UTE310G 600V High-Performance Digital Power Meter with GPIB

Overview

The UNI-T UTE310 Series is a single-phase high-resolution digital power meter for precision power-conversion and energy-measurement work. It samples at 1 MSa/s across a DC to 300 kHz bandwidth and resolves current to 0.1 A and voltage to 1 mV fine enough to measure milliwatt standby draw and the switching content that an AC line meter averages away.

Four models share one measurement platform. The base UTE310 covers 75mV 600V / 5mA 20A from a 75 mW floor; the high-voltage UTE310H extends to 75mV 1000V / 10mA 50A for high-line and high-power work. Either is available with GPIB in place of RS-232 (G/HG) for instrument-bus automation. Sampling, resolution, bandwidth, harmonic analysis and the measurement firmware are identical across all four.

Choosing Your Model UTE310 Series

The UTE310 name spans four models on one platform. They differ only by voltage/current range and communication interface the 1 MSa/s sampling, 0.1 A current resolution, DC300 kHz bandwidth, 50th-order harmonic analysis and energy integration are identical. Compare the full series before selecting:

Choose the voltage class that covers your line (600 V base, 1000 V on the H models) and the interface your bench uses.

The UTE310 is the high-resolution single-phase instrument in the line. For three-phase or multi-rail measurement see the 3-channel UTE323 Series; for compact AC panel metering see the UTE9800+ Series distinct instrument lines for different measurement needs.

Key Features

• Single-phase true-power measurement V, A, W, VA, PF, Hz and energy
• 0.1 A current resolution, 1 mV voltage resolution measures down to a 75 mW power floor
• 1 MSa/s sampling resolves fast switching-load transients
• DC to 300 kHz measurement bandwidth
• Harmonic analysis to the 50th order
• Energy integration (Wh / Ah) with selectable refresh from 0.1 s
• 600 V base range; 1000 V / 50 A on UTE310H / UTE310HG
• D/A analog output for chart-recorder and DAQ integration
• 4.3-inch TFT-LCD V, A, W and PF shown together
• USB + LAN + Digital I/O standard; GPIB in place of RS-232 on G / HG

UNI-T UTE310 Series Details

UTE310 measurement screen V, A, W, PF and frequency shown together

0.1 A / 1 mV Resolution Measures What Panel Meters Miss

Current resolves to 0.1 A and voltage to 1 mV, with a power floor of 75 mW. That is fine enough to characterize milliwatt-class standby and sleep-mode draw, leakage current and low-load efficiency measurements a compact AC panel meter, resolving in tens of microamps and watts, cannot make.

UTE310 measurement screen V, A, W, PF and frequency shown together

1 MSa/s Sampling & DC300 kHz Bandwidth

Switching converters and motor drives put energy well above the line fundamental. The UTE310 samples at 1 MSa/s across a DC to 300 kHz bandwidth, so PWM ripple, switching harmonics and fast load steps are captured in the power calculation rather than averaged away.

1 MSa/s sampling captures fast load transients1 MSa/s sampling captures fast load transientsHarmonic analysis to the 50th order

Harmonic Analysis to the 50th Order

Per-order harmonic measurement to the 50th order quantifies distortion on the input current of rectifier and PFC front ends the data needed for power-quality and standby-compliance assessment.

Harmonic analysis to the 50th order

Energy Integration

Watt-hour and amp-hour integration accumulate consumption over a test window for efficiency runs, standby-energy measurement and long-duration profiling, with the result held on screen.

Integration (Wh / Ah) accumulation over timeIntegration (Wh / Ah) accumulation over timeLive voltage and current waveform display

Waveform Display

Live voltage and current waveforms confirm what the meter is measuring useful for spotting clipping, asymmetry or a miswired CT before trusting the numbers.

Live voltage and current waveform display

D/A Output & External Scaling

A D/A analog output drives a chart recorder or DAQ for trend logging, and external CT/PT scaling extends the current and voltage range for high-power lines without changing the instrument.

D/A analog output for chart-recorder / DAQ integrationD/A analog output for chart-recorder / DAQ integrationAveraging modes for stable readings on noisy loads

Averaging for Stable Readings on Noisy Loads

Selectable averaging steadies the reading on switching loads whose instantaneous power swings cycle-to-cycle, so efficiency and PF figures settle to a number you can record rather than chase.

Averaging modes for stable readings on noisy loads

GPIB in Place of RS-232 UTE310G / UTE310HG

The G and HG models substitute a GPIB (IEEE-488) port for the RS-232 port they do not add GPIB alongside it. If your ATE rack is built on a GPIB instrument bus, the G/HG models drop in directly; if you automate over LAN or USB (standard on every model), the base UTE310 / UTE310H already covers you and the G/HG variant is unnecessary. USB, LAN and Digital I/O are present on all four models regardless.

Voltage Class UTE310 / G (600 V) and UTE310H / HG (1000 V)

The base UTE310 / UTE310G measure to 75mV 600V and 5mA 20A. The UTE310H / UTE310HG extend to 75mV 1000V and 10mA 50A for high-line, high-power and three-phase-leg measurement. The measurement engine is identical the H models change the input range and front end, nothing else.

Applications

Switching-Supply & Converter Efficiency

Measure input and output true power on SMPS, DC/DC and PFC stages to calculate efficiency directly. The 1 MSa/s / 300 kHz front end keeps switching content in the measurement instead of averaging it out.

Motor-Drive & Inverter Input Power

The 1000 V / 50 A range on the UTE310H covers VFD and inverter input measurement; harmonic analysis quantifies the distortion a non-linear front end pushes back onto the line.

Automated Characterization

USB and LAN are standard on every model for LabVIEW / Python-VISA sweeps over load and line; the G/HG models add GPIB for GPIB-based instrument-bus racks. Digital I/O supports pass/fail hand-off in end-of-line test.

Accessories and Family Options

UTE-series test cables and the UTE-M01-US North-American test fixture support safe connection to standard plug loads. Pair the UTE310 with a UNI-T programmable DC source or electronic load for a complete efficiency-characterization bench.

Frequently Asked Questions

What is the difference between UTE310 and UTE310H?

Range. The UTE310 measures to 75mV 600V / 5mA 20A; the UTE310H extends to 75mV 1000V / 10mA 50A. The measurement engine, accuracy, sampling and firmware are identical.

Do the G and HG models add GPIB on top of RS-232?

No they substitute GPIB for the RS-232 port. USB, LAN and Digital I/O are present on every model. If you automate over LAN or USB you do not need the G/HG variant.

Can it measure DC as well as AC power?

Yes. The measurement bandwidth is specified from DC, so DC, AC and mixed-mode power are all measured.

Does it measure harmonics?

Yes per-order harmonic analysis to the 50th order, for power-quality and compliance work.

Specifications

Documentation

• UTE310G Datasheet, User Manual, and Software/Firmware Downloads

Options & Accessories

Included in box:

• Power cord
• Safety leads
• Y-Terminal
• Alligator clips
• English download guide
• multi-language safety manual
• calibration report (COC)