Uni-T UT285C Three Phase Power Quality Analyzer

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Waveform real-time display (4 channels voltage/current).



  • 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.

1 x  UT285C, 1 x carry cloth bag, (yellow, green, red, blue, black total 5pcs test lead), 4 x alligator clip, 1 x power adapter, 1 x CD software, 4 x 1000A current clamp, 1 x English manual and 12-month warranty


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 10mA~ 1000A ±(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~ 1414A ±(1.0%+5dgt)
Active power 0.000W~ 9999.9kW ±(1%+3dgt)
Reactive power, inductive or capacitive 0.000RVA~ 9999.9kVAR ±(1%+3dgt)
Apparent power 0.000VA~ 9999.9kVA ±(1%+3dgt)
Power factor -1.000~ 1.000 ±(1.5%+3dgt)
Active energy 0.000Wh~ 9999.9MWh ±(1%+3dgt)
Reactive energy, inductive or capacitive 0.000VARh~ 9999.9MVARh ±(1%+3dgt)
Apparent energy 0.000VAh~ 9999.9MVAh ±(1%+3dgt)
Phase angle -179°~ 180° ±(2°)
Tanφ -32.76~ 32.76 φ:±(1°)
Phase shift of power factor -1.000~ 1.000 φ:±(1°)
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 colour 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, 1pc CD software, 4pcs 1000A current clamp


Uni-T UT285C Three Phase Power Quality Analyzer English Manual

Uni-T UT285C Three Phase Power Quality Analyzer Product Flyer