ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
dsk 13
Admin 8
Recent Posts
OD of Alum and Copper
by HotLine1. 08/23/17 07:30 PM
Grid problem??
by annemarie1. 08/21/17 01:10 PM
Bathroom electrical
by doc. 08/19/17 06:53 AM
electircal ageing test on IPC
by SIAME. 08/15/17 02:43 AM
electrical aging test on IPC
by gfretwell. 08/15/17 12:27 AM
New in the Gallery:
Gallery Test
Popular Topics(Views)
240,156 Are you busy
175,803 Re: Forum
167,965 Need opinion
Who's Online Now
0 registered members (), 62 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#181554 - 10/15/08 10:54 PM Collector Bus sizing Problem  
theseus  Offline
Member
Joined: Feb 2008
Posts: 12
china
How to size the Collector Bus?
I have 3 1600kw/400V gengerators Synchronized and connected to the Collector Bus.


Tools for Electricians:

#181567 - 10/16/08 11:52 AM Re: Collector Bus sizing Problem [Re: theseus]  
mikesh  Offline
Member
Joined: Jun 2006
Posts: 613
Victoria, BC, Canada
Ok I'll bite, (1600 X 125%) + 1600 + 1600 = 5200 amps.
28-108 of the Canadian Electrical code for conductor sizing for Motors.

Method 2 take the connected load at 125% and size the bus for that.

I don't know what a collector bus is but i guessed it is the bus after the transfer switches where each generator parallels.


#181585 - 10/17/08 12:50 AM Re: Collector Bus sizing Problem [Re: mikesh]  
theseus  Offline
Member
Joined: Feb 2008
Posts: 12
china
Yes,Collector bus = paralleling bus.

But,generator is different from motor.


#181620 - 10/20/08 12:46 PM Re: Collector Bus sizing Problem [Re: theseus]  
mikesh  Offline
Member
Joined: Jun 2006
Posts: 613
Victoria, BC, Canada
Yes a generator and a motor are not the same but the wires are sized the same. At least that is what i derive from section 28 of the CEC %125 of the first (largest) generator and 100% of the next 2. Generators and motors are very similar in terms of what happens inside them whether making or using electricity. Cooling, winding and loading all apply the same. A stator for a motor and a generator look the same from a winders perspective at least from 28 year old memories they do. I have rewound stators for both. The armatures are different as there is excitation and magnetic fields to build.



Member Spotlight
electure
electure
Fullerton, CA USA
Posts: 4,260
Joined: December 2000
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.011s Queries: 15 (0.002s) Memory: 0.7598 MB (Peak: 0.8927 MB) Zlib enabled. Server Time: 2017-08-24 03:06:58 UTC