ACS Series High Power Programmable AC Current Source Single Phase and Three Phase

ACS Series High Power Programmable AC Current Source Single Phase and Three Phase

  • High power programmable ac current source
  • Adopt double closed loop feedback control, good output stability
  • Single phase or three phase output selectable
  • Power capacity from 500VA to 800kVA
  • Current range from 20A to 15000A
  • Open circuit voltage 3V 5V 10V 20V 30V 60V 100V or at request
  • Rated frequency 50Hz/60Hz, adjustable range 40~70Hz, or at request up to 1500Hz
  • Display for voltage, current, frequency, active power, power factor
  • Temperature-controlled cooling fan
  • RS-232 or RS-485 interface, support ModBus-RTU
  • Optional function: 0-5V or 0-10V analog control, LIST mode function, STEP mode function
  • Customized specifications and functions acceptable

ACS series is a high power programmable AC current source for continuous operation, power capacity ranging from 500VA to 800kVA. Adopting PWM high frequency technology & IGBT regulation mode, the ACS series AC current source features fast response, high constant current, high accuracy and good stability.

Generally, the high power programmable AC current source is supplied as per customer request case by case. Output current is selectable from 50A to 15000A (15kA). The output frequency defaults at 40Hz to 70Hz variable, selectable up to 1500Hz. Open voltage is normally 5V or 10V, selectable at other points 15V 20V 30V 60V 100V. Both single phase AC current source and three phase AC current source can be supplied from the ACS series.

Remote control via RS232 is provided by default, supporting ASCII or ModBus-RTU commands. It can be changed to RS485 interface. There is option of 0-5V or 0-10V analog control. Option of more advanced remote control is available with LIST Mode function and STEP Mode function.

The ACS series high power programmable AC current source is widely used in many AC current test applications:

  • Trip-off tests and thermal tests of circuit breakers, switches, relays and fuses
  • Thermal and magnetic tests of electrical components
  • Validation of contactors, coils and transformers
  • Calibration and analysis of instruments and sensitive electronics
  • Quality control and compliance verification in production

Product Parameters

ACS Series High Power Programmable AC Current Source Single Phase and Three Phase

Model (4V)OutputInput Model (10V)OutputInput Model (20V)OutputInput
ACS5V-50A5V 50A1 phase 220VACS10V-50A10V 50A1 phase 220VACS20V-50A20V 50A1 phase 220V
ACS5V-100A5V 100A1 phase 220VACS10V-100A10V 100A1 phase 220VACS20V-100A20V 100A1 phase 220V
ACS5V-200A5V 200A1 phase 220VACS10V-200A10V 200A1 phase 220VACS20V-200A20V 200A1 phase 220V
ACS5V-300A5V 300A1 phase 220VACS10V-300A10V 300A1 phase 220VACS20V-500A20V 500A1 phase 220V
ACS5V-500A5V 500A1 phase 220VACS10V-500A10V 500A1 phase 220VACS20V-1000A20V 1000A3 phase 380V
ACS5V-600A5V 600A1 phase 220VACS10V-600A10V 600A3 phase 380VACS20V-1500A20V 1500A3 phase 380V
ACS5V-1000A5V 1000A1 phase 220VACS10V-800A10V 800A1 phase 220VACS20V-2000A20V 2000A3 phase 380V
ACS5V-1500A5V 1500A1 phase 220VACS10V-1000A10V 1000A1 phase 220VACS20V-3000A20V 3000A3 phase 380V
ACS5V-2000A5V 2000A1 phase 220VACS10V-1500A10V 1500A1 phase 220VACS20V-4000A20V 4000A3 phase 380V
ACS5V-2500A5V 2500A1 phase 220VACS10V-2000A10V 2000A3 phase 380VACS20V-5000A20V 5000A3 phase 380V
ACS5V-3000A5V 3000A1 phase 220VACS10V-3000A10V 3000A3 phase 380V
ACS5V-5000A5V 5000A3 phase 380VACS10V-4000A10V 4000A3 phase 380V
ACS10V-5000A10V 5000A3 phase 380V

For the purpose of product improvement, specifications are subject to change without prior notice.

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  • Experience excellence with our dedicated support and customer-focused approach.

Frequently Asked Questions

A DC power supply is to supply voltage and current in constant voltage (CV) or constant current (CC) mode within the rated output range. Such working characteristics is called a constant voltage/constant current automatic cross-over type. This permits continuous transition from constant current to constant voltage modes in response to the load change. The intersection of constant voltage and constant current modes is called the crossover point. Below figure shows the relationship between this crossover point and the load.

In CV mode, a regulated output voltage is provided. The output voltage remains constant as the load increases while the output current changes in response to the load changes, up till the present current limit point is reached. At that point, the output current becomes constant and the output voltage drops in proportion to the further increases in load.

Similarly, in CC mode, crossover from the CC to CV mode automatically occurs from a decrease in the load. A regulated output current is provided. The output current remains constant as the load decreases while the output voltage changes in response to the load changes.

A power supply with CV and CC operation mode can be operated in only one mode according to load situation. The power supply is in CV mode when the actual load is over the preset load capacity; and the power supply is in CC mode when the actual load is below the preset load capacity.

When the power supply is connected to a big capacitive load, it always causes increase to the output voltage in a power supply. The output voltage may make fast increase to the Over Voltage Protection point. It may also cause slow decrease when the output voltage is turned down.

To solve this problem, connect a power resistor in parallel to the output terminals of the power supply; at the same time, connect a diode in serial between output terminals and the load.

When an inductive load is connected to the power supply, it will cause a reverse polarity induction electric motive force when the power supply is turned on or off, or when preset the output voltage. The pulse noise caused by an inductive load will also affect the power supply, especially when the pulse noise has the same polarity with the output of power supply.

To avoid effect or damage to the power supply, connect a diode in serial between the output terminals of power supply and the load; at the same time, connect a power resistor and a capacitor in parallel to the load to make a R-C snubbed circuit, which will significantly restraint generation of the noise.

When use the power supply to charge a battery, such as accumulator and ni-mh battery, the recommended protection measures is to connect a diode between the power supply and the battery. When the output electrolytic capacitor of the power supply is charged, connecting a load (battery) may cause sparks. This is normal. After the two of them get to equal voltage, the sparks will disappear.

Even if the peak current of a pulse load, such as motor, bulb, DC-DC or DC-AC converter module, does not exceed the rated current of the power supply, it will also cause voltage drop or instability to the output.

A basic solution is to connect a inductor in serial between the power supply and the load. Or, choose a power supply with higher rated current.

If the pulse circuit has a small pulse width or low peak current, another solution is to connect a capacitor with large capacity. A reference to choose capacity of a capacity is: 1000uF capacity to a 1A current.

When the power supply is connected to a load that will cause reverse polarity current to the power supply output, the output voltage will increase, because the power supply cannot absorb the reverse polarity current from the load.

A solution is to connect a diode in serial between the output terminal and the load; at the same time, connect a discharge resistor in parallel to the load to absorb the reverse polarity current. When the reverse polarity current is a peak surge, connect the large electrolytic capacitor in parallel to the two ends of the load.

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