flurescent bulb rating is to 230v,50HZ.now flurescent connected 230v,25HZ.whether nreduced frequency will affect the glowing properties of flurescent.

6 Answers  

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what is Fault level? why it is calculated? how will u decide same for our plant?

0 Answers  

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What kind of Neutral CT can be placed in 11/0.433KV transformer to be used and what are its specification?

0 Answers  

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how the direction relay sense rhe directional fault?it's forward or reverse?

2 Answers  

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We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?

0 Answers   Siemens,

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-----------means a source which can supply a constant voltage to aload irrespective of the valu of load resistance.

2 Answers  

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HOW DOES THE ELECTRONIC ENERGY METER WORKS?

0 Answers   Core Solutions,

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why Induction Generators are not "Black start" ? and apart from WTGs where this types of generator are generally used?

0 Answers  

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Can u Explain about the electronic trivector meter and the use of data converters in them?

0 Answers   Tricom,

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Which standard we are following earthing resistance test

0 Answers  

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What is the different type of class in CTS and why it is required

2 Answers  

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how we calculate electrical load on a building according to area?

0 Answers   HFCL,

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