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FR2020 Series Three-phase Digital Phase Voltammeter

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Simultaneously measure three-phase AC voltage, current, phase between voltages, phase between currents, phase between voltage and current, frequency, phase sequence, active power, reactive power, apparent power, power factor, current vector sum, and determine the transformer wiring group , Inductive and capacitive circuits, test the secondary circuit and the bus differential protection system, read the phase relationship between the CTs of each group of differential protection, check whether the wiring of the watt-hour meter is correct or not, and repair the line equipment.


DC3.7V large capacity lithium rechargeable battery

Power consumption

When the backlight is turned on, the maximum power consumption is 250mA, and the battery can work continuously for more than 5 hours.

 Display mode

LCD display:71×52mm

Instrument size


Jaw size


Voltage range

AC 0.00V~600V

Current range

AC 0.0mA~20.0A

Phase range


Frequency range


Active power range


Reactive power range


Apparent power range


Power factor range


Current vector sum



Voltage:AC 0.01V


Current:AC 0.1mA






Active power:0.1W


Reactive power:0.1VAR


Apparent power:0.1VA


Power factor:0.001


Current vector sum:1mA

Phase sequence

Positive phase: U1, U2, U3 or I1, I2, I3 cursors flash from left to right

Invert phase: U1, U2, U3 or I1, I2, I3 cursor flash from right to left

Detection rate

About 2 seconds/time

Data hold

Press HOLD key to hold data during test, “HOLD” symbol display

Data storage

500 groups

USB interface

USB interface, uploading data to a computer for analysis of management data

Automatic shut-down

About 15 minutes after power on, the meter will automatically shut down to reduce battery consumption

Backlight function

Suitable for dim places and night use

Voltage detection

When the battery voltage is lower than 3V, the low battery voltage will display, remind to charge in time

Instrument weight

Hose:450g(including battery)


Large diameter current clamp:170g×3


Test line:250g

Test line length


Current clamp line length


Working temperature and humidity

-10℃~40℃;below 80%Rh

Storage temperature and humidity

-10℃~60℃;below 70%Rh

input impedance

Test voltage input impedance is:2MΩ

Pressure resistance

The withstand voltage of 1000V/50Hz sine wave AC voltage between the instrument circuit and the housing lasts 1 minute


Between instrument line and housing≥100MΩ


Double insulation

Suitable for safety regulations

IEC61010-1 CAT Ⅲ 600V,IEC61010-031,IEC61326,Pollution level2

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