New landfill gas generating site with a unit substation (15kV-480V) installed on a containment pad. There is grating from the top inside of dike wall to equipment pad. Edge of pad extends 1'-6" from front and rear doors of 15kv gear. So as you approch the front and rear of the gear you are met...
Jraef is on to something.
A collegue sent me this link:
http://www.nfpa.org/assets/files/pdf/codesstandards/glossary_a09.pdf
From the NFPA's definition of automatic it would appear that an occupancy sensor requires human intervention and would not be considered automatic.
Burt2x you are correct it is section D. The sensors are dual technology with the off time delay set at 20 minutes. I have walked the plant during first shift and have rarely seen any of them off. Their safety procedures do not allow maintenance on energized equipment so the only task they...
Recently upgraded a large manufacturing facilities lighting from 400W HID to high bay flourescents with integral occupancy sensors. Everything went well and the areas looked great upon completion. Project will pay for itself in 2 years with energy savings since old lights burned 24/7/365...
Thanks for the input guys. Vter you are correct the capacitor is in the center and the(3)arrestors are in front. There are bus bars in the other side of the box that the incoming 2-500MCM cables terminate to. The 2/0 that feeds the surge equipment is tapped of the bus bars and enters through...
Replacing some PCB containing surge capacitors in a 4160V compressor motor termination box. Contractor reccomends replacing the short length of cable also. Here's our dilema the existing cables are non sheilded. If we replace this short length with sheilded cable as required by the current...
Designing some motor feeders that are routed in rigid steel conduit on an outdoor piperack. I am confused as what to use for the ambient temperature to determine if ampacity adjustment is required. Should I use the warmest average summer monthly high temperature, the areas record high...
Thanks to all for posting and sharing your knowledge on the subject.
I am in the process of getting competetive quotes for a custom pad mounted unit. In addition to the quote from Elliot Industries, Maysteel and Power Design Inc. have previously built similar units and are quoting their...
One Last time,
The generators are located at a muncipal landfil. The utility company is providing a 1500KVA, 12Kv to 480V transformer delta primary (12Kv) wye secondary (480V) There is no negotiation this is what they are providing. Utility will be buying the power from the company that is...
Gentlemen,
The utility is providing a 1500KVA 12KV delta to 480V Y pad mounted transformer. They are not interested in supplying a different type. There are 3 generators each rated at 480V 300KW. Attached is a cut sheet of what we found for the potential ground fault sensing equipment. They...
The grounding bank is for the 12Kv delta side of the transformer. The intent is to keep the generators from contributing to a fault on the utility side of the transformer. Can anyone reccomend a vendor for this type of equipment?
Working on a project were the utility company has requested a grounding bank be connected to the primary of their 12KV delta-wye transformer used as a generator step up for (3) 480V landfill gas generators. It will be located outdoors on a pad with the utility transformer and wired to the...
