What’re the technical demands of overhead crane?
1.measure insulation resistance of overhead crane power line and control circuit to the ground
and phases shall not be < 0.5 MΩ, the value can decrease 50% in the humid area, after it connects with all electrical equipment lines.
2. outer shell of crane electrical equipment and crane rails shall be contacted with ground reliably.
3. ambient temperature for crane shall be not > 40%dC and <-20%dC
4. position of crane safe ruler shall be decided by position of limit switch of adjacent crane with same span, users can install it by themselves
5. other technical demands
