autotransformer वाक्य
उदाहरण वाक्य
मोबाइल
- The autotransformer article could benefit from having two drawings side by side, one showing a normal transformer and the other an autotransformer.
- See Autotransformer # Limitations where it says what could appear on the low voltage tap if there were an open circuit in the turns it covers.
- The line-interactive UPS is similar in operation to a standby UPS, but with the addition of a multi-tap variable-voltage autotransformer.
- A large three-phase autotransformer may have a " buried " delta winding, not connected to the outside of the tank, to absorb some harmonic currents.
- It sounds like you need an Autotransformer to step up the voltage, just like Interact " ) " 09 : 51, 22 May 2007 ( UTC)
- This may also be performed by a " buck boost transformer " which is distinct from an autotransformer, since the former may be wired to provide galvanic isolation.
- The transient is of a very short duration, less than 5 microseconds and occurs when the motor current from the secondary of the autotransformer is forced to the line voltage.
- The autotransformer architecture was retained, but the source of power changed from the Metro-North New Haven Line system to the Con Edison-supplied Van Nest Substation ( ).
- Reactance-type tap changers, when operating in oil, must allow for the additional inductive transients generated by the autotransformer and commonly include a vacuum bottle contact in parallel with the diverter switch.
- Depending on the design, changing the autotransformer tap can cause a very brief output power disruption, which may cause UPSs equipped with a power-loss alarm to " chirp " for a moment.
- A special form of autotransformer called a " zig-zag transformer provides a path for current that is common to all three phases ( so-called " zero sequence " current ).
- The circuit has advantage over starting with a regular autotransformer, which needs to be at some point completely disconnected during the start inducing high voltage impulses, which can damage the electrical insulation of the stator.
- For voltage ratios that don't exceed about 3 : 1, an autotransformer is cheaper, lighter, smaller, and more efficient than an isolating ( two-winding ) transformer of the same rating.
- At this stage switch "'2 "'is opened and momentarily the motor is supplied by even lower voltage, because the windings of the autotransformer act as inductors connected in series with motor.
- A further transient problem is that with a single coil construction and a star switch, the autotransformer acts as a step-up transformer during the < 5 microsecond period at contact separation of the Star point switch.
- The autotransformer system enforces the traction return current taking its intended path, while reducing the transmission losses, and therefore achieves both required objectives, of controlling return current leakage to earth and ensuring low energy loss, simultaneously.
- In an autotransformer part of the current flows directly from the input to the output, and only part is transferred inductively, allowing a smaller, lighter, cheaper core to be used as well as requiring only a single winding.
- At periodically spaced "'Paralleling Stations "'within each electrical section the tracks'catenary wires are connected together to one side of an autotransformer and the feeder wires are connected together to the other side of the autotransformer.
- At periodically spaced "'Paralleling Stations "'within each electrical section the tracks'catenary wires are connected together to one side of an autotransformer and the feeder wires are connected together to the other side of the autotransformer.
- One basic method to reduce the starting current is with a reduced voltage autotransformer with taps at 50 %, 65 % and 80 % of the applied line voltage; once the motor is started the autotransformer is switched out of circuit.
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