Multifunction Wireless Phase Voltmeter

Multifunction Wireless Phase Voltmeter

The new generation of intelligent three-phase AC power parameter measuring instrument, dual-unit wireless model, accurately detects power line parameters and wiring status.

Wireless connectivity, multi-parameter measurement, intelligent wiring identification, supports Bluetooth/PC data management, and dual power supply for safe operation.

Power supply department's relay protection, meter calibration, transformer testing, power line fault diagnosis and load monitoring

The MOEORW-WNS42 Multifunction Wireless Phase Voltmeter is a new generation of intelligent AC power parameter measuring instrument, mainly used for on-site detection of various AC power parameters and power line wiring conditions. It uses direct AC sampling to measure power frequency parameters (such as RMS voltage and current, active and reactive power, apparent power, power frequency, power factor, phase relationship, etc.) and can directly display vector diagrams. It is particularly suitable for checking the secondary circuit current wiring of relay protection systems in various power supply departments.

1.Reference working conditions

2. Basic Error Limit

Note: For phase measurements at 5mA-10mA and 5V-10V , the phase error is ±3°. Under rated operating conditions, the rated operating error limit of each measurand shall not exceed twice the corresponding basic error limit.

3. Measurement Characteristics Description

Voltage channel

Input method: Three inputs are connected via UAN/UBN/UCN respectively; Input impedance: 500KΩ;

Measurement method: True RMS principle.

Current channel

Input method: The three inputs are sampled by clamp-on current transformers IA, IB, and IC respectively;

Measurement method: True RMS principle.

Online Records

Set the following items: U1, U2, U3, I1, I2, I3, Φ, P1, P2, P3, P, Q1, Q2, Q3, Q, cos1, cos2, cos3, cos, F (choose any 4 items each time).

Periodic interval: can be set arbitrarily from 1 to 99 seconds. Start and end times: Manual start

4. Safety Features

Withstand voltage: The voltage input terminal, the AC charging power input terminal and the instrument housing, and the iron core and lead wires of the clamp current transformer and the clamp handle can withstand a 1KV/50Hz sinusoidal AC voltage for 1 minute.

Insulation resistance: The insulation resistance between the test points mentioned above is greater than 100MΩ/1KV.

5. Instrument dimensions and weight

host Dimensions: 275×200×72 (mm) Weight: 1.2 kg (including battery)

from Machine dimensions: 185×85×41 (mm) Weight: 350 g (including battery)

Current clamp: 1 40 × 4 0 × 19 (mm) Weight: 160g/ piece; Jaw: Φ8mm

machine Box (main unit): 423 × 336 × 126 (mm) Weight: 5.6 kg

machine Box (slave unit): 280 × 240 × 127 (mm) Weight: 0.85 kg

6. Usage conditions

Operating environment: Temperature -15℃ to +40℃; Operating humidity ≤90%RH

Storage environment: Temperature -30℃ to +60℃; Storage humidity ≤95%RH

Altitude: <1500 meters

• It features a 7-inch 800*480 dot matrix TFT true color LCD display with a graphical user interface that can be operated via touch screen or buttons, providing a clear and intuitive display.
• Automatic range switching function, no manual switching required.
• Measurement with multiple wiring methods: It can be used with various wiring methods such as single-phase, three-phase Y/Δ.
• It measures various parameters such as AC voltage, current, power, frequency, phase, power factor, low-voltage CT ratio, and angle difference for 1-3 channels of AC.
• The three voltage input channels are insulated from the instrument's internal components, and the three current inputs use clamp-on current transformers, ensuring safety and reliability.
• Automatically detects wiring errors in P3/P4 energy meters, points out the location of the incorrect wiring, displays the secondary wiring diagram and power expression, and calculates the correction factor and supplementary power.
• Load curve recording (trend recording): Select any 4 items from the data items such as voltage, current, frequency, power, and power factor to record.
• It can perform voltage quality imbalance calculations.
• Vector calculator: Calculates the vector sum of voltage and current, and calculates the neutral current value.
• It can be configured to convert PT and CT data into primary data through secondary side measurements.
• It can display three-phase voltage and current waveforms, and 2nd to 21st harmonics in real time.
• It can save 4000 sets of measurement data, and users can view the saved data sets and vector diagrams.
• Dual power supply: AC measurement terminals are directly powered by 80V-450V, and a built-in high-capacity lithium battery is also available.
• It has a built-in standard English character library, which can be used to input Chinese characters, letters, numbers, and other stored content.
• The instrument is equipped with a USB interface, allowing measurement data to be directly exported to a computer for management via a USB flash drive. The host computer management software enables functions such as browsing, editing, printing (A4 size ) standard format test reports, and backup of instrument data.
• The system collects and monitors on-site electrical equipment 24 hours a day, detects three-phase load imbalance and load fluctuation, and displays voltage deviation, three-phase voltage imbalance rate and three-phase current imbalance rate.
• Optional wireless transmission and communication functions: Bluetooth wireless + dedicated smart APP software enables data collection, storage, viewing and analysis on Android handheld terminals.
• The dedicated APP system software is highly adaptable, compatible with all Android phones, featuring a graphical Chinese interface and touch operation. It has a large data storage capacity, storing test data including voltage, current, phase, power, power factor, vector diagrams, and secondary circuit wiring diagrams.
• It has data query and management functions, allowing users to view stored test data, including electrical parameters, vector diagrams, wiring diagrams, and more.
• Android-based handheld terminals offer more powerful app applications, and the terminals themselves can be used for investigation and evidence collection functions (such as taking photos, recording videos, and locating locations).
• Extended Combination: Wireless connection with slave devices enables the following functions:
• The slave unit features a 2.4 - inch monochrome LCD display with dual channels: one voltage channel and one current channel.
• The slave device can be used independently to measure electrical parameters such as voltage, current, phase, active power, reactive power, and power factor.
• Using the main unit as a reference, it measures electrical parameters such as voltage, current, phase, and power at two different measurement points on the same line in the secondary circuit of the substation, or compares and checks data of the meter box to the user line. The master and slave units transmit signals wirelessly, and the wireless data transmission distance is within 200 meters.
• Both the master and slave units can be used independently, or they can be connected together for synchronous measurement. The connected working mode has two modes: single-unit and dual-unit.