Fuselink,
A Kuhlman 37.5 KVA pole mount single phase transformer, 7620 x 120/240 has an impedance of 1.7%. This should be similar for other manufacturers of like transformers.
One note this is an oil filled transformer, not a dry type and the rating is taken at 85 deg C. Also this transformer...
I would assume you took your EIT exam and are now an "Engineer in Training". Just as the term implies you must be trained by a licensed engineer, probably your supervisor. He should take the time to train you on reading plans. Another source of information is to make friends with the job...
Luhrs, we use Trimble GPS equipment using TerraSync software on the field portable unit. Additionally, we have our own base station running Trimble "Pathfinder". Once you take the field GPS obersvation, you use the base station files to provide a differentially corrected x,y coordinate. The...
I work for an electric utility and we require all conduit under a roadway or any paved surface to be either concrete encased with 6" minimum surround or the installation of rigid metallic conduit. If it happens to be a major highway crossing with multiple circuits we will require a concrete duct...
dcp,
Thanks for the clarification. I am located in the US and I agree the NEC does require bonding to the metal water pipe. The point I was trying to make,and apparently failed at, utilities do not actually make the physical connection to the water pipe. As you pointed out, this is done by...
tmet, I would doubt if the electric utility is at fault. Utilities do not bond to water lines. Their grounding system originates at the substation for a 4-wire wye system and is carried on the overhead by pole grounds bonded to the neutral. At a riser pole (transistion from overhead to...
I am interested in obtaining a windows based roadway lighting software program. The software must be generic across manufacturers and use spatial data relationship (x,y,z). Do any of you utility types or consultants have a suggestion.
Thanks
There is an automation conference in Orlando in January '04 called Distributech. You can go to their web site at www.distributech.com for information. This is an excellent conference if you are getting into SCADA and/or Substation Automation.
Penwell, sponsor of distributech publishes a...
In the early 80's we began using polymer insulators on 69kv transmission due to breakage of porcelain post insulators occuring during seasonal temperature changes. Today we use polymer insulators for most applications relating to transmission and distribution lines. Additionaly we use polymer as...
69kv is the highest voltage I deal with, however, all substation transformers are ordered with station class MOV's mounted on both the high and low side of the transformer. In addition station class MOV's are mounted on the incoming 69kv structure and at the takeoff of the 13.8kv feeder...
