We are having several different opinions regarding Bolts used for Busbar connections of MV Cables as well as motor terminations in drawer compartments. Since we are working in Europe. Client maintains we should use 8.8 which is a metric medium carbon steel type bolts 120000psi along with recommended torque values. My company has purchased A2 & A4 gr 70 stainlees Steel bolts and we have used them extensively throughout our project. There is now a discussion as to replacing these bolts. I have stated that there is nothing wrong with the Stainless Steel bolts being used as long as the correct torque value is used, and that the Short Circuit Withstand values will not be compromised by these bolts. I have quote the fact that ABB Siemens and other Engineering companies use these satainless steel bolts for terminations on Generators and switchgear. However we are working under some Russian PUE, Gost & SNIP codes Can anyone substantiate my conconclusions
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