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MT-3551T Power Meter Tester

It is multi-functional in field testing for power meters and metering units of all wirings. Testing functions include: metering unit and power meter. With these function, it is widely used in power utility, substation, telecom machine room and the alike for power consumption examination, circuit breakage inspection, power abnormality analyzing, asset management and industrial production management.

MT-3551T Three Phase Meter Tester_catalog V1.3


  • Smart, portable and easy touch-screen (TFT) operation
  • Single-phase and three-phase measurement, two in one
  • Combination of electricity meter tester and power quality analyzer
  • Online monitor for real-time data testing and comparison
  • Safe and quick measurement for electricity anti-theft
  • Test result playback on screen and transferable to PC for report printing
  • User-friendly interface and vivid screen display, simplify on-site testing power meters

Scanning Head for MT-3551T Power Meter Tester:



Meter measurement

Three phase metering unit
Three phase power meter
Single phase metering unit
Single phase power meter
High-volt power meter

CT ratio

Test CT ratio and phase deviation

Online monitor

1)     Active energy, reactive energy, harmonic active, harmonic reactive and power factor in low-volt with load
2)     Active energy, reactive energy, harmonic active, harmonic reactive, power factor of power meter in different voltage rate.
3)     Fundamental harmonic and all harmonics loads


1-50 current harmonics and voltage harmonics, THD, harmonic content

Wire connection

Help judge if wire connection with meter is correct or not.

Voltage signal input: Direct input

  • Resistance: >2MΩ, 20pF
  • Testing range: 10~700Vrms
  • Peak voltage: 1000V
  • Power consumption: <0.5VA/phase

Current input circuit

  • Indirect input, with different current clamps
  • Testing range: 20Arms, 500Arms, 1000Arms
  • Power consumption: <2.0VA/phase

Frequency range: 40 Hz ~70Hz
Measurement accuracy: 0.5
Screen and memory

  • Screen: 640×480, 3.5’ TFT LCD touch-screen
  • Internal Memory: 16 MB Flash
  • External Memory:4GB
  • Com port: USB port

Power supply: Rechargeable Li-ion battery
Workable for 5~6 hours

  • Power adaptor: AC100~240V/DC16.8V-1A adaptor
  • Main unit: 0.7kg, 277×169×36mm
  • Working temperature: -20~40℃
  • Relative humility: 5~90%RH

Insulation: >2MΩ, AC1500V/50Hz, 1 min 








Optional for5A,10A, 20A, 60A, 100A, 500A and 1000A CT








Active power



Reactive power



Active energy



Reactive energy



Power factor




Voltage harmonics: 1~50
Current harmonics:1~50

Volt harmonics: ±0.2(%f)
Current harmonics:±0.2(%f)

Impulse constant

FL = 36000×(5/Ie)P/kW·h   Ie: CT range

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