Thank you. A follow-up question about grounding:
I'm told my client will accept wye wound motors where the motor winding is not grounded. Isn't this inherent to wye wound motors? Are there problems using a wye wound motor with grounded winding in a delta power system?
I've supplied several motors on a project (in USA) that utilizes a delta power system. Most/all of my low hp motors appear to be wye wound. The client believes all motors must be delta wound for use in a delta power system.
Their reasoning is that when a wye only wound motor is connected to a...
I found this to be an interesting problem. I have minimal experience with aqueous ammonia but everything I could find on design of aqua ammonia storage required the storage tank to be closed from atmosphere, have a pressure set point around 30 Psig, and provide some sort of vacuum relief.
There...
Does anyone have experience using check valves as vacuum breakers?
I need to provide a vacuum relief valve for an ASME Sec VIII pressure vessel (MAWP 30 psig) storing aqueous ammonia. I’m familiar with the API 2000 conservation vents from Groth, Protect-o-seal, Tyco, etc. but cannot use them...
I am working on a project requiring instruments to be provided with IECex certificates, and comply at least with IEC 60079 group Ex II2G EExd II CT6.
Is it correct that an ATEX (or CSA, FM, etc.) agency approval would not provide an IECex certificate, and is therefore unacceptable...
