Explosion proof inverter
Explosion proof inverter
(OP)
Currently I have DC Explosion proof motor 100 W for air fan . The problem is brush wearing that cause motor stuck every two months.
I plan to install the flame proof inverter to convert DC 24V to 220 AC 1 ph to drive new AC motor ( replace DC motor ).
Anyone can suggest the manufacturer for such explosion proof inverter ?
The inverter can not be installed in safe location as it will be located in hazardous due to no available space in safe area.
I plan to install the flame proof inverter to convert DC 24V to 220 AC 1 ph to drive new AC motor ( replace DC motor ).
Anyone can suggest the manufacturer for such explosion proof inverter ?
The inverter can not be installed in safe location as it will be located in hazardous due to no available space in safe area.





RE: Explosion proof inverter
http://www.gastmfg.com/airgearmotors.html
Might be a lot cheaper and easier then a 1/10 Hp EP motor.
Be interesting to read the response on a 100 W, DC to AC, EP converter.
Ed
RE: Explosion proof inverter
Did I say economically? In XP? Shucks, nothing is economical in XP? But, I meant, comparatively so!
RE: Explosion proof inverter
Ed
RE: Explosion proof inverter
----------------------------------
If we learn from our mistakes I'm getting a great education!
RE: Explosion proof inverter
RE: Explosion proof inverter
JJken
What about a mechanical variable speed device like the Kopp variator + suitable motor? They start at ratings 0.18kW and have a speed range 11:1 and depending on the motor, are suitable for explosion proof environments. The speed range is constant power so maybe a little overkill and 'old technology' but they work.
http://www.allspeeds.co.uk/kopp/index.htm
RE: Explosion proof inverter
----------------------------------
If we learn from our mistakes I'm getting a great education!
RE: Explosion proof inverter
This inverter will be located at off-shore wellhead platform. Only 24 Vdc is available. No shop air available
All area are classified.
That is why we need XP inverter which is rarely used.
The heat dissipation from XP enclosure is also one concern.
RE: Explosion proof inverter
Then this equipment shall be XP to start at any conditions.
RE: Explosion proof inverter
When the XP motor will be drived by inverter, it must be rated for that purposed due to harmonics and low cooling at lower speed.
Whether Inverter rating duty motor is still needed or not if motor driven by inverter run at constant rated speed and inverter is pure sine wave type. ??
Combined test to get ATEX certificate for both motor and inverter is neccessary or not ?
RE: Explosion proof inverter
RE: Explosion proof inverter
----------------------------------
If we learn from our mistakes I'm getting a great education!
RE: Explosion proof inverter
The inverter solution is proposed from main supplier who sell whole package of problem equipment.
Direct contact to motor manufacturer may be better solution as ScottyUK's comment.
RE: Explosion proof inverter