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Fuji FujiAC ACPower PowerRegulator Regulator[APR] [APR] Appendix Appendix INDEX INDEX ………………………………3 3 Application ApplicationExamples Examples……………………………… (Single-phase)……………… ………………40 40 Series(Single-phase) APR-D APR-DSeries ……………………4 4 APR APRModel ModelSelection SelectionItems Items…………………… ………………………………8 8 APR APRSeries SeriesSelection Selection……………………………… (Three-phase)……………… ………………46 46 APR-D Series(Three-phase) APR-DSeries Features, Features,Applications, Applications, ………………………………10 Series guration SeriesConfi Confi guration……………………………… 10 ………………………12 PWMAPR-M 12 Series……………………… PWMAPR-MSeries...

AC Power Regulator for Stabilizing Control – Fuji Electric APR APR is an abbreviation for AC Power Regulator. An APR is a device that can adjust AC voltage, current, and power steplessly. It is widely used for temperature control of electric furnaces and heaters, as well as for light dimming and AC stabilization power supplies. Fuji Electric’s APRs use thyristors, IGBTs, and other semiconductors as main devices to stabilize control. Application examples Voltage stabilization < Welding machines > < Electric discharge machines > Welding power supply Control device Machining equipment Heat controllers...

Fuji AC Power Regulator [APR] APR Model Selection Items There are three waveform control methods for APRs: a phase control method for switching with thyristors, a cycle control method, and a PWM control method for switching with IGBTs. Select a waveform control method after understanding the features of each method. Phase control method (APR-V, APR-D) The phase control method controls the voltage applied to the load from 0 to 100% by controlling the ignition phase angle α at each half cycle of the power supply frequency. Single-phase Output voltage Output voltage ,JQLWLRQSKDVHDQJOHњ Cycle control...

■ Features of each control methodThe phase control method, cycle control method, and PWM control method have the following features and are used in various ways. Item “Conversion factor Ki” of AC power regulator *The PWMAPR-M series supports B, C, and D as standard (switchable using the main unit setting). PWM-APR supports C only. D series single phase products support only T, A, and B, and three phase products support only T. Mini and aA series are not supported. For details, refer to “ ■ Feedback control method (PWMAPR-M, PWM-APR, APR-V)” on page 6 and the items in each series. —^Gradient setter^)-...

■ Fuji AC Power Regulator [APR] An APR without a feedback function outputs voltage in proportion to the output setting, but the output voltage and output current may vary due to power supply voltage fluctuations and load fluctuations. There are also loads such as those of pure metal heaters that draw several to ten times their rated current at low temperatures. Feedback control is a function that monitors the output status of the APR and automatically corrects the output so that the output is always as specified. The APR-V series offers the following feedback control methods to meet application...

APRs can be used for resistive loads (heater loads) and other loads, but the following precautions must be taken: Special attention should be paid to heater loads because the resistance value can vary greatly depending on the heater type and operating temperature, and the resistance values can change due to aging.

HFuji AC Power Regulator [APR] *KANTHAL® is a registered trademark and a trademark of the Sandvik Group. *EREMAL® is a registered trademark and a trademark of Tokai Konetsu Kogyo Co., LTD. *SiliconitL® is a registered trademark and a trademark of Siliconit Co., Ltd. *PYROMAXL® is a registered trademark and a trademark of Riken Corporation.

Series selection flowchart Start Capacitive load PWM (harmonic and flicker suppressible) Waveform control Phase, cycle Three-phase Phase number Single-phase Transformer primary control Rectifier primary control Load type Resistive load Single-phase PWMAPR-M Series Load types, Capacitive load Inductive load Transformer primary control Rectifier primary control Resistive load and other loads supported. Pure metal system Silicon carbide system Heater type 150 A or more Three-phase PWM-APR Series Y Alloy system and carbon system Feedback function required N Built-in fast-acting fuse required Three-phase...

Fuji AC Power Regulator [APR] Features, Applications, Series Configuration Features, applications, series configuration Series name Single-phase ・Test facility/laboratory facility, etc. PWMAPR-M high-precision constantvoltage power supplies ・Rectifier-combined high-precision DC power supplies Three-phase ・Locations with poor power supply conditions (Voltage PWM-APR fluctuation) stabilization power supplies ・Heater control ・Dimming of various lights ・Utilizes IGBT-equipped PWM control method to achieve sine wave output ・No need for harmonic suppression measures Single-phase ・Heater control APR-V...

Rated output current [A]

Fuji AC Power Regulator [APR] PWMAPR-M Series New release of PWMAPR-M as digitally controlled PWMAPR Expands the range of applications to include applications that were not possible with conventional power regulators Features Uses our proprietary PWM control method to eliminate the need for harmonic current countermeasures ● Saves energy because it does not deteriorate the load power factor ● Capable of being used as a test power supply thanks to its sine wave output ● Comes standard with VLR function (voltage limiting) effective for lamp loads, etc. ● Comes standard with setting indicator as...