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The Wye (also know as Star - especially in the motor rewind industry) is a 4-wire system which provides two different supply voltages. The center-point of the Wye is the system neutral and is usually solidly grounded. Where it is desirable to limit the phase-to-ground fault magnitude the center-point of the Wye may be connected to ground through and neutral grounding resistor or a current limiting reactor. Because the system is tied to ground it is easy to provide system ground fault protection. Three-phase loads can be connected phase-to-phase and singlephase loads can be connected from any phase to the system neutral. On a wye system, the phase unbalance currentis carried by the system neutral. On a Wye system the line current is equal to the phase current i.e. ( ILine 1 = IPhase A) and the line-to-line voltage is equal to the vector sum of two individual phase voltages i.e. (E Line1-2 = E PhaseA + E PhaseB' ). In a Wye system the phase-to-phase voltage is 1.732 x the phase-to-ground voltage. Some typical Wye system voltages are: 120/208Y, 277/480Y, 2400/4160Y, 4160/7200Y, 7200/12470Y, 7620/13200Y,and 19920/34500Y
What else can I help you with?
What three devices are usually found in series with the Y terminal of a low voltage control circuit?
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What will happen if dc voltage is applied to anop amp integrator circuit?
Just consider the a DC voltage as the function y = (DC value), lets call the DC value 1 volt. Then the integral of y=1 is y=x. The op amp will create a ramp that is representative of y=x until it saturates. Depending on the op amp, it will most likely saturate somewhere around Vcc - 2V. As soon as it hits this rail it will level off.
Where are Vpp and V rms?
Vpp is Peak-to-Peak voltage, in other words, in AC voltage, the peak-to-peak voltage is the potential difference between the lowest trough in the AC signal to the highest. Assuming the reference to the voltage is zero, Vpp would be twice the peak voltage (between zero and either the highest or lowest point in the AC waveform). Vrms is the Root Mean Square voltage, think of it as sort of an average (it's not quite that simple). For a sine wave, the RMS voltage can be calculated by y=a*sin(2ft) where f is the frequency of the signal, t is time, and a is the amplitude or peak value.
What is DYN11 of a transformer?
It's a description of the some of the electrical properties of the transformer. This is a Delta connected highside (the D), wye connected lowside (Y) that is grounded (N) and there is a 330 degree phase shift between the highside and the lowside (the low voltage is leading the high voltage by 30 degrees).
What angle is the voltage increasing at its fastest rate?
This is a simple derivation problem. Take the derivative of the AC voltage waveform (I'll assume sin (t)), and set the derivative equal to the maximum value it can attain (which is 1): cos (t) = 1, t = 0 degrees, thus for an AC waveform of y = sin(t), the fastest increase in voltage occurs at 0, 360, etc. degrees. The fastest decrease in voltage will occur at 180, 180 + 360, etc. degrees.
What connection that increases voltage?
by using Y-Y(Star) transformer..... bcoz in star VL = root 3* Vph
Is china's 3 phase voltage delta or Y?
China primarily uses a three-phase voltage system configured in a star (Y) arrangement for its power distribution. The standard voltage levels for three-phase systems in China are typically 380V for the line-to-line voltage and 220V for the line-to-neutral voltage. However, delta configurations are also used in some industrial applications and for specific equipment. Overall, the dominant system for general power distribution is the star (Y) configuration.
What is the relationship between phase and line values of current and voltage quantities for star and delta connected systems?
A: A DELTA transformer is a 1:1 voltage transfer delta to Y IS 1:2 voltage transfer. That is for 3 phase system, If the phases are not exactly matched or the voltage is not exactly right then on a Y setup there will be circulating current at the common node.
How can you test the vector group DYn11 and vector diagram?
connect the neutral point of the star (secondary) to u phase of primary, and now apply voltage to primary and measure the voltage between V&R, W&B, V&Y and V&B. when you measure voltage b/w 1. V&R the voltage must be maximum, 2. W&B Should be minimum and 3. voltage between V&Y and V&B should be same U.V&W are primary (Delta) R,Y&B are secondary (Star)
What is measured on the Y axis of an oscilloscope?
On the Y-axis of an oscilloscope, the vertical measurement typically represents voltage. This axis displays the amplitude of the electrical signal being analyzed, allowing users to observe variations in voltage over time. The scale can be adjusted to reflect different voltage levels, enabling detailed analysis of signal characteristics.
What does it mean if resistor x is steeper then resistor y?
If resistor X is steeper than resistor Y in a voltage versus current graph (I-V curve), it indicates that resistor X has a lower resistance value compared to resistor Y. The steeper slope means that for a given increase in voltage, resistor X allows a greater increase in current, following Ohm's Law (V = IR). Therefore, resistor X conducts more current than resistor Y for the same voltage applied.
The voltage generated b y a thermocouple in a pilot flame should be?
30 MV open circuit
How do you determine angle between primary line voltage and secondary line voltage of a 3-phase transformer?
You should look at the transformer vector diagram, or the type of transformer will tell you (something like YnD1, for example). If it's a Y/Y type transformer, the phase angle will be zero. If it is a D/D, it will be zero. If it's a Y/D, or D/Y, it could be +30, -30 (usually). I have seen a few strange cases where a Y/D was +150 degrees.
What three devices are usually found in series with the Y terminal of a low voltage control circuit?
cxcccxcxczxcczxc
How do you plot graph on forward and reverse diode bias?
You generally plot a graph of Voltage v/s Current (with voltage on Y axis and current on the X axis). The graph will not be a straight line.
What will happen if dc voltage is applied to anop amp integrator circuit?
Just consider the a DC voltage as the function y = (DC value), lets call the DC value 1 volt. Then the integral of y=1 is y=x. The op amp will create a ramp that is representative of y=x until it saturates. Depending on the op amp, it will most likely saturate somewhere around Vcc - 2V. As soon as it hits this rail it will level off.
What is the meaning of voltage control device and current control device y they call like this?
In vcd, input voltage controls the output current.e.g.jfet In ccd , input current controls the output current. e.g. bjt
