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#20696 - 01/19/03 08:05 AM Schedule for on load trial  
amandaamisha  Offline
Member
Joined: Dec 2002
Posts: 16
safat,kuwait,kuwait
Dear Friends,
Can somebody throw light on the following.

For Standby (Emergency) Diesel engine set and ATS , is their any compulsory time schedule like weekly , monthly etc for load test to keep it 'work" worthy or is it just a matter of one's convenience ??
We have at our site CATERPILLAR make genset of capacities ranging between 250 to 2000 KVA.,for which normally we do a weekly trial run without load for about 5 to 10 minutes( not thro ATS).


Work Gear for Electricians and the Trades

#20697 - 01/19/03 09:32 AM Re: Schedule for on load trial  
maintenanceguy  Offline
Member
Joined: Dec 2001
Posts: 300
Southern NJ, USA
For helthcare facilities in most states, running tests are required weekly and load tests are required monthly.

I believe this is from one title of the NFPA but I don't know where. Monday, I'll try to find the reference.

I don't know about any other industry.


#20698 - 01/19/03 11:25 AM Re: Schedule for on load trial  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
As maintenanceguy said you may have specific requirments.

Other then that I would suggest you talk to a Cat service guy.

IMHO 5 to 10 minutes is not enough to even reach running temp.

I would be thinking weekly 10 to 15 minutes after hitting the normal operating temp. this forces any water condinsation out of the oil.

Do you have a service contract on these units?

We install many gen sets and when the tech comes out to do the start up they always set the exersise clock for weekly but I do not remember the lenth of run time.

Bob

[This message has been edited by iwire (edited 01-19-2003).]


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#20699 - 01/19/03 12:23 PM Re: Schedule for on load trial  
ThinkGood  Offline
Member
Joined: Aug 2002
Posts: 1,081
Milwaukee, WI
Maybe http://www.cat.com/ can give you the closest contact person?


#20700 - 01/19/03 03:32 PM Re: Schedule for on load trial  
Ron  Offline
Member
Joined: Mar 2002
Posts: 582
White Plains, NY
Is the gen arranged for compliance with Article 700, 701 or 702? The requirmeents will be different.


Ron

#20701 - 01/19/03 04:13 PM Re: Schedule for on load trial  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Ron,
All I find is 700.4 (B) and 701.5 (B)
tested in a manner acceptable to the AHJ, nothing in 702

I would think following the makers recommendations would be in a manner acceptable to the AHJ.

Is there something I am missing?
Bob


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#20702 - 01/19/03 04:25 PM Re: Schedule for on load trial  
Ron  Offline
Member
Joined: Mar 2002
Posts: 582
White Plains, NY
Most AHJ's enforce NFPA 110. Article 700 and 701 are considered Level 1, and 702 is Level 2. Hospitals are also special.
NFPA 110, Chapter 8 goes through the routine maintenance for the two levels.


Ron

#20703 - 01/19/03 04:27 PM Re: Schedule for on load trial  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Ok,
I missed a FPN to go NFPA 110-1999
Standards for Emergency and Standby Power Systems.

I should look harder before I post.


Bob

[This message has been edited by iwire (edited 01-19-2003).]


Bob Badger
Construction & Maintenance Electrician
Massachusetts


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