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Why would two 240 volt transformers on different primary phases have their secondary windings wired in series?
LakeshiaPlum
What you are probably looking at is a 240 volt three phase system with the secondaries wired in an open delta configuration.
Wiki User
∙ 9y ago
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What allows simple transformers to step up or down?
The voltage ratio in transformers used in power supply is set by the ratio of the number of turns on the primary and secondary windings.
What is the difference detween single phase and three phase transfomer?
The construction of the core is different. Most 'core-type' three-phase transformers have three limbs. Additionally, there are three sets of primary windings, and three sets of secondary windings.
A transformer has 20 primary windings and 100 secondary windings If the secondary voltage is 25 V find the primary voltage?
Voltage on primary/Primary turns = Voltage on secondary/Secondary turns
Why are some transformers constructed with the primary and secondary windings divided into halves?
I have a feeling it's to make manufacturing/soldering easier. But I'm not sure.
Why transformers must use AC urrent?
Transformers work on the principle of mutual induction. This requires a continuously-changing magnetic field to link the primary and secondary windings, which can only be produced by a changing current in the primary winding.
What are the two coils in a transformer?
primary and secondary coilsAnswerPrimary and secondary windings.
If a transformer has 20 primary windings and 100 secondary windings and the secondary voltage is 25 what is the primary voltage?
Transformer step-up/step-down voltage is turns-ratio, so if a transformer has 20 primary windings and 100 secondary windings (a turns-ratio of 1 to 5) and the secondary voltage is 25, then is the primary voltage is 5.
Is it a step up or a step down a transformer has 20 primary windings and 100 secondary windings the secondary voltage is 25v?
If a transformer has 20 primary windings and 100 secondary windings, it is a step up transformer. If the secondary voltage is 25v, the primary voltage will be 5v, because the turns ratio is 20 to 100, or 1 to 5.
What is the three phase transformer?
it has three primary windings & three secondary windings.
What is difference betweena step up transformer and step down transformer?
The difference between the two transformers is the coil ratios between the primary and secondary windings. A transformer that increases voltage from primary to secondary has more secondary winding turns than primary winding turns and is called a step-up transformer. Conversely, a transformer with fewer secondary windings does just the opposite and is called a step-down transformer.
What are the uses of instrument?
The term, 'instrument transformer', is applied to current transformers and voltage transformers (known, in North America, as 'potential Transformers'). The primary windings of instrument transformers are connected to high-voltage systems, and their secondary windings provide outputs to measuring instruments or protective relays. They also provide isolation from the high-voltage system for the purpose of safety.
Function of tap chenger in transformer?
The tap changer changes the ratio of primary to secondary windings by physically adding or subtracting windings from the primary or secondary. An on load tap changer (LTC) allows dynamic voltage control, which is important when loading of transformers, and the system in general, varies (if the primary voltage sags, the LTC can be used to increase the secondary voltage so customers don't see this sag).
