HPA Programmable AC Power Source Specifications And Data

Name: HPA Programmable AC Power Source
Brand: Nepson Industrial

Product Overview

What This Unit Does

The HPA series is a variable frequency AC power source that reproduces the voltage and frequency used in any country on a single bench. It delivers maximum rated power at any output voltage up to 300 VAC, 520 VAC per phase, and at any frequency between 40 Hz and 499.9 Hz. Engineers use it for R&D design characterisation, production testing and QA verification.

Key Benefits

One supply covers 110 V 60 Hz, 230 V 50 Hz and 400 Hz test conditions
Pure and stable sine wave output keeps test results repeatable
Galvanic isolation removes harmonic distortion from the measurement
PWM technology and IGBT modules keep the cabinet compact, quiet and efficient
Sustained 300 percent overload capability absorbs inrush from motors and transformers

Problems It Solves

The local grid cannot produce the voltage or frequency the destination market uses
Utility distortion makes production test measurements drift between shifts
Separate fixed frequency supplies are needed for each export market

Application Scenarios

Verifying an export product on the destination grid before shipment
Supplying 400 Hz to avionics, marine and military equipment on the bench
Characterising a power supply design across its full input voltage window
Production line burn in and QA sign off

Who It Is For

R&D and design laboratories
Production test and QA engineers
Avionics and marine equipment makers
Certification and compliance labs

Technical Features

How It Is Built

Input frequency 50 Hz, 60 Hz or 400 Hz
Output voltage selectable from 0 to 300 VAC
Output frequency range 40 Hz to 499.9 Hz
Programmable key lock setting for output frequency
Easy to read LED display of output voltage, frequency, ampere, wattage and power factor
Self test at power on
Galvanically isolated with no harmonic distortion, EMI and EMC controlled
IGBT module for high efficiency, low noise and maximum reliability
Electronic circuit, instant trip breaker and alarm for overload, over temperature, instant cut off and short circuit protection
Rated for resistive, capacitive, inductive and non linear loads

Specifications

Published Data

Every figure below comes from the manufacturer data for this model family.

Series	HPA variable frequency converter
Input Frequency	50 Hz, 60 Hz or 400 Hz
Output Voltage	0 to 300 VAC selectable, up to 520 VAC per phase at rated power
Output Frequency	40 Hz to 499.9 Hz
Waveform	Pure and stable sine wave
Overload Capability	300 percent sustained
Switching Technology	PWM with IGBT modules
Isolation	Galvanically isolated
Display	LED, voltage frequency ampere wattage and power factor
Protection	Overload, over temperature, instant cut off, short circuit
Load Types	Resistive, capacitive, inductive, non linear

Manufacturing Process

From Cabinet To Tested Unit

Cabinet fabrication

IGBT power stage assembly

Control board and display integration

Full load burn in and calibration

Quality Control

Self test routine runs at every power on
Output waveform and regulation verified before shipment
Protection trips exercised on the test bench

Certifications

CE
RoHS

Customisation Options

Output voltage and frequency preset to your test standard
Single phase or three phase output configuration
Commercial 47 to 63 Hz build or 400 Hz build for avionics and marine work

Comparison

Against The Alternatives

Fixed frequency isolation transformer	A transformer changes voltage only. The HPA changes voltage and frequency, so one unit replaces a shelf of market specific supplies.
Rotary motor generator set	A rotary set has wearing parts, needs regular service and is loud. The HPA is solid state, quieter and holds frequency electronically.

Use Guide

Getting It Right On Site

Select the high or low output voltage range before connecting the load
Set output frequency with the frequency setting switch, then lock it with the programmable key lock
Confirm voltage, ampere and wattage on the LED display under load
Let the instant trip breaker reset before restarting after an overload trip

FAQ

Questions Buyers Ask

What is the highest output frequency?

499.9 Hz. The range starts at 40 Hz, so 50 Hz, 60 Hz and 400 Hz test conditions are all covered by one unit.

Can it drive a motor or a transformer load?

Yes. The unit is rated for resistive, capacitive, inductive and non linear loads, and it sustains 300 percent overload for inrush.

Is the output isolated from the input?

Yes. The output is galvanically isolated, which is why the unit introduces no harmonic distortion into the measurement.

What happens on a short circuit?

The electronic circuit and instant trip breaker cut the output and raise an alarm. Press the OFF and RESET switch to restart.

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