Recent content by safy2004

Thanks catserving, please see attached the total load and the continuous load details, the fuel is diesel.

Thanks ScottyUK, The company’s condition is to have minimum N+2 generators. But what about the capacity of the generators, what is the best design: ONE 4 MVA TWO 2 MVA FOUR 1 MVA Or there is another option?

It is required is to install generators to feed loads of 2807 kW + j 1621 kVAR = 3241 kVA on 6.6kV, we propose to use 0.4 kV generators and use step-up transformers to feed the loads with 6.6 kV, my question is what is the best combination of generators for this load, is it better to use: 1- One...

Commissioning activities recommended by the factory of the transformer (Prior to HV power energization) a- Measurements • Electric strength of the oil (IEC test): minimum value 60kV, • Winding insulation resistance to ground: at 20°C, The insulation resistance should reach a value of some...

We have commissioned and tested a power transformer 63MVA, 132/33kV, but because of the delay of executing the 132kV source cable we didn't energize the transformer, it's now about one year since our testing, what tests can be done before energize the transformer? Keeping in mind we have done...

Hello, I have a question if there is IEC standard that is equivalent to (or similar to) the IEEE std 1366. This standard concern the power distribution reliability indices. Thanks in advanced for any help. Regards, Safy

Regarding the parallel and series connection of CT's: Secondary of the CT can be considered as CURRENT SOURCE! Connecting two CT'S in parallel means two current sources outputs connected to the load, which means the result is the algebraic summation of the two secondaries of the CT's i.e: If...

Hello, I have a question if there is IEC standard that is equivalent to (or similar to) the IEEE std 1366. This standard concern the power distribution reliability indices. Thanks in advanced for any help. Regards, Safy

Hello, A poor power factor can be improved by adding power factor correction capacitors to the plant’s distribution system. Correction capacitors provide needed reactive power (kVAr) to the load. If some thing happened by an Inadvertent mistake, and the compensated reactive (capacitive) power is...

Thanks 7anoter4 But from commercial point of view EPR filler is more expensive.

Hello Thanks in advanced for any feedback. We are planning to use new 3x150mm2, 33kV cable, and we are trying to identify which cable is better than the other? Regarding the filler of the cable, I have noticed that there are two different types of those fillers,one is compact paste(dough), and...

According to IEC, what is the minimum clearance between the top of the MV switchgears and the roof of the building.

We intend to buy new testing equipments to our laboratory for electricity distribution network. Can anybody help me to select what suitable testing equipments to identify the accepted technical specifications for: 1- Porcelain insulators. 2- M.V XLPE cables. 3- L.V P.V.C cables. 4- Aluminum...

Hi! every body We intend to establish workshop, for repairing and maintenance of distribution transformers, and regarding the drying equipment we got different offers from the suppliers including different kinds of drying equipment: 1- Pressure-changed Vacuum Drying Equipment. 2- Hot Air...

Thanks Bilegan But you have mentioned this phrase: "All armoured cables are suitable for direct buried installations" Is it mentioned in the standards, or it's just a conclusion? Regards Safy