At present, energy saving and consumption reduction is an important direction for the development of power systems. In the operation of distribution transformers, the phenomenon of three-phase load imbalance is common, which reflects the imbalance between three-phase voltage and three-phase current, and three-phase voltage and current. The degree of unbalance will increase the loss of the line and the transformer, and even affect the safe operation of the transformer. The unbalance of the three-phase voltage and current will cause the unbalance of the three-phase voltage and thus reduce the quality of power supply, and even affect the accuracy of the electric energy meter and cause measurement loss. The three-phase voltage and current unbalance tester designed and produced by our company is a high-precision instrument dedicated to testing, recording, and analyzing the three-phase voltage and current unbalance of the power supply system; at the same time, it is a multi-functional tester. The instrument can measure a series of parameters such as three-phase voltage amplitude, three-phase current amplitude, three-phase active power, three-phase reactive power, three-phase power factor, three-phase phase angle, etc.; it can also be used for wiring inspection of metering devices analyze. The instrument is exquisitely designed and easy to use, which provides users with advanced and effective testing methods for users to allocate load as much as possible.
Technical index
Input characteristics
Voltage measurement range: 0～100V～400V two gears.
Current measurement range:
Clamp-on transformer; 200A～1000A (standard configuration)
Phase angle measurement range: 0~359.99°.
Frequency measurement range: 45~55Hz.
Number of voltage channels: three channels (UA, UB, UC).
Number of current channels: three channels (IA, IB, IC).
Maximum continuous storage period: 48 months-1 minute interval.
Accuracy
Electrical parameter measurement part:
Voltage: ±0.2% Unbalance: ±0.2%
Frequency: ±0.001Hz
Current: ±0.5% Unbalance: ±0.5%
Power: ±0.5%
Phase: ±0.2°
Working temperature: -10℃~ +40℃
Charging power supply: AC100V～220V, frequency 45Hz-55Hz
Host power consumption: ≤3VA
Maximum battery working time: ≥6 hours
insulation:
⑴ The insulation resistance of the voltage and current input terminals to the chassis is ≥100MΩ.
⑵. The power frequency is 1.5KV (effective value) between the input end of the working power supply and the shell, and the experiment lasts for 1 minute.
Volume: 260mm×160mm×60mm
Weight: 1.6 Kg
Features
1. The instrument is a high-precision testing instrument specially used to detect power quality problems caused by unbalanced three-phase voltage and current; it also has the functions of electrical parameter testing and vector analysis.
2. It can accurately measure a variety of electrical parameters such as voltage, current, active power, reactive power, phase angle, power factor, and frequency.
3. The vector diagram of the measured voltage and current can be displayed, and the user can analyze the vector diagram to get the correctness of the wiring of the metering equipment.
4. The current is measured by a clamp-on transformer, and the operator can measure conveniently and safely without disconnecting the current loop.
5. All test interfaces have screen lock function to facilitate users to read and analyze data.
6. Different storage intervals can be set, and data can be stored continuously according to the set time interval;
7. Built-in large-capacity data storage, which can be continuously stored for more than 48 months at a time interval of 1 minute, which can meet the needs of long-term monitoring and testing points.
8. The instrument has a USB interface, which can easily copy the data directly to the background management computer.
9. Cooperating with powerful data management software, real-time sampling data can be directly uploaded to the background management computer for more comprehensive and faster processing in the background.
10. With perpetual calendar and clock functions, real-time display of date and time. The test data and results can be saved at the same time of on-site testing, and uploaded to the computer through the serial port, and the data can be managed by computer through the background management software (optional).
11. The large-screen imported LCD is used as the display, the Chinese operation interface is equipped with Chinese character prompt information, and the liquid crystal display interface with multi-parameter display, and the man-machine dialogue interface is friendly.
12. Conductive silica gel buttons, good hand feeling, long life, reasonable design and convenient operation.
13. Built-in high-capacity, high-performance lithium-ion rechargeable battery, fully charged and continuously working for more than 6 hours.
14. Small size, light weight, easy to carry, very suitable for on-site measurement.
Mobile version
15388193573
