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#20696 - 01/19/03 04:05 AM Schedule for on load trial
amandaamisha Offline
Member
Registered: 12/09/02
Posts: 16
Loc: 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).
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#20697 - 01/19/03 05:32 AM Re: Schedule for on load trial
maintenanceguy Offline
Member
Registered: 12/02/01
Posts: 303
Loc: 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.
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#20698 - 01/19/03 07:25 AM Re: Schedule for on load trial
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4343
Loc: 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
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#20699 - 01/19/03 08:23 AM Re: Schedule for on load trial
ThinkGood Offline
Member
Registered: 08/07/02
Posts: 1084
Loc: Milwaukee, WI
Maybe http://www.cat.com/ can give you the closest contact person?
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#20700 - 01/19/03 11:32 AM Re: Schedule for on load trial
Ron Offline
Member
Registered: 03/13/02
Posts: 577
Loc: White Plains, NY
Is the gen arranged for compliance with Article 700, 701 or 702? The requirmeents will be different.
_________________________
Ron
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#20701 - 01/19/03 12:13 PM Re: Schedule for on load trial
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4343
Loc: 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
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#20702 - 01/19/03 12:25 PM Re: Schedule for on load trial
Ron Offline
Member
Registered: 03/13/02
Posts: 577
Loc: 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
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#20703 - 01/19/03 12:27 PM Re: Schedule for on load trial
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4343
Loc: 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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