OWON OWH9813 3 Phase 3–600V / 0–20A RMS power meter
The OWH9813 Digital Power Meter is a professional three-phase 3–600 V RMS / 0–20 A RMS power measurement instrument designed for accurate analysis of voltage, current, power, efficiency, and harmonics in industrial, laboratory, and R&D environments. With advanced digital signal processing, harmonic analysis up to the 63rd order, and full SCPI remote control support, the OWH9813 is ideal for both standalone measurements and automated test systems .
Dual-channel power measurement for three-phase equipment
The OWON OWH9813 is a dual-channel benchtop digital power meter for three-phase AC measurements. CH1, on the rear panel, accepts three-phase AC voltages from 3 to 600 V RMS and currents up to 20 A RMS, with a combined power range of up to 36 kW — suited to three-phase motors, variable-frequency drives and industrial power distribution. CH2, on the front panel, adds a second AC/DC measurement channel for 0–1000 V peak and 0–20 A, so secondary-side or reference signals can be monitored at the same time.
Measuring both channels simultaneously allows the OWH9813 to calculate conversion efficiency directly, without an additional instrument. Sixteen measurement parameters are shown at once — voltage, current, active power (W), apparent power (VA), reactive power (var), power factor, frequency, crest factors, peak values and total harmonic distortion. Harmonic analysis extends to the 63rd order with a 2.8 kHz bandwidth. Energy integration (Wh, Ah) supports efficiency and consumption testing over time. RS232 with SCPI and Modbus protocols enables remote monitoring and PC data logging in automated test environments.
Key capabilities
Everything the OWH9800 series brings to the test bench.
Dual-channel design
CH1 (rear) measures AC line power; CH2 (front) adds AC/DC. Both channels active simultaneously for input/output efficiency testing.
16 measurement parameters
V, A, W, VA, var, power factor, frequency, crest factors, peak values and THD — all displayed at once on the 3.95″ TFT.
63rd-order harmonics
Harmonic analysis up to the 63rd order with a 2.8 kHz bandwidth — for THD measurement and compliance pre-screening on non-linear loads.
RS232 · SCPI · Modbus
Standard RS232 interface with SCPI and Modbus protocol support for remote control and PC data logging at baud rates up to 115,200 bps.
Who it’s for & typical applications
- Electrical and mechanical engineers testing three-phase motors, VFDs and industrial machinery
- Power-electronics developers measuring three-phase inverter input vs output efficiency
- Industrial test benches requiring three-phase power quality and harmonics analysis
- Three-phase motors and variable-frequency drives (VFDs)
- Three-phase inverters and power converters
- Industrial power distribution and transformer testing
- Three-phase switch-mode power supplies and UPS
Front & rear panel
CH1 connections are on the rear panel; CH2 is on the front.
OWON OWH9813 — complete specifications
Warm-up >30 min required. CH1 = rear-panel; CH2 = front-panel.
What’s included
The OWH9811 and OWH9813 ship with the essentials to start measuring straight away.
Optional — not included
Your OWON partner in Europe
Genuine OWON instruments, shipped from within the EU with full support and warranty.
EU shipping
Genuine OWON instruments shipped from within the European Union.
Warranty & support
Full manufacturer warranty and technical support from our team.
CE & RoHS
Instruments that meet European safety and compliance standards.
Expert advice
Questions about specs or setup? Our team is here to help.
Questions about the OWON OWH9813?
Ask our team about compatibility, accessories or measurement setup — or browse the full OWH9800 range.
OWON OWH9813 documentation
Official OWON documentation for the OWH9813.