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What is the kva rating of a transformer that has a secondary winding that's delivering 10 amps at 480 vac?
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What happened if you connect 230V to secondary of transformer whose voltage rating is 230V to 18V?
if you drove the 18V winding with 230V the transformer would burn out, if it didn't catch fire first
Why to ground star side of transformer?
Star connections allow for grounding of the system, which is required for single phase loads, and beneficial for three phase for a number of different reasons. Because it can be grounded, it can also supply ground current to operate protective devices. There may be other more specific reasons applicable to what exactly you are looking at (special case application? voltage level? surrounding system? etc.).
How do you calculate MVA rating of power transformer?
The product of the secondary rated current and the secondary rated voltage will give you the rated V.A of the 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 are transformers rated?
A transformer's capacity is rated in volt amperes(V.A). This is the product of the secondary winding's current rating and voltage rating.
What happened if you connect 230V to secondary of transformer whose voltage rating is 230V to 18V?
if you drove the 18V winding with 230V the transformer would burn out, if it didn't catch fire first
How do you calculate current capacity of transformer?
The secondary winding's current rating is the rated apparent power of the transformer (expressed in volt amperes) divided by its voltage rating (expressed in volts). This applies to both step down, and step up, transformers.
What is rated voltage in transformer?
A: A transformer will transform the AC input to a low or hi output as required by a ratio of input to output. The power will be expressed a KVA or kilo volts to ampere ratio. It also will have a rating of maximum voltage for the simple reason of winding to winding insulation and primary to secondary isolation because if breakdown occurs the transformer will burn out promptly.
Why to ground star side of transformer?
Star connections allow for grounding of the system, which is required for single phase loads, and beneficial for three phase for a number of different reasons. Because it can be grounded, it can also supply ground current to operate protective devices. There may be other more specific reasons applicable to what exactly you are looking at (special case application? voltage level? surrounding system? etc.).
How do you calculate MVA rating of power transformer?
The product of the secondary rated current and the secondary rated voltage will give you the rated V.A of the transformer.
What is kva rating of single phase transformer?
This is the rated output of the transformer, obtained by multiplying the rated secondary voltage by the rated secondary current. And it's 'kV.A', not 'kva'.
What are common efficiencies for transformers?
Transformer utilization factor is the ration of power delivered to the load and ac rating of the transformer secondary.
What is the amp rating of 100va transformer?
The amp rating for a 100VA transformer will vary depending on the actual voltage of the transformer. Transformers have both a primary and a secondary voltage.
Why the rating of transformer in kva?
because we dont know power factor of the secondary laod
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 are transformers rated?
A transformer's capacity is rated in volt amperes(V.A). This is the product of the secondary winding's current rating and voltage rating.
What is the current of a 45 kva transformer?
Presumably, you are asking what is the rated secondary current for a 45 kV.A (not 'kva') transformer? The answer depends on its rated secondary voltage. To obtain the rated secondary current, you divide the (apparent) power rating by its secondary rated voltage.
