I have seen in the past where people apply separate bonding conductors across metal piping flange connections. I believe this to be a practice brought forth by the concerns of static discharge in hazardous areas.
Does anyone have experience with this (especially with application in the...
All -
There are many forum postings that discuss this topic. I would like to draw on everyone's practical experience as it applies to the NEC 2011 and referenced ISA standards on the subject.
Hypothetical Design:
- AB PLC 5/05 with Analog Input card rated for installation in Cl I Div 2 (no...
MikeH-
I will discuss the load considerations during startup with the vendor. The ramp from no load to 70% load (where the slide valve controller is set to automatic) is over a time period of a few minutes. I would be surprised if that short of time period would be the cause, but it's certainly...
This compressor is started via a soft starter. I don't particularly recall the settings for that installation, but I could find more detail.
The compressor is direct coupled to the motor and has an internal slide valve that is used for capacity control. We start the compressor fully unloaded...
I work for a company who packages a very specialized type of petrochemical/refining chemical process machinery. Occasionally, we will also package associated compressor packages as well if they add benefit to the proposal. An electrical engineer by school, and instrumentation and controls...
All-
I am currently specifying a electromechanical component for use in hazardous location (hydrogen) typically defined as Class 1 Div 2 Group B.
The device I want to use does not have the typical UL/FM approvals that I know of. It is approved per the ATEX directeive as Ex nA II T3 X for gas...
