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  • Technical Article: The Mechanical Voltage Regulator
    This type of voltage regulator has been in use for more than 50 years and has seen refinements throughout the years primarily with advances in control technology and servo drive systems. This type of voltage regulator dominates the electric utility market and is the most popular type outside
  • Technical Article: The AC Automatic Voltage Regulator
    The automatic voltage regulator or AVR, as the name implies, is a device intended to regulate voltage automatically: that is to take a varying voltage level and turn it into a constant voltage level.
  • Technical Article: Electronic Tap Switching Voltage Regulator
    The typical electronic tap switching voltage regulator works very much like the mechanical tap switching regulator - except that it replaces mechanical servo drives and brushes with solid-state semiconductor switches. Rather than using a motor to move brushes connected to the regulator output
  • Technical Article: Electronic Voltage Regulator Advantages & Disadvantages
    The EVR is the modern standard for voltage regulation in most power quality applications. While an EVR will be about 25% higher in cost than a comparable mechanical voltage regulator, the difference in correction speed often precludes the use of mechanical units. * Output voltage regulation is good
  • Technical Article: Double Conversion Electronic Voltage Regulator Operation
    The double conversion electronic voltage regulator differs significantly in operation from the tap switching type EVR. The double conversion EVR uses a rectifier to convert AC power to DC and then uses an inverter to convert the DC power back to AC. Voltage regulation is obtained in one of two ways
  • Technical Article: Mechanical Voltage Regulator Characteristics - Power Quality vs Line Drop
    such as: electromechanical voltage regulator or stabilizer, mechanical tap changing voltage regulator, tap switching voltage regulator, motorized variable transformer, motorized variac, magnetic induction voltage regulator or stabilizer, servo voltage regulator or stabilizer, motor-driven variable
  • Technical Article: Mechanical Voltage Regulator Advantages & Disadvantages
    Because mechanical voltage regulators must physically move components, their speed in correcting output voltage fluctuations is very slow. Mechanical AVRs measure correction time in volts per second so the larger the voltage correction required, the longer the correction will take. Large voltage
  • Technical Article: Magnetic Induction Voltage Regulator Operation
    Another means of changing output voltage in a transformer is to alter the physical orientation of the primary and secondary relative to each other. In a transformer the primary windings produce a magnetic flux field that induces current to flow in the secondary windings. Physically repositioning

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