eeinpa
How did your project turn out?
CMAA standards would be helpful . . . http://www.mhia.org/
This is a challenging issue. Crane engineering companies could be helpful too.
Consult NEC Section 610.31 thru 610.33: It's very clear there and is recognized by OSHA.
The runway disconnect must be readily accessible from the floor, capable of being locked open (all ungrounded conductors) and placed within the view of the runway conductors (AND LABELED PROPERLY)...
If you have a variety of brands, it can be challenging. Otherwise check into an OEM's training assuming you have in-house maintenance. If you do not have manuals, you can get them on line from a variety of sources, get them and follow the OEMs recommendations.
Keep in mind that reputable...
If it is an AC crane, there is a drive manufacturer that has had this technology for many years and is very reliable.
Steel mill cranes are often DC, if so, I know of no anti-sway technology electrically.
Mechanical means by reeving is also an option, but normally only when starting from...
Desirable motor rewind shops have a specification for VFD rewinds. We have used this spec successfully, but I would suggest that you have the motor rewind shop tell you what they stand behind (warranty).
MOTORS
Existing Motors will be rebuilt as follows (assumes windings are adequate - advise...
I'm new to this forum but in case you still are in need . . . .
1. I would talk to the OEM. Normally it is a plant by plant issue and your insurance company may have an opinion too.
2. Normally this is addressed when the initial purchase was made, but I hate to assume. Div 2 locations ...
Texas crane builders would not have a problem helping you.
Gaffey, Proserv would be a great start. Sometimes air, in lieu of electric, is the answer in hazardous areas.
