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What will be the recommended size cable size for 400 KVA transformer?
Wiki User
∙ 11y ago
3r x 300sq.mm Al. ar
UG cable
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Wiring is sized by the amperage that is used by the load. The formula for amps is I = W/E. Amps = Watts (or VA)/Volts. As you can see an answer can not be given unless a voltage is stated. The lower the primary voltage the larger the amperage will be and likewise the larger the wire size will be.
Wiki User
∙ 11y ago
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A transformer with a primary of 1200 turns and a secondary of 400 turns has what ratio?
A transformer primary of 1200 turns with a secondary of 400 turns is a ratio of 3 to 1.
For 100kw which cable size is good and how to find out cable size?
100 kw is the power drawn by the load. to calculate the cable size you need to know the voltage. From that you can calculate the current. this decides the cable size. for example if the voltage is 400Volts then the current flowing in the circuit when the load is 100 KW will be 250 amps. (100,000/400). for 250 amps to flow with out causing excessive heating of the cable the cross sectional area of the copper cable should be 150 sq mm.for a round cross section the diameter will be roughly 15mm.
Why differential relay is not used for 11kv transformers?
It depends what you mean by an '11-kV transformer'; do you mean a primary transformer (33/11-kV transformer) or a distribution transformer (11-kV/400-230-V transformer). Differential protection IS offered on primary transformers.
What is the cable size for 7.5 kw 3 phase motor?
Assuming it is a 400 V three-phase motor, the phase current is 11 amps, or more if the power factor is less than 1.0 (or the supply voltage is different). If it is a 400 V motor the cable should be capable of carrying 16 amps, so a 2.5 mm-sq 4-core cable is needed.
How do i convert from 380 volts to 220 volts?
If these are the exact voltages that you need you will need an auto transformer to obtain these voltages. If these voltages are nominal voltages and are of a three phase four wire configuration, the 220 voltage can be obtained from the three phase legs to the neutral (ground) connection. The equation to use is 400/1.73 = 231 volts.
What size feeder service cable is required in step up transformer 220 to 380V in 300 amp cirquit breaker?
250 kcmil in copper and 400 kcmil in aluminum. kcmil = 1000 circular mils.
What is the cable size required for a 400 amp and 350 amp load?
350mcm
A transformer with a primary of 1200 turns and a secondary of 400 turns has what ratio?
A transformer primary of 1200 turns with a secondary of 400 turns is a ratio of 3 to 1.
What size of armoured cable to run 400 m to carry 5kw?
This is a voltage drop question. To answer is question the voltage must be stated.
For 100kw which cable size is good and how to find out cable size?
100 kw is the power drawn by the load. to calculate the cable size you need to know the voltage. From that you can calculate the current. this decides the cable size. for example if the voltage is 400Volts then the current flowing in the circuit when the load is 100 KW will be 250 amps. (100,000/400). for 250 amps to flow with out causing excessive heating of the cable the cross sectional area of the copper cable should be 150 sq mm.for a round cross section the diameter will be roughly 15mm.
The insulation resistance of a transformer winding can be easily measured with?
It depends on the rated voltage of the transformer winding -are you talking about a 12-V transformer winding or a 400-kV transformer winding? Obviously, there is no one answer to your question!
What has a maximum speed of 400 Mbps?
A Fire Wire 400 cable.
Why differential relay is not used for 11kv transformers?
It depends what you mean by an '11-kV transformer'; do you mean a primary transformer (33/11-kV transformer) or a distribution transformer (11-kV/400-230-V transformer). Differential protection IS offered on primary transformers.
Why should a transformer designed for 400 hertz operation not be used for 60 hertz operation?
It's because running a transformer below its correct frequency means that the magnetic flux density in the iron core is too high. A 400 Hz transformer used at 60 Hz will have a magnetic field 400/60 times too high. That will definitely cause dangerous overheating, even when no load current is drawn from the transformer. The only way that transformer could be used is to run it at a lower voltage, 60/400 times the voltage. The flux density is proportional to the voltage divided by the frequency, so a 240 V 400 Hz transformer must be used only at 36 volts on a 60 Hz supply. The load current specification stays the same, if it's a 5-amp transformer that is the same on both supplies. 400 Hz power systems are used in aircraft, because the higher frequency allows smaller and lighter transformers to be used.
Where is throttle cable in Lexus sc 400?
The throttle cable is located on top of the throttle body.
What oil do you use in a Yamaha kodiak 400?
10w-40 is recommended
What size service cable is required for 120 volt 150 amp direct bury 400 feet single phase?
A 1000 MCM copper conductor will limit the voltage drop to 3% or less when supplying 150 amps for 400 feet on a 120 volt system.
