliest procedure in the test....this test is a simple test...joint two cable and connect them with IPC in the middle. the IPC will lock with a pair of bolt and nut on top of it..special device used to apply the twisting force..


what the foreman in the picture below did is he plug in the device to the nut and turn it clockwise until the head broken from it socket..then, by looking at the meter we can know how much force has been applied...

En. Saeidin (TNBR Foreman) doing the torque test

picture above is what have been done in the lab...below is the implemented procedure at the top of electrical pole

*ehsan by mohd hafizul hamzah

how to now how much torque should be applied??

- every IPC has it's own torque specification, if the head break before the specification torque, means the IPC not suitable to the cable.

CR Measurement

- the procedure is just the same like heat cycle test. two cables are connected at both end.
- switch ON the device, the reading will display in analog...the low the resistance..the better the CR... the range of resistance usually between mili ohm - micro ohm

CR wires connection completed

CR Measurement Device