SP 300 Series

Single Phase Programmable AC Power Source 2.8A – 48A / 150VAC – 300VAC / 600W – 5kW

SP Series is a switching mode single-channel output high-precision programmable AC power source, which adopts high-speed DSP+CPLD control, high-frequency PWM power technology and active PFC design to supply AC/DC stable output. It is featured with high power density, high reliability and high precision, meanwhile, it possesses operation interface of touch screen and keys manually. It is able to analogue output normal or abnormal input for electrical device to meet test requirements. Meet the verification of power electronics, motors, lighting, avionics, automotive electronics research and development quality assurance laboratory, as well as the production test verification of factory production line.

Main Features

  • Large colour touch screen with an intuitive interface, easy to operate
  • Features AC, DC, AC+DC output modes, AC+DC output mode for voltage DC offset simulation
  • Turn on, turn off phase angle control, 0-359.9°
  • Output frequency: 15-1200Hz, programmable slew rate setting for changing voltage and frequency
  • High output current crest factor which is ideal for inrush current testing
  • Built-in power meter function, can real-time measure 15 electrical parameters such as RMS voltage, current, power, apparent power and etc. This series AC source can measure up to 40 orders of the voltage or current harmonics. Support LIST/PULSE/STEP modes to simulate all kinds of power line disturbance conditions
  • Triac Dimmer function for dimming/governor simulation function
  • Sweep function for efficiency testing and shows voltage and frequency value at max power
  • Multiple current ranges to make current measurement more accurate
  • Front-panel USB interface supports CSV format to import the waveform
  • OCP/OVP/OPP/OTP/reverse current protection/short circuit protection
  • Programmable voltage and current limit, support CC mode
  • Support up to 2 units in series, 4 units in parallel
  • Support three-phase power output can simulate the three-phase unbalanced output
  • Support external analogue input control and TTL electrical level output
  • Two versions to meet the cost performance and different applications

Built-in IEC Standard Test Waveforms (Professional Version)

  • IEC 61000-4-11,  testing and measurement techniques-Voltage dips, short interruptions and voltage variations immunity tests (AC,<16A)
  • IEC 61000-4-13, testing and measurement techniques-Harmonics and inter-harmonics including mains signaling at AC power port, low-frequency immunity tests
  • IEC 61000-4-14, testing and measurement techniques-Voltage fluctuation immunity test
  • IEC 61000-4-28, testing and measurement techniques-Variation of power frequency, immunity test for equipment with input current not exceeding 16 A per phase

Series Table

ModelVoltageCurrentPowerStandard Communication InterfaceFrequency RangeSize

Functions & Advantages

Graphical User

The large colour touch screen provides simple and fast operation for customers, real-time update of display output data and power status, and graphical display makes it more intuitive.

Graphical User Interface AC Programmable Power Supply

Settable ON/OFF Phase angle of Output Waveform

This series of AC power supply can set the ON phase and OFF phase of sinusoidal output waveform, suitable for the output test of switching power supply. Set the ON angle to 90 degrees for surge current testing, the power supply will show the measured value of surge current. Users can set when start to measure the surge current and the duration of the measurement.

Settable ON/OFF Phase angle of Output Waveform laboratory power supply

Slew Rate Setting For Voltage and Frequency

This series AC power supply let users set the slew rate of voltage and frequency, in such application in order to reduce the inrush current during motor or compressor startup.

slew rate setting for voltage and frequency AC Benchtop Power Source

High Output Crest Factor

This series AC power supply deliver up to 5~6 times of peak current from its RMS current, so it is suitable for testing switching power supplies and motor with high inrush current issue.
high output crest factor variable power supply

Power Sweep Function

This series AC power supply can test the efficiency of switching power supply and capturing the voltage, current, power and frequency at the maximum power operating point, the measurements will be displayed at the end of the sweep.

power sweep function variable ac power supply

Triac Dimmer Function

Triac Dimmer Function Power Supply

Power Line Disturbance Simulation

List Mode

Power line disturbance list mode

Step Mode

Power line disturbance step mode

Pulse Mode

Power Quality line disturbance simulation pulse mode

Voltage Sag/Voltage Spikes

Power line disturbance simulation voltage sags voltage spikes Laboratory Testing Simulation

Test Mode

The test mode compares measurement values against a user-defined set of measurement limits and shows a PASS or FAIL result in one or more measurement are out of range. The user can set when start of the measurement and duration of the test.

