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 .
OWH9813 Digital Power Meter – High-Precision Three-Phase Power Analysis
The OWH9813 Digital Power Meter is a professional three-phase power analysis instrument designed for accurate electrical measurements in industrial, laboratory, and R&D applications. It provides precise True RMS measurement of AC voltage, current, frequency, active power (W), apparent power (VA), reactive power (var), power factor, and phase angle across multi-phase systems, ensuring reliable results even with non-sinusoidal waveforms.
The instrument supports harmonic analysis up to the 63rd order, including individual voltage and current harmonic RMS values as well as total harmonic distortion (THD). This makes the OWH9813 well suited for power quality evaluation and testing of three-phase switched-mode power supplies, inverters, motor drives, UPS systems, and other nonlinear loads.
Integrated efficiency measurement functions allow direct evaluation of energy conversion performance in three-phase power systems. Selectable voltage and current ranges provide optimal resolution across a wide operating range, while adjustable update rates down to 0.1 s enable real-time monitoring of dynamic load conditions.
With full SCPI and IEEE-488.2 compatibility, the OWH9813 can be easily integrated into automated test systems (ATE) and production test environments. Combined with programmable alarm limits and multiple display modes, it offers a reliable and flexible solution for precision three-phase power measurement and analysis.
Why Choose the OWH9813?
The OWH9813 combines accurate three-phase power measurement, advanced harmonic analysis, and automation-ready connectivity in a cost-effective instrument. It is an excellent choice for engineers and test engineers who require reliable, repeatable three-phase power data without the complexity or cost of high-end power analyzers.
Key Features & Benefits
- High-accuracy three-phase power measurement
Measures three-phase voltage and current, as well as active power (W), apparent power (VA), reactive power (var), power factor, frequency, and phase angle, delivering excellent stability and repeatability across balanced and unbalanced loads.
- Harmonic & THD analysis
Built-in harmonic analysis up to the 63rd order for voltage and current, including THD, individual harmonic RMS values, and distortion factors. Ideal for detailed power quality analysis, compliance testing, and evaluation of nonlinear three-phase loads.
- Efficiency measurement support
Supports configurable efficiency calculations, enabling direct evaluation of energy conversion performance in three-phase power supplies, inverters, motor drives, UPS systems, and energy-conversion equipment.
- Wide measurement ranges
Multiple selectable voltage and current ranges allow accurate measurements from low-power standby conditions to high-power three-phase operation, without compromising resolution or accuracy.
- Fast update rate
Adjustable measurement update rates down to 0.1 s enable real-time monitoring of dynamic load behavior and transient operating conditions.
- Alarm & limit functions
Programmable upper and lower limits for voltage, current, and power, with adjustable delay settings—ideal for automated pass/fail testing, system protection, and long-term monitoring.
- SCPI & IEEE-488.2 compatible
Full SCPI command support and IEEE-488.2 compliance allow seamless integration into automated test systems (ATE), production test benches, and industrial control environments, improving test efficiency and repeatability.
Typical Applications
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Three-phase power supply and converter testing
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Inverter, UPS, and motor drive evaluation
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Energy efficiency and standby power measurements
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Power quality and harmonic analysis
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Production line testing and automated test systems (ATE)
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R&D laboratories and educational institutions
| Specification | OWH9811 | OWH9830 | ||
|---|---|---|---|---|
| CH1 | CH2 | CH1 | CH2 | |
| Model | OWH9811 | OWH9830 | ||
| Display | 3.95-inch TFT Screen | |||
| Update rate | 0.1s, 0.2s, 0.5s, 1s, 2s, 5s | |||
| Measurement items | V, A, W, VA, var, λ, fU, CfU, CfI, Upk, Ipk, THD | |||
| Measurement method | CH1: 1ph-AC | CH2: 1ph-AC+DC | CH1: 3ph-AC | CH2: 1ph-AC+DC |
| Voltage measurement range | 3.0V–600Vrms | 0V–1000Vpk*1 | 3.0V–600Vrms | 0V–1000Vpk*1 |
| Voltage range |
CF=3: 75V/150V/300V/600V CF=6: 37.5V/75V/150V/300V |
50V/100V/500V/1000V |
CF=3: 75V/150V/300V/600V CF=6: 37.5V/75V/150V/300V |
50V/100V/500V/1000V |
| Voltage accuracy | ±(0.4% of reading + 0.1% of range + 1 digit) | |||
| Voltage resolution | 0.01V / 0.1V | |||
| Current measurement range | 0–20.0Arms | 0–20Apk*1 | 0–20.0Arms | 0–20Apk*1 |
| Current range |
CF=3: 0.2A/1A/4A/20A CF=6: 0.1A/0.5A/2A/10A |
0.2A/1A/4A/20A |
CF=3: 0.2A/1A/4A/20A CF=6: 0.1A/0.5A/2A/10A |
0.2A/1A/4A/20A |
| Current accuracy | ±(0.4% of reading + 0.1% of range + 1 digit) | |||
| Current resolution | 0.001A | |||
| Range switching | Auto / Manual | |||
| Power range | 0–12kW | 0–20kW | 0–36kW | 0–20kW |
| Power accuracy | ±(0.4% of reading + 0.1% of range + 1 digit) | |||
| Power resolution | 0.01W / 0.1W / 1W | |||
| Power factor range | -1.000 ~ 1.000 | |||
| Power factor accuracy | ±(0.4% of reading + 0.1% of range + 1 digit) | ---- | ±(0.4% of reading + 0.1% of range + 1 digit) | ---- |
| Operating frequency | 40Hz–70Hz | DC + 40Hz–70Hz | 40Hz–70Hz | DC + 40Hz–70Hz |
| Frequency accuracy | ±(0.1% of reading + 1 digit) | ---- | ±(0.1% of reading + 1 digit) | ---- |
| Harmonic analysis | 2.8 kHz bandwidth, up to 63rd order | ---- | 2.8 kHz bandwidth, up to 63rd order | ---- |
| Integration function | Watt-hour (Wh), Ampere-hour (Ah) | |||
| Warm-up time | >30 min | |||
| Peak current | 60A | 30A | 60A | 30A |
| Maximum continuous input | Vrms=700V; Irms=24A | Vpk=1100V; Ipk=24A | Vrms=700V; Irms=24A | Vpk=1100V; Ipk=24A |
| Interface | RS232 | |||
| Communication protocol | Standard SCPI, Modbus protocol | |||
| Baud rate (bps) | 4800, 9600 (default), 19200, 38400, 57600, 115200 | |||
| Display hold | YES | |||
| Mute | YES | |||
| Key lock | YES | |||
| Power supply | AC 100V–240V, 50/60Hz | |||
| Operation environment |
18 °C ~ 28 °C, 30% ~ 75% RH (When operating temp. is outside 18 °C ~ 28 °C, add temp. coefficient: 0.05% of reading / °C) |
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| Storage environment | -10 °C ~ 50 °C, ≤ 80% RH (non-condensing) | |||
| Operating altitude | ≤ 2000 meters | |||
| Weight | 1.3 kg | |||
| Dimensions | 295mm(W) × 110mm(H) × 235mm(L) | |||
The accessories subject to final delivery.
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Power cord
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Voltage test leads
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Test leads
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User documentation
