Wuhan Wugao Electric Measurement Co., Ltd

WD-300B Three-phase intelligent phase voltammeter

WD-300B three-phase intelligent phase voltammeter is a multi-functional intelligent meter specially designed for on-site testing. The host adopts a 3.5-inch true color LCD screen, with graphical menu interface display and vector diagram instructions, which are clear at a glance. The small clamp head design of the current clamp is easy to operate, and is very suitable for places with dense cables. The instrument can 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, etc. Power factor and current vector sum, identify transformer wiring group, inductive and capacitive circuits, test secondary circuit and bus differential protection system, read out the phase relationship between CTs of each group of differential protection, and check that the wiring of the watt-hour meter is correct Whether or not, repair line equipment, etc., to provide a safe, accurate and convenient smart meter for electricity inspectors. Applicable to electric power, petrochemical, metallurgy, railway, meteorology, industrial and mining enterprises, scientific research institutions, measurement departments, etc. Especially suitable for electric energy billing system and relay protection system.

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Product Details

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1.Baseline conditions and operating conditions

影响量

Baseline conditions

working conditions

ambient temperature

23℃±1

-10℃~40

environmental humidity

40%60%

<80%

Signal waveform

Sine wave β=0.01

Sine wave β=0.01

signal frequency

50HZ±1HZ

45HZ65HZ

Instrument operating voltage

7.4V±0.5V

7.4V±1V

Current amplitude when measuring phase frequency and phase sequence

1A±0.1A

1mA30A

Voltage amplitude when measuring phase frequency and phase sequence

100V±10V

1V600V

Current amplitude when measuring power factor

1A±0.1A

10mA30A

Voltage amplitude when measuring power factor

100V±10V

10V600V

External electric and magnetic fields

should be avoided

Measured lead position

The conductor under test is at the approximate geometric center of the jaw


2. general specification 

Features

Simultaneously test the current, voltage, phase, frequency, phase sequence, active power, reactive power, apparent power, power factor, and current vector sum in the three-phase 380V/220V power system, and determine the transformer wiring group, inductive, capacitive circuit, test the secondary circuit and the bus differential protection system, read out 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, etc.

  power supply

DC 7.4V large-capacity rechargeable lithium battery, USB charging interface, fully charged for about 10 hours of continuous work

  Rated current

About 180mA Max

  display mode

3.5 inch true color LCD display

  Meter size

Length, width and thickness: 196mm×92mm×54mm

  Jaw size

φ7.5mm×13mm

  sample rate

About 3 times/sec

Range

AC voltage: 0.00V600V

AC current: 0.0mA30A

Phase: 0.0°360.0°

Frequency: 45.00Hz65.00Hz

Active power: 0.0W12kW

Reactive power: 0.0VAR12kVAR

Apparent power: 0.0VA12kVA

Power factor: -1+1

Current vector sum: 0mA60A

Resolution

Voltage: AC 0.01V

Current: AC 0.1mA

Phase: 0.1°

Frequency: 0.01Hz

Active power: 0.1W

Reactive power: 0.1VAR

Apparent power: 0.1VA

Power factor: 0.001

Current vector sum: 1mA

Accuracy

Voltage: ±(0.5% of range)

Current: ±(0.5% of range)

Phase: ±1° (Phase error under working conditions: ±3° from 10mA to 30A; ±5° below 10mA; when the current value is lower than 5mA, in order to ensure accurate current-to-current phase measurement, please do not measure voltage; In the phase test of voltage to current, in order to ensure the accuracy of the measurement, the voltage should not be lower than 5V and the current should not be lower than 5mA)

Active power: ±(1.0% of range)

Reactive power: ±(1.0% of range)

Apparent power: ±(1.0% of range)

Frequency: ±(1.0% range)

Power factor: ±0.03

Phase

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

Inverted: U1, U2, U3 or I1, I2, I3 cursors flash sequentially from right to left

Detection rate

About 2 seconds/time

data retention

During the test, press the HOLD key to keep the data, and the "HD" symbol will display

data storage

99 groups

charging interface

USB charging port

Automatic shut-down

After about 15 minutes of power on, the meter automatically shuts down to reduce battery consumption

Backlight function

Yes, backlight brightness can be adjusted

Voltage detection

When the battery voltage is lower than 6.5V, the low battery voltage symbol will be displayed, reminding to charge the battery, and automatically shut down within 10S.

Instrument weight

Host: 350g (with battery)

Current clamp: 170g×3

Total mass: about 1.35kg

Test lead length

1.5m

Current clamp wire length

2m

Working temperature and humidity

-10℃~40; below 80%Rh

Storage temperature and humidity

-10℃~60; below 70%Rh

input resistance

Test voltage input impedance: 1MΩ

Pressure resistance

Withstand 1000V/50Hz sine wave AC voltage between instrument circuit and enclosure for 1 minute

Insulation

Between instrument line and sheath shell ≥100MΩ

Suitable for safety regulations

IEC61010-1 CAT  600V, IEC61010-031, IEC61326, pollution degree 2


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