We have 2 grounding pad at the basement of a new high rise building. The first is intended for indoor substation grounding while the second is intended for the lightning arrester grounding thru downconductor or downwire. The two pads are not connected to each other. This is the electrical...
Can somebody enlighten me on Polarization Index and Insulation Power Factor Test. Which of the two has more significance in terms of determining the integrity of insulation of a brand new 3 phase oil-filled transformer rated at 23KV/460V. Would appreciate your response.
encon5
Thanks alehman for your reply. Further info follows.
Two floors of the building are being used as school for computer sciences courses and installed in those floors called computer labs are 300 units of PCs with servers and routers. Thunderstorm is prevalent in the area hence we want to protect...
We will be installing a 2 MVA 23KV/480V delta-wye 3 phase oil-filled indoor substation transformer. The catalog shows the six terminals on the HV side. They call it loop fed. Can somebody elaborate on this.
Thanks.
encon5
