Izeb4040's Posts
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richard334:Nice one! Congrats... |
hannamia007:For those who evaluated only the highest certificates. Will there be any problem If they apply for jobs that require lower certificates that they didn't evaluate? |
Mariesio:Alright... |
Mariesio:The day you paid for it or the day all your docs reached WES? |
saintneo:Nice one... Also, length of span (distance from one pole to the next), the number of poles before an "H" pole and size of conductor. Another easy way is: 11kv line has 1 disc insulator on each of the 3 phases, 33kv line has 3 disc insulators on each of the 3 phases, 132kv line has 12 disc insulators on each of the 3 phases, etc... *The disc insulators are either dark brown or light green or white. They are always at the point where the lines are stringed to the poles.
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YoungFr:Sorry about your situation. Just be strong. Everything is going to be fine... |
asuustrike1:It depends on the substation you're referring to: There are generating substations (voltage as 16/330kv); There are transmission substations (voltages as 330/132kv, 132/33kv); There are also distribution substations (voltage as 33/11kv-injection substation, 33/0.415kv & 11/0.415kv - regular substations where your street transformers are). X/Ykv: X - substation incoming voltage. Y - substation outgoing voltage. What generator house are you referring to? In most places in Nigeria, weather conditions affect power lines. While in few places, the networks are stable because of high standard of installations and maintenance The nature of fault conditions (Eg. Shattered lightning arrestor, J&P fuse drop, Shattered disc & port insulators, broken cross arm, fallen poles, conductor snap, failed conductor termination & insulation, trees falling on lines, conductors of different phases making contacts with themselves etc.) on the line after lightning and thunderstorm determine how long it will take for power to be restored. These lines are also called feeders. When there's any fault condition on the line, the feeder trips in the "substation" on different indications (eg. Over-current fault, Earth fault etc). The restoration of the feeder is tried to see if it will stay after the bad weather condition. If it doesn't, faultmen are sent on the line. If it stays, it means the fault was just transient/temporary and power is restored immediately. With most DISCOs and Transmission Company in Nigeria, faulty feeders are not tried in bad weather conditions. Some administrative reasons could also cause the delay of power restoration. Places that are of high priority (where high revenue is gotten from easily-where people easily/always pay their bills and places of high political dwellers) could be always taken seriously when their power lines have faults Other factors that could cause delayed power restoration are; The impact of the bad weather condition in the area, Poor accessibility to the location of the faulty portion of the line, Availability of faultmen to clear the fault, Availability of materials to be used by the faultmen, Etc... |
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