- #1
Windadct
- 1,452
- 411
Hello MEs -
I am an EE and have customer that insists in not following our qualified mounting instructions for a power module:
Our instructions M6 8.8 screw torqued to 2.5 min to 5.0 Nm Max.
Customer is using NAS 1802 torqued to 25 in lbs -->> Is this a suitable conversion?
Of course they are breaking the modules - they have 10 installed, 8 with mounting hole cracks, and we make about 100,000 of these a year. I have customers in my territory using 2-5K per year - and never a problem of this type. We are a high end German co, that does not mess around - the modules are rigorously qualified.
And of course - the customer is sure the modules are defective. They swear that the torque they are applying is correct - but they really have to be doing something to break the modules.
Also - they are using a manual torque driver - the type that clicks when the torque is reached, our spec is for electronic driver with break away clutch - much more consistent
I am an EE and have customer that insists in not following our qualified mounting instructions for a power module:
Our instructions M6 8.8 screw torqued to 2.5 min to 5.0 Nm Max.
Customer is using NAS 1802 torqued to 25 in lbs -->> Is this a suitable conversion?
Of course they are breaking the modules - they have 10 installed, 8 with mounting hole cracks, and we make about 100,000 of these a year. I have customers in my territory using 2-5K per year - and never a problem of this type. We are a high end German co, that does not mess around - the modules are rigorously qualified.
And of course - the customer is sure the modules are defective. They swear that the torque they are applying is correct - but they really have to be doing something to break the modules.
Also - they are using a manual torque driver - the type that clicks when the torque is reached, our spec is for electronic driver with break away clutch - much more consistent