File Save and Recall Via the USB Interface

The user can save the screenshot via the USB interface in the front panel. The user can import a CSV file via the USB interface to generate waveform output.

file save ac programmable ac power source

Parallel/Series/3-Phase Mode

This series AC power source can be used in parallel or series to provide more power, the maximum current up to 184A and the voltage up to 600V. In 3-phase mode, the Master unit is always phase A, Slave 1 is always phase B and Slave 2 is always phase C.  The phase difference between phase A and B is always 120°and between phase A and C is always 240°. The output voltage of phase B and C will be set to the same setting as that for phase A (Master) if the Voltage Mode is set to COM. Or if the Voltage Mode is set to Multi, phase B and C output voltage can be set individually to simulate 3-phase unbalance system. The output of 3-Phase system can be connected for three-phase, four wire (Delta configuration) loads or for three-phase, five wire (Wye configuration) according to the application requirement.

ParallelSeries3 Phase Mode Variable AC Power Supply

External Control Function

By selecting Analog I/O card to achieve below function:
Amplifier Mode
In Amplfier mode, the power source acts as a power amplfier, taking a low-level analog signal and amplifying it by a fixed amount of gain
amplifier mode ac power source

Professional Version

Programmable Output Impedance Function

The low output impedance and low voltage harmonics of this series power supply make it ideal for IEC61000-3-2 standard testing. A current feedback control circuit makes the output voltage changed with load. This feature is suitable for IEC61000-3-3 Flicker tests. The user can set the resistance and inductance value according to the test requirement.
Programmable output impedance test requirements IEC 6100-3-2-3

Harmonic/inter-harmonic Generation Simulation and Measurement Function

Support creating waveforms made up of a series of harmonics frequencies, amplitudes and phase shifts, up to 40 orders harmonics of 50Hz or 60Hz.  The harmonics measurement function measures total harmonic distortion (THD), DC voltage and current and fundamental voltage and current for output settings of 50Hz or 60Hz.The measurement of 2~40 orders can be displayed in absolute values or in percent of the fundamental, the harmonics measurement will be displayed with a graphical representation.

harmonic simulation and measurement function

Difference between Advanced Version and Professional Version

Function descriptionAdvanced VersionProfessional Version
Output Frequency Range15-1000Hz15-1200Hz
Built-in IEC standardsIEC 61000-4-11IEC 61000-4-11; IEC 61000-4-13; IEC 61000-4-14, IEC 61000-4-28
Programmable IEC StandardsNot SupportedSupport, meet IEC 61000-3-2/ IEC 61000-3-3 output impedance test requirements
Harmonic/inter-harmonic generation
simulation and measurement function
Not SupportedSupport, the harmonic components can be up to 40 orders
Remote I/O & Parallel
Multiphase Link Card
Optional featureOptional feature
GPIB communications interfaceOptional featureOptional feature

Ask for Assistance

Selecting the right power supply for your application is not a small task. Let our technical sales engineers guide you through the process of choosing the right solution for your needs.

Below some parameters usually required to size and select the right power supply:

  • Power & control requirements
  • Output & Input Voltage / Multioutput Voltage / Variable Voltage
  • Redundancy level
  • Mounting
  • Inrush Current
  • Environmental specifications (Temperature, altitude, vibration, shock)
  • Specific Industries Standards (Railway, Military, Medical)
  • Terminals

Contact Our Team

Contact our team of experienced engineers to discuss your unique power conversion and backup needs. We offer a wide range of highly reliable components that can be integrated and customized to create a solution that meets or exceeds your requirements.

For power automation systems please contact us at power.systems.automation@heliosps.com.au

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