UT285C Three Phase Power Quality Analyzer
The UNI-T UT285C is a professional three-phase power quality analyzer built for industrial power grid, photovoltaic and distribution cabinet testing. It supports real-time 4-channel voltage and current waveform display, and delivers True RMS measurement for voltage and current. It can test peak voltage & current, total harmonic distortion (THD), active/reactive/apparent power (per phase & cumulative value), transformer K factor, power factor, short-term voltage flicker (PST)
Product Details
The UNI-T UT285C is a professional three-phase power quality analyzer built for industrial power grid, photovoltaic and distribution cabinet testing. It supports real-time 4-channel voltage and current waveform display, and delivers True RMS measurement for voltage and current. It can test peak voltage & current, total harmonic distortion (THD), active/reactive/apparent power (per phase & cumulative value), transformer K factor, power factor, short-term voltage flicker (PST), three-phase voltage and current unbalance. It comes with USB interface and matched PC software for data upload, analysis and report export, ideal for power maintenance engineers to diagnose power quality issues on site.
Key Features
● Waveform real-time display (4 channels voltage/current)
● True RMS values of voltages and currents
● Peak current and voltage values
● Total harmonic distortion (THD)
● Active, reactive, apparent power, by phase and cumulative
● Transformer K factor
● Power factors (PF) and displacement factors (DPF or COSΦ)
● Short-term voltage flicker (PST)
● Three phase unbalance(current and voltage)
● USB interface/PC software
FAQ
Q: What is UT285C used for?
A: It is a professional three-phase power quality analyzer, used for power grid, distribution cabinet and photovoltaic power quality inspection, to find harmonic, unbalance, flicker and power factor problems.
Q: How many channels does it support for waveform display?
A: It supports 4 channels of voltage and current real-time waveform display.
Q: Can it test harmonic distortion?
A: Yes, it can measure THD total harmonic distortion, and also calculate transformer K factor.
Q: Does it support data export?
A: Yes. It has a USB port, you can connect it to PC software to save, analyze and export test data.
Q: What power quality parameters can it measure?
A: It covers True RMS, peak value, THD, active/reactive/apparent power, PF, DPF, PST flicker, three-phase unbalance.
Specifications
Specifications | UT285C | |
True RMS phase-to-neutral voltage | 1.0V~ 1000V | ±(0.5%+5dgt) |
True RMS phase-to phase voltage | 1.0V~ 2000V | ±(0.5%+5dgt) |
DC voltage | 1.0V~ 1000V | ±(1.0%+5dgt) |
True RMS current | 008B current clamp: 10mA~10.0A(optional); | ±(0.5%+5dgt) |
Peak of phase-to-neutral voltage | 1.0V~ 1414V | ±(1.0%+5dgt) |
Peak of phase-to-phase voltage | 1.0V ~ 2828V | ±(1.0%+5dgt) |
Current peak | 10mA ~ 6000A(optional) | ±(1.0%+5dgt) |
Active power | 0.000W~ 9999.9kW | ±(1%+3dgt) |
Cosφ≥0.8 | ||
±(1.5%+10dgt) | ||
0.2≤Cosφ<0.8 | ||
Reactive power, inductive or capacitive | 0.000RVA~ 9999.9kVAR | ±(1%+3dgt) |
Sinφ≥0.5 | ||
±(1.5%+10dgt) | ||
0.2≤Sinφ<0.5 | ||
Apparent power | 0.000VA~ 9999.9kVA | ±(1%+3dgt) |
Power factor | -1.000~ 1.000 | ±(1.5%+3dgt) |
Cosφ≥0.5 | ||
±(1.5%+10dgt) | ||
0.2≤Cosφ<0.5 | ||
Active energy | 0.000Wh~ 9999.9MWh | ±(1%+3dgt) |
Cosφ≥0.8 | ||
±(1.5%+10dgt) | ||
0.2≤Cosφ<0.8 | ||
Reactive energy, inductive or capacitive | 0.000VARh~ 9999.9MVARh | ±(1%+3dgt) |
Sinφ≥0.5 | ||
±(1.5%+10dgt) | ||
0.2≤Sinφ<0.5 | ||
Apparent energy | 0.000VAh~ 9999.9MVAh | ±(1%+3dgt) |
Phase angle | -179°~ 180° | ±(2°) |
Tanφ | -32.76~ 32.76 | φ:±(1°) |
(VA>50VA) | ||
Phase shift of power factor | -1.000~ 1.000 | φ:±(1°) |
(DPF) | ||
Harmonic ratio | 0.0%~ 99.9% | ±(1%+5dgt) |
(order 1 to 50) (Vrms>50V) | ||
Harmonic angle | -179°~ 180° | ±(3°) harmonics of order 1 to 25 |
(Vrms>50V) | ±(10°) harmonics of order 26 to 50 | |
Total harmonic ratio | 0.0%~ 99.9% | ±(1%+5dgt) |
Distortion factor | 0.0%~ 99.9% | ±(1%+10dgt) |
(DF or THD-R)<50 | ||
Transformer K factor | 1.00~ 99.99 | ±(5%) |
3 phases unbalance | 0.0%~ 100% | ±(1%) |
Number of channels | 4U/4I | |
Parameters of electricity | W, VA, Var, PF, DPF, cosφ, tanφ | |
Energy parameters | Wh, Varh, Vah | |
Harmonic | 50 | |
Total harmonic distortion | Order 0~50, each phase | |
Expert mode | Yes | |
Number of Transient records | 150 sets | |
3 phases unbalance | Yes | |
Min/Max | Yes | |
Alarm | 40 different types of parameter selections, 12,800 sets alarm logs | |
Peak | Yes | |
Phasor diagram display | Auto | |
Auto power off | Yes | |
Backlight | Yes | |
Menu language | English/Chinese | |
USB interface/PC software | Yes | |
General Characteristics | ||
Power | 9.6V rechargeable lithium-ion battery | |
Product color | Red and grey | |
Product net weight | Instrument: 1.6kg, current clamp: 510g x 4 | |
Product size | 240mm × 170mm × 68 mm | |
Standard accessories | 1pc carry cloth bag, (yellow, green, red, blue, black total 5pcs test lead), 4pcs alligator clip, 1pc power adapter, 4pcs 1000A current clamp | |
Standard individual packing | Inner carton | |
Standard quantity per carton | 1pc | |
Standard carton measurement | 440 x 320 x 330mm | |
Standard carton gross weight | 6.4kg | |
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