CABLE STACKING
CABLE STACKING
(OP)
Hello,
I read a recent post that included a problem with excessive heating do to the way the cables were stacked. I can not find it, but there seemed to ba some knowledgable people in this area....
I am going to be feeding 3 MV toshiba JK power cells with 2 runs of 3/0 per phase (400amps each - 1000V system). Only two will run at the full 400A's the third will run at about 1/4 of that.
Are there any issues if I run the cables in the following fashion?
A A A A A A
B B B B B B
C C C C C C
The cables would be evenly spaced using a product called koz blocks (http://www.jms-supply.com/koz.html)
Any help appreciated.
Regards,
TULUM
I read a recent post that included a problem with excessive heating do to the way the cables were stacked. I can not find it, but there seemed to ba some knowledgable people in this area....
I am going to be feeding 3 MV toshiba JK power cells with 2 runs of 3/0 per phase (400amps each - 1000V system). Only two will run at the full 400A's the third will run at about 1/4 of that.
Are there any issues if I run the cables in the following fashion?
A A A A A A
B B B B B B
C C C C C C
The cables would be evenly spaced using a product called koz blocks (http://www.jms-supply.com/koz.html)
Any help appreciated.
Regards,
TULUM






RE: CABLE STACKING
I am only going about 15 feet from the secondary of a transformer to the cells......
RE: CABLE STACKING
How about
A1 B1 C2 A2 B3 C3
B1 C1 A2 B2 C3 A3
C1 A1 B2 C2 A3 B3
Do I remember that your in Canada? Check the Canadian Electrical Code. There are some suggestions in the notes to the rules (Appendix B).
respectfully.
RE: CABLE STACKING
The proposed arrangement will result in unbalanced impedances, which will result in a slight voltage unbalance (probably not noticable for 15ft). Waross's idea may help with that.
It sounds like you are building cablebus.
http://www.cablebus.com/
RE: CABLE STACKING
Waross,
Thanks for the reference...I will check the code. We could try the configuration you referenced...
Alehman,
Sorry... There are 3 feeder circuits each at 400A... i.e. (2) 1c per phase per feeder...
The electricians have come up with a couple other ways to run the cable.... I will keep you posted...