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Are number of turns on primary side and secondary side same in case of star star connections?
The number of primary and secondary turns, or turns ratio, determine the secondary voltage given a particular primary voltage. So, for instance, if the primary voltage is 480/277 wye, and the desired secondary voltage is 208/120 wye, the turns ratio would be 2.3:1. If the primary and secondary voltages are the same, then yes, the number of turns on primary and secondary would be the same. But if you're not converting delta to wye or vice-versa, why would you have a transformer with the same input and output voltage, other than an isolation transformer?
In a 3-phase high voltage star-star connection 140KVA transformer and load phase voltage is 115v and frequency is 400hz what is the total load current?
Maximum load current on a 140KVA, three phase transformer when the output voltage is 115 v phase to phase is: 140kva / sqrt (3) / 115 = 703 Amps. frequency does not matter here.
Should a star-delta motor be supplied wye or delta power?
A star-delta motor should be supplied star-delta.Wye is simply another name for star. Star-delta motors use a star or wye configuration to start, and a delta configuration to run. This reduces the voltage on the windings during the high current starting time.
What is vector group YNd11?
we use Capital letters for the High Voltage ( Primary ) and we use small letters for Low voltage secondary so in this case: YN: it's refer to High Voltage, and it means the high voltage connection is Star and Neutral is Brought out. d: refer to Low Voltage and it means that low voltage connection is delta. 11: mean LV lead the HV by 30 degree. and others number it will be like bellow 01 02 03 04 05 06 07 08 09 10 11 12 30 60 90 120 150 180 210 240 270 300 330 360 or 0
What is the formula use for calculation voltage and current in star and delta?
Balanced Star (Wye) Connected Systems:Line Voltage = 1.732 x Phase VoltageLine Current = Phase CurrentBalanced Delta Connected Systems:Line Voltage = Phase VoltageLine Current = 1.732 x Phase Current
The Most suitable and economically connection for small high voltage transformer is?
delta star
Power a 415volt motor with 480volts?
in low voltage connection in wye (star conncetion) 415v high voltage connection in delta 480v
What is line voltage and line current in star connection define?
In star the voltage from line to neutral is 1/sqrt(3) times the nominal voltage, while the load current equals the line current. In delta the voltage between lines is the nominal voltage, while the load current is 1/sqrt(3) times the line current (for a balanced load). So a delta load needs 3 times the resistance compared to a star load of the same power.
Why you use delta star transformer instead of star star transformer in a consumer plant?
Generally speaking high-voltage three-phase systems are three-wire systems comprising three line conductors, so the high-voltage primary of the transformer is delta-connected (a delta connection has only three terminals, to which the three line conductors are connected). European low-voltage three-phase systems are four-wire systems, comprising three line conductors and a neutral conductor. To obtain this, the transformer's secondary must be star (wye) connected, with its earthed star point providing the neutral.
Are number of turns on primary side and secondary side same in case of star star connections?
The number of primary and secondary turns, or turns ratio, determine the secondary voltage given a particular primary voltage. So, for instance, if the primary voltage is 480/277 wye, and the desired secondary voltage is 208/120 wye, the turns ratio would be 2.3:1. If the primary and secondary voltages are the same, then yes, the number of turns on primary and secondary would be the same. But if you're not converting delta to wye or vice-versa, why would you have a transformer with the same input and output voltage, other than an isolation transformer?
In a 3-phase high voltage star-star connection 140KVA transformer and load phase voltage is 115v and frequency is 400hz what is the total load current?
Maximum load current on a 140KVA, three phase transformer when the output voltage is 115 v phase to phase is: 140kva / sqrt (3) / 115 = 703 Amps. frequency does not matter here.
What is 208 voltage star?
208 voltage star refers to a three-phase electrical system where the voltage between any two phases is 208 volts. This type of system is commonly used in commercial and industrial applications to power machinery and equipment. Voltage configurations such as 208Y/120V or 208/120V are typical examples of 208 voltage star systems.
Mike Myers went to the same high school as what star from Will and Grace?
Eric McCormack
Should a star-delta motor be supplied wye or delta power?
A star-delta motor should be supplied star-delta.Wye is simply another name for star. Star-delta motors use a star or wye configuration to start, and a delta configuration to run. This reduces the voltage on the windings during the high current starting time.
Why neutral for High voltage?
High voltage transmission and distribution lines utilise three-phase electricity. There are two commonly-used connections used in this system, termed a 'delta' and a 'star' (or 'wye') connection. A delta connection provides three energised conductors, termed 'line conductors', while a star connection provides three energised conductors ('line conductors') together with a neutral conductor. However, in the case of a star connection, provided the load is balanced, no current flows through the neutral conductor. In the case of high-voltage transmission and distribution lines, their loads are very close to being balanced, so there is no need to provide a neutral in the case of a star-connected system, as any slight imbalance can be compensated for in slightly different line currents.
Can you connect a 277V ballast to 208V line service?
No. A 277 volt ballast needs the correct voltage to operate. The 277 voltage is derived from the star point voltage of a 480 volt three phase system (277/480). The 208 voltage is a three phase line voltage whose star-point voltage is 120 volts (120/208).
What is DY11 transformer?
A DY11 transformer is a three-phase transformer configuration where the high voltage winding is connected in a delta (Δ) configuration and the low voltage winding is connected in a star (Y) configuration. This configuration is commonly used in power distribution systems to step down high voltage to a lower voltage for industrial and commercial applications.
