PHU Series

The GW Instek PHU Series is an autoranging (multi-range) high power DC power supply that delivers up to 15 kW from a single 3U rack. Built on SiC (silicon carbide) power devices for high power density, the series spans 18 models: three power levels (5 kW / 10 kW / 15 kW) across six rated voltages (80, 200, 500, 750, 1000 and 1500 V), with a maximum output current of 510 A on the PHU 80-510. The multi-range output gives each unit a wide envelope of voltage and current combinations within its power rating, so one PHU can cover test cases that would otherwise need several fixed-range supplies.

PHU is built for high-power test floors: photovoltaic systems, electric vehicles (EVs) and automotive electronics. It combines C.V/C.C priority operation, adjustable voltage and current rise/fall times, internal-resistance and bleeder-control functions, three presets and a standard built-in programmable sequence function with an AWS (Advanced Web Server) for browser-based control, no driver install required, and optional functions such as Solar Array Simulator, Battery Simulation, Datalogger and MPPT and AH/WH Meter metering.

A 15 kW DC power supply: high power density in 3U

The PHU’s SiC (silicon carbide) circuit design generates up to 15 kW of output while staying at just 3U height in a standard 19-inch rack, high power density that frees up valuable rack and floor space on a busy test bay. For larger systems, up to 10 units operate in parallel for as much as 150 kW, with APC (Adaptive Parallel Connection) so a master coordinates the array as a single source. A front-panel display, numeric keypad and rotary knob handle local control, while the standard isolated analog interface and digital buses handle automated test integration. With six rated voltages up to 1500 V, the same series scales from a compact 5 kW bench source to a multi-cabinet 15 kW DC power supply array.

A programmable DC power supply with C.V/C.C priority and full protection

As a programmable DC power supply, the PHU programs and reads back voltage, current and power, with C.V/C.C priority so you choose whether the output favours constant-voltage or constant-current behaviour at the crossover point. Adjustable voltage and current rise and fall times (slew control), an internal-resistance function that lets the source emulate cabling or source impedance, and a bleeder-control function tailor the output to the device under test. A standard built-in programmable sequence function automates multi-step profiles. The protection suite, as published by GW Instek, is OVP (over-voltage), OCP (over-current), OHP (over-temperature), UVL (under-voltage limit), AC Fail and FAN Fail: guarding both the supply and the DUT during long unattended runs. Detailed setting accuracy, regulation and ripple figures vary by model; GSAS provides the model-specific GW Instek datasheet on request.

An autoranging (multi-range) DC power supply built on SiC

The autoranging output is what sets the PHU apart from fixed-rating supplies. Within each model’s rated power, an autoranging (multi-range) DC power supply automatically trades voltage for current, so a single PHU spans a wide test envelope rather than a single voltage/current point. The SiC power stage achieves the high power density that lets a 15 kW output fit in 3U, while Flexible Parallel operation can combine different-capacity models, for example a 15 kW unit and a 10 kW unit to reach 25 kW, for cost-efficient scaling that matches your exact power target.

PHU Series specifications

Specifications are sourced from the official GW Instek PHU product page and are subject to change by the manufacturer without notice. Model-specific setting accuracy, regulation, ripple, dimensions and weight are detailed in the GW Instek datasheet, GSAS supplies the datasheet for your selected model on request.

PHU model lineup: 18 models

GSAS helps you select the PHU model whose voltage, current and power match your test envelope, and combines units in parallel when you need more than 15 kW. Pair the PHU with a GW Instek PEL-5000G electronic load for full source-and-sink characterisation, or step up to the regenerative ASR-6500 when you need bidirectional grid and PV emulation.

Watch the PHU Series product introduction

Applications

The PHU Series’ wide voltage/current range, high power density and protection suite make it well suited to:

• Photovoltaic (solar) systems: inverter, optimizer and string test using the optional Solar Array Simulator function, where a high voltage DC power supply up to 1500 V matches modern PV string voltages.
• Electric vehicle and battery test: DC bus, charger, on-board converter and pack emulation, including the optional Battery Simulation function. See GSAS EV & energy systems solutions.
• Automotive electronics: high-current low-voltage rails and HV rails, with C.V/C.C priority for realistic source behaviour. See GSAS automotive test solutions.
• Power conversion and inverter R&D: internal-resistance and rise/fall-time control to emulate cabling and source impedance.
• Energy storage and grid-tied equipment: parallel operation to 150 kW, with Flexible Parallel to match exact power targets, for large DC loads.
• High-power production and ATE: isolated analog and industrial fieldbus interfaces, AWS web control, programmable sequence and presets for automated lines.

The PHU Series supports engineering and manufacturing teams across renewable energy, e-mobility and EV, automotive electronics and power electronics where high-power, automatable DC sourcing matters.

PHU Series price in India: buy from GSAS Micro Systems

GSAS Micro Systems is the authorized GW Instek engineering partner in India. We supply the full PHU Series high power DC power supply range, all 18 models across 5 kW, 10 kW and 15 kW and every rated voltage from 80 V to 1500 V, with model-selection guidance, interface and optional-function recommendations, rack and integration support, hands-on demonstrations, GST-compliant quotations and calibration with maintained traceability. Whether you need a compact 5 kW programmable DC power supply or a 15 kW DC power supply scalable to 150 kW, engineering, R&D and production teams across Bengaluru, Hyderabad, Chennai, Pune, Mumbai and Delhi NCR rely on GSAS for fast access and local support. Contact GSAS or request a quote to get the PHU Series price in India and order with delivery nationwide.