ac voltage

Very often, the relays do not need to be directional, and then no ac voltage source is required.

For AC voltage measurement, an rms converter circuit or a precision rectifier circuit convert the AC signal into a DC voltage.

If the AC voltage at the input is large, part of this signal is rectified, producing an error in the DC signal being measured.

When performing AC voltage testing on the main circuits, pay special attention during this procedure to voltage transformers, cables, etc.

transformer; neutral-point insulation; on-site examination; AC voltage-endurance test; partial discharge measurement.

The Frequency-tuned Series Resonant AC Voltage Withstand Test System has been CIGRE recognized as the best field test system.

The system can supply stable 220 V AC-voltage with a simplified main circuit.

It must be incorporated into the meter and the scale must be drawn to indicate the correct value of AC voltage.

The voltage applied to said electrode is a pulsed voltage of plus and minus or an AC voltage of plus and minus.

Thus, each UPS can either provide AC voltage source independently, or be connected with others in parallel for capacity expansion.

Electrical loads can be of three types: impedance load, AC voltage sink load or AC current sink load.

A two-degree-of-freedom controller for AC voltage regulation and stabilization in power system is studied.

however, the benefit of this sacrifice is limited because of the inverse relationship between power efficiency and the ac-voltage magnitude.

The first aspect is the research on the prebreakdown characteristics of vacuum interrupters under ac voltage.

Corona is caused in part by the AC voltage changing from positive to negative with each cycle.

The traction inverter provides VVVF three-phase AC voltage for traction motors.

In the labs I visited, metrologists calibrate resistance, capacitance, DC voltage, and AC voltage and current.

Thereforeit is very necessary to develop a highly efficient and reliable ac voltage-stabilized source as the second power supply ofload.

Either AC Voltage or DC Voltage can be connected.

DC voltage is determined by AC voltage, inductance on the AC side, and load.

The water treeing in samples under a series of AC voltage is detected.

Contacts for use in AC voltage circuits shall be rated for 2 amperes minimum at 220VAC.

An AC Voltage Regulator with Chop-control Used for Electrostatic Precipitators

Several Recommendations on Improving Relay Protection AC Voltage Switching Principle

Eliminating Input Current Harmonic of the Arc Welding Power Source Using AC Voltage-Elevating Method

AC Voltage Regulating Circuits by Artfully Using Bidirectional Thyristors

Three-phase series AC voltage controller and compensation voltage calculation

The low frequency AC voltage superimposition method for monitoring of power cable insulation

Three-phase AC Voltage-regulating circuit with thyristor full-wave controlled rectifier

Study on the Prebreakdown Characteristics of Vacuum Interrupters under ac Voltage

Photoelectric Feedback Type AC Voltage- stabilized Source

The Existing Problems of Thyristor Application in Non-contact AC Voltage Stabilizer

Research on AC Voltage Stabilized Power Supply With the Double-Oriented Inverter

Maintenance of Reference AC Voltage Measurement Standard

Research on variable frequency control measure for AC voltage regulation

Parameter Optimization of Snubber for Switch of AC Voltage Regulator with Chop Control

An Added Monitor Circuit for Selecting Measure Range of Transistor AC Voltage Meter

Analysis and Simulation of Three-phase Three-wire AC Voltage Regulation Circuit Based SCR

Research on Novel Harmonic Elimination AC Voltage Regulator

Influence of AC voltage circuit on zero-sequence direction protection

Measurement method for AC voltage distortion of aircraft power system

Three-phase high accuracy full-automatic AC voltage stabilizer SJW series

Light Emission Characteristics before Flashover along Surface of Polymer under AC Voltage in Vacuum

Design of an AC Voltage Controlled Current Source

A Survey of High Performance AC Voltage Regulating Technologies

The Application of Temperature Sensor for Measurement of AC Voltage

Proposal for AC Voltage Withstand Test for Electric Power Capacitor

Research on Trigger Methods for Thyristor AC-Voltage Regulator

magnetic resonance AC voltage stabilizer

The new demands of IEC standard for XLPE cable and the status of AC voltage withstand test on XLPE cable

Partial Discharge Detection in GIS AC Voltage Withstand Test

Research of Switch Type AC Voltage Regulating Technique

Development of AC Voltage-Stabilized Power Source with Auto-compensation

Design of AC Voltage-regulating Speed Control System for Crane

Trend of AC Voltage Regulating and Stabilizing Source

Design of automatic AC-voltage modulating device

An AC voltage-stabilize power supply under soft switching and DSP

Study of AC Voltage Regulating Based on VF Technologies

A Novel Method for Quick Measuring AC Voltage Virtual Valve

The design that improved the ability of AC voltage standard

On-site AC Voltage Withstand Test of High Voltage XLPE Power Cable

AC Voltage Measurement Based on Correlation Analysis Technology

TVS AC Voltage and Speed Regulating Set for Moment Motors

Realizing Design of Adjustment of AC Voltage Based on Single-Chip Microprocessor System

Site Test and Application of De-excitation by AC Voltage

A Type of Chopped Mode PWM AC Voltage Regulating System

Research on Application of AC Voltage Regulating Based on VF Technologies

Measure methods of AC voltage and current

Measuring Frequency of AC Voltage by PC

Study and test of AC voltage stabilizer based on current feedback control

Analysis of Corona in Air Under AC Voltage

Three Phase AC Voltage Monitor

Speed Limit Switch for DC and AC Voltage

A new method of AC voltage measurement

A Discussion on How to Measure the Reading of the AC Voltage

The Measurement of AC Voltage TRMS