Does anyone know what temp is related to class H i have vendor literature that refers to 220 degrees C but when i look up insulation classes at other sites it refer to class H as 180 degree C
thanx
GDL
All,
A few weeks ago I posted a question about this subject which seemed to cause confusion over the SI units being utilised. Since my question I have clarified it and am posting for all's info.
Inertia Constant 'H' can be defined as the ratio of stored energy at a rated speed to the rated...
All,
A relatively new CSA standard (1999) has been developed from the IEC standards for LV switchgear and control gear - part 1 general rules! before i purchase the standard i would like to know how this interacts with CSA 22.2 No. 31 for switchgear assemblies? and what changes have been made...
All,
I am after a bit of advice utlising 'intelligent' MMC's - basically does anyone have any experience of such devices and what the manufacturers mean by 'intelligent'?
am i correct in thinking that these devices can be bought as an integral part of the MCC enclosure and they have various...
Gordon,
The 3/2 start requirements comes from the API standards specific for the oil and gas industry. If you are interested i will find out the actual references. these standards outline the requirement for the compressors and and pumps being driven - and probably based on the old saying...
People,
We am currently looking at purchasing some large induction motors for a client to drive compressor and pump units (3MW - 10.5MW on offshore application). The original spec is outlining that the motors should be able to start @ 80% terminal voltage @ 3.2 LRC as a worse case scenario...
