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If motor is Delta connected; yes, all three meters will show current may not be exactly 30 amps. If motor is Star connected the current would be 30 / 1.732 nearly shown by all three meters.

Krueger is one of the manufacturer of high temperature withstanding motors. You can enquire with them for suitable rating of the motor & voltage.

if 150 a cb (in mdp) have thermal & short circuit setting variable / protection available; one can use.

We have to select motor for smoke extraction purpose. Could anybody would explain about comparison / differentiation of standards for 3 phase 415 volt induction motor. Standards like IEC, BS, NEMA,...

Dear Sir, PVC insulated cable has got more current carrying capacity. Reason: Current carrying capacity of cable mainly depends on size of conductor first. Secondly, the insulation type which causes...

This is regarding requirement of UPS capacity required for desktop, monitor & printer... Please enquire with the manufacturer / supplier about wattage or VA capacity of each appliance. Add together....

Capital y indicates star connection on hv winding. Small n against the same indicates neutral is brought out.
Small letter y indicates lv winding start connection. Small n against the same indicates...

Voltage or current unbalance relays are directly applied / connected on the motor feeder not on the transformer feeder.

Silicon steel is a ferrous magnetic material in the transformer laminations. Silicon steel is used to maintain minimum magnetic losses in the transformer.

The transformer shall not be unbalance loaded more than 15-20%. More the unbalance load... more the unbalance current flown through through neutral earth. Transformer efficiency drastically reduced.

Primary winding is star connected. Secondary winding is also start connected. Tertiary winding is delta connected. Third winding is meant for nullifying 3rd harmonic effect. Normally, load is not...

Dear sir, refer to cable catalogue to find out resistance per kilometer length of the cable. Same can be converted to feet. Now you have resistance of cable, current you are knowing... find out size...

Dear Samartha Prabhu, What exactly you want to say? We are unable to understand your requirement. Please repeat the question in brief. Regards... S. M. Sathe

Basically, the starter is a combination of switch, fuse, thermal overload relay and speciality of no volt coil built on for contactor. In the event of power failure while motor is running; no volt...

Dear All, Universally it is known / understood that whenever motor direction is to ve viewed; it has to be viewed from Non Driving End i.e. NDE side i.e. Cooling Fan side. (If R, Y, B or A, B, C of...

Sir, my query on ceiling fans. I am resident of india. I have seen 99.9% ceiling fans are rotating anticlockwise when seen from the side from where we get breeze. However, all table fans rotates...

Yes. Main 3 phase mcb can be distributed for single phase provided all three poles are connected in series of the single phase line.

For aluminium cables; consider 1 ampere per square mm. of cross section. For copper cable consider 1.4 ampere per sq.mm. of cross section. But, moreover to this; depending on grouping of cables,...

Try stamford make generator avr.

Yes, as per above answer, rod earthing, pipe earthing (normally up to 40 mm dia. Pipe), plate earthing, bore earthing with chemical compound like bentonate. Etc.

Motor full load amps (fla) is 40 ampere. Accordingly refer to the cable catalogue and select considering factors like temperature, length, grouping of cables in cable tray for derating of the current...

Could u please refer to ieee or iec rules?

We donot know your email id. My id sathe1963gmail.
For 10 kva means 8 kw means current is around 16 amperes. Most suitable and reasonable cable size is 4 sq.mm. Copper (if length is more than 10...

Mahindra or raychem make mv or lv cable jointing kits are available in market. From which country you are?

Minimum 50 sq. Mm. Of copper 3 core, pvc insulated cable

In simple language this is current transformation ratio called as ct ratio.

We understand that your supply voltage 480 volts is phase to phase voltage. Check for your individual transformer output voltage whether is 110V between two leads or it 63.5 Volts? It it is 110V...

Interputting capacity of a circuit breaker is predecided... category wise by the manufacturer.
Which KA rating breaker is to be selected based on the maximum short circuit current ability to deliver...

Dear Sir,

Computation of load of magnetic contactor and circuit breaker can not be compared to each other. Because: Magnetic contactor requires continuous power supply thus, continuous VA burden...

Dear Sir,

What ever the loads you have listed are including stand by equipments.

Your actual load would be only running load i.e. the motors which would work
Continuously. (Standby load is not...

Generally, upstream circuit breaker or isolator shall be of higher rating than the down stream breaker. In your case if both the switches / isolating points are in near by area, there is no problem....

In subject line write quotation / offer for your xyz product. Start with... dear sir / madam, this has reference to your enquiry (either verbal or through their mail / fax), we are pleased to submit...

Answer from a spiritual way:

Our birth has resulted from sex. Hence, no once can escape from sex. But... do the following: At least, for 5 minutes in a day... sit calm & quitely and watch on your...

Please elaborate your question stating size of wires used enabling us to answer.

Or else, you can use a proximity sensor... teknic uchenar make... with a relay to give input to your PC.

Tell us whether the vcb is indoor our outdoor type?

Insulated wire also will do of same gauge. But why to pay for more cost of insulation? Hence, bare conductor is used. There is no harm if insulated conductor is used.

To satisfy female partner shall be the actually motto during sexual course. Normally male partner gets orgasm earlier and female later. Tip for male partner to satisfy female partner: They should...

Dear sir,

you are stating that you know the kw. Then what else you want. If you want to know the current in amps use usual formula to find out one of the unknown parameter: Kw = sq.rt of 3 *...

• Due to the low contact velocity and contact travel, the energy requirement of SF6 breaker using self-extinguishing principle, is very low. This is also because; the energy for extinguishing the arc...

Dear sir, wherever one has to use for motor protection; then one has to go for MPCB i.e. motor protection circuit breaker. Elsewhere one can connect power supply through mccb... moulded case circuit...

What type of power plant you are going to install? Diesel, gas, hydro, hydle??

Dear Sir,

I could not understand your question. But still, I would try to express as below:

Collect data of all electrical driven equipments in following format:
1. Sr. No, 2. Name of...

dear danar,
your answer is pending from April 08. Fault mva = base mva / % impedance.
With this formula one can calculate fault mva. Once we get mva then a to be calculated with reference to...

Sir, these are because of form factor i.e. 1.1

Dear friend, it's a very long list where in you can find comparison between vacuum circuit breaker vs. sf6 breakers. Comparison is readily available with me. But due to space constraint on this very...

Dear prabhakar singh6: your question has remained unanswered for more than last 9 months. I have got answer for your each query. But due to space constraing, could not be explained in detailed on...

Dear masgagong:

If fact, you are aware that window type cts are not directly connected in the circuit like wp cts. A bar primary conductor is just passed through the window of the ct. Cts are only...

Mpcb means 'motor protection circuit breaker' the name it self tells that motor protection means it has builit in provision for overload at stiputalted and setted current of the range selector. This...

In india, it is called as cut out system.