charz
Electrical
- Jan 11, 2011
- 96
How common (as a standard product) is the availability of gas group Ex de IIA, Ex ec IIA motors?
As I could see from our past projects, most LV motors are with gas group IIB, so IIB looks more common.
The concern here is that vendor is offering gas group IIC for some motors; if I accept the IIC motors now, future replacements would also need to be IIC-certified or just replace it with IIA. Which would be IIA or IIC advisable now considering the immediate availability and cost for future replacements.
As I could see from our past projects, most LV motors are with gas group IIB, so IIB looks more common.
The concern here is that vendor is offering gas group IIC for some motors; if I accept the IIC motors now, future replacements would also need to be IIC-certified or just replace it with IIA. Which would be IIA or IIC advisable now considering the immediate availability and cost for future replacements.