OWON OEL15 / 30 / 60 Series
Compact bench DC loads that do the real work: 150, 300 or 600 V inputs at 150 or 300 W, with CC/CV/CR/CP modes, a 5 kHz dynamic mode, remote sensing and SCPI control. From €150.
Nine models, one small footprint
The OWON OEL15/30/60 series is a family of nine single-channel programmable DC electronic loads built for the bench rather than the rack. Every model shares the same slim 84 mm-wide chassis and 2.8-inch TFT display — you pick the input rating: 150 V (OEL15xx), 300 V (OEL30xx) or 600 V (OEL60xx) at 15, 20 or 30 A and 150 or 300 W.
All nine sink current in four static modes — CC, CV, CR and CP — and add a CC dynamic mode up to 5 kHz with a programmable rise/fall slope for transient testing. 1 mV / 0.1 mA readback, four-wire remote sensing, full protection (OVP, OCP, OPP, OTP and reverse polarity) and SCPI over USB Type-C, RS232 or RS485 make them equally at home in a teaching lab, a repair bench or an automated test setup.
Why the OEL15/30/60
Four static modes, fast dynamic testing, remote sensing and SCPI — in a load that takes up almost no bench space.
CC / CV / CR / CP
Four static operating modes with a 0.05 Ω–7.5 kΩ resistance range and 10 mW power-setting resolution — load a supply, a battery or a converter exactly the way its spec is written.
5 kHz dynamic mode
Switch between two programmed current levels with T1/T2 timing from 0.1 ms to 50 s and a rise/fall slope from 0.01 to 2000 A/ms (minimum rise time 20 µs) for load-transient testing.
Four-wire remote sensing
Vsense+ and Vsense− terminals compensate for the voltage drop in your test leads, so the load regulates on the voltage at the device under test — not at its own terminals.
SCPI over USB, RS232 & RS485
A front-panel USB Type-C port plus rear RS232/RS485 with the SCPI protocol and free Windows software — drop the load straight into an automated test sequence.
Who it’s for & best applications
A DC electronic load is the missing half of every power bench: it draws a precisely controlled current so you can characterise whatever supplies it.
- Education and training labs — small, protected and affordable
- Power-supply, adapter and charger repair & verification
- Battery and energy-storage discharge testing
- DC–DC converter and solar-panel characterisation
- Small production benches and QA sampling over SCPI
- Load-transient response with the 5 kHz dynamic mode
- Constant-power burn-in and endurance runs
- Cable-drop-free measurement using remote sensing
- High-voltage strings: the 600 V models suit PV and telecom rails
- Battery-discharge curves and OCP/OPP routines with the “T” version
Choose your model
Nine models, one platform. The first two digits are the voltage class — 15 = 150 V, 30 = 300 V, 60 = 600 V — and the last two are the current: 15, 20 or 30 A. The 15 A models are 150 W; the 20 and 30 A models are 300 W. Click any model to view its full details and buy.
OEL1515
OEL1520
OEL1530
OEL3015
OEL3020
OEL3030
OEL6015
OEL6020
OEL6030
OEL15150–150 V0–15 A150 W
0.8 V @ 15 A€150
OEL15200–150 V0–20 A300 W
0.9 V @ 20 A€175
OEL15300–150 V0–30 A300 W
1.1 V @ 30 A€190
OEL30150–300 V0–15 A150 W
0.8 V @ 15 A€185
OEL30200–300 V0–20 A300 W
0.9 V @ 20 A€200
OEL30300–300 V0–30 A300 W
1.1 V @ 30 A€315
OEL60150–600 V0–15 A150 W
0.8 V @ 15 A€260
OEL60200–600 V0–20 A300 W
0.9 V @ 20 A€290
OEL60300–600 V0–30 A300 W
1.1 V @ 30 A€330
Versions & options
The extra test functions are factory versions, not field upgrades — choose them with the order. Contact us and we’ll quote the version you need.
“T” version
Adds the battery-discharge test (capacity curves with cut-off conditions) plus automated OCP and OPP test routines. Works with the free OWON Battery Test System PC software.
“V” version
Adds the ripple-test function, for measuring the residual AC ripple on the DC rail your load is drawing from.
RS232 cable & remote-sense leads
The RS232 com cable connects a PC for SCPI remote control; the remote-compensation lead set brings the Vsense terminals out to the device under test.
Specifications
Shared across the OEL15/30/60 series; voltage, current and power ratings depend on the model — see the comparison above.
| Load & measurement | |
| Static modes | CC, CV, CR, CP |
| CV range / resolution | 0–150 / 300 / 600 V (model) · 1 mV |
| CV / CC accuracy | 0.05% + 0.05% FS |
| CC range / resolution | 0–15, 0–20 or 0–30 A (model) · 1 mA |
| CR range / accuracy | 0.05 Ω – 7.5 kΩ · 0.1% + 0.01% R |
| CP range / resolution | 150 or 300 W (model) · 10 mW · 0.1% + 0.1% FS |
| Dynamic mode (CC) | up to 5 kHz · T1 & T2 0.1 ms – 50 s |
| Rise/fall slope | 0.01 A/ms – 2000 A/ms · min. rise time 20 µs |
| Readback | V 1 mV · A 0.1 mA · W 10 mW |
| Readback accuracy | V & A 0.05% + 0.05% FS · W 0.1% + 0.1% FS |
| Remote sensing | Four-wire, via the front-panel Vsense+ / Vsense− terminals |
| Short-circuit simulation | CC > rated current · CV 0 V · CR 50 mΩ |
| General | |
| Protection | OPP (>10 ms), OVP and OCP (>0.1 ms), OTP at 85 °C, reverse polarity |
| Interfaces | USB Type-C · RS232 · RS485 · SCPI protocol |
| Optional test functions | Battery discharge, OCP and OPP tests (“T” version) · ripple test (“V” version) |
| Display | 2.8-inch TFT LCD |
| AC input | 100–240 V AC · 50/60 Hz |
| Cooling | Internal intelligent fan, forced air |
| Withstand voltage | 1.5 kV AC, 5 mA (input to ground) |
| Dimensions (W×H×D) | 84.3 × 151.2 × 282.9 mm |
| Weight | ≈ 2.5 kg |
Accuracy applies when the voltage and current input values are at least 10% of full scale. From the official OWON OEL15/30/60 datasheet (v1.0.1); subject to change, errors & omissions excepted.
In the box
Every OEL15/30/60 ships with a power cord, spare fuse and user manual. The RS232 com cable and remote-compensation leads are optional extras.
PC software and documentation are free downloads below. Box contents subject to final delivery.
Related ranges
Need more power, or the supply to go with the load?
Step up: OEL85 series
Half-rack 2U loads from 200 to 500 W at up to 40 A, with a 3.9-inch display and RS485 parallel operation to 4 kW.
View
DC power supplies
The other half of the bench: OWON linear and programmable switching supplies from compact single-channel units to 3 kW systems.
View
Probes & accessories
Current probes, differential probes and test leads for power-electronics measurements are in our accessories store.
ViewNot sure which model you need?
Tell us the voltage, current and power of what you need to test — we’ll point you at the right model and tell you whether the “T” or “V” version is worth it.
Downloads
Official OWON documentation and Windows PC software for the OEL15/30/60 series.
Files are hosted on the OWON server and open in a new tab. Also available: the full OEL15/30/60 factory product page.