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What is the secondary rating of a 50KVA transformer?
The secondary current is determined by the load, not by the transformer. For example, if the secondary voltage is 50 V and the load is 100 ohms, then the secondary current will be 0.5 A. If the load is 25 ohms, then the secondary current will be 2 A. It is important that a continuous secondary current doesn't exceed the rated secondary current of the transformer.
What is the rated current when a step down transformer is 50kVA and 120v in step down to 24v?
The VA of the transformer is the product of the amps x the volts. V x A = Watts. 50kVa is equal to 50,000 watts. It holds true on the primary and the secondary. The formula to use is I = W/E. Amperage = Watts (V x A)/volts.AnswerThe above answer will determine the rated currents of the primary/secondary windings. But the actual currents (which shouldn't exceed their rated values for any length of time) are determined by the load. For example, with no load, no secondary current will be flowing, and the primary current will be reduced to its magnetising current value.
What is the max amps output if a transformer is 50kVA 550V going in step down to 415 and 240V?
416 A and 208 A respectively
How is current controlled in welding transformer?
in welding machine, the transformer used is basically a current transforrmer. so by changing the tap of secondary side of transformer, we can increase or decrease the current in the transformer.
What is principle of Current transformer?
why does have to short-circuit secondary wire of current transformer ?
What is the secondary rating of a 50KVA transformer?
The secondary current is determined by the load, not by the transformer. For example, if the secondary voltage is 50 V and the load is 100 ohms, then the secondary current will be 0.5 A. If the load is 25 ohms, then the secondary current will be 2 A. It is important that a continuous secondary current doesn't exceed the rated secondary current of the transformer.
What is the rated current when a step down transformer is 50kVA and 120v in step down to 24v?
The VA of the transformer is the product of the amps x the volts. V x A = Watts. 50kVa is equal to 50,000 watts. It holds true on the primary and the secondary. The formula to use is I = W/E. Amperage = Watts (V x A)/volts.AnswerThe above answer will determine the rated currents of the primary/secondary windings. But the actual currents (which shouldn't exceed their rated values for any length of time) are determined by the load. For example, with no load, no secondary current will be flowing, and the primary current will be reduced to its magnetising current value.
How voltage is raised when current is reduced in a step up transformer?
first you should know transformer transforms (step up/down) voltages without change in power except for a slight loss in power due to losses in the transformer. i.e power is constant except for this loss which is ignored for simplicity in equations below (keep it in mind) P = Voltage x Current x Power factor power p=v i cos fi (Where fi is the phase angle between voltage and current caused by inductive loads) here you need a step up trans lets take p is 50 kva 11kv/440v so at primary and secondaty p is 50 kva for primary i.e low voltage side 50kva= 220*i* 0.8 (say) secondary 50kva= 11000*i*0.8 Given input voltage and current and output voltage you can calculate secondary current (I). enjoy
What is difference between breakdown voltage and dielectric strength of transformer?
The dielectric strenght of a transformer represents the maximum voltage permissible to apply across the transformer insulation i.e. between the transformer winding to another part of the transformer, normally the chassis or another winding and without break-down of the insulation ocurring (e.g. arcing). The breakdown voltage of a transformer represents a voltage that exceeds its dielectric strenght and that causes breakdown e.g. arcing across the insulation.
How is current controlled in welding transformer?
in welding machine, the transformer used is basically a current transforrmer. so by changing the tap of secondary side of transformer, we can increase or decrease the current in the transformer.
What is the max amps output if a transformer is 50kVA 550V going in step down to 415 and 240V?
416 A and 208 A respectively
What is principle of Current transformer?
why does have to short-circuit secondary wire of current transformer ?
Difference between potential transformer and current trasnformer?
The difference between current transformer and potential transformer is that the secondary of a current transformer can not be open circuited while under service whereas that of the potential transformer an be open circuited without any damage to the transformer.
What is zero current transformer?
It is a transformer with No load attach to it.
What is the reason for using a neutral current transformer on a transformer?
A current transformer is primarily used at the neutral point of a transformer for earth fault protection. A neutral current transformer will measure any ground fault current which will essentially flow from the star point of the transformer. A fault-detection device other devices is connected to the current transformer and, if the fault current exceeds a certain trigger value, the fault-detection device will give a trip command to an earth-fault relay to disconnect the supply of electricity to the transformer.
How calculate primary current in transformer the 50kva rating and 11kvprimary voltage?
The primary current is determined by the secondary current. So, if you don't know the secondary current, you cannot work out the primary current.If the secondary isn't connected to the load, then the primary current is simply the primary voltage divided by the impedance of the primary winding.You can, though, work out the 'rated' primary current (i.e. the value of current the primary can carry, continuously). For a single-phase transformer, this will be its rated apparent power (in volt amperes) divided by its rated primary voltage. So, in this particular case, we are looking at:rated primary current = (50 x 103) / (11 x 103) = 4.55 A
A transformer can only the voltage of an alternating current?
A transformer can only increase or decrease the voltage of an alternating current, and it is called step-up transformer or step-down transformer accordingly.
