Darui Electric recommendsBasic Test Items and Range1. AC voltage 50～750V (range can be expanded with PT)
2. AC current 0.5～600A (range can be expanded with CT)
3. Apparent power
4. Active power
5. Reactive power
6. Power factor 0～1.0
7. Active energy 0～99999.9kW·h
8. Reactive energy 0～99999.9kVAR·h
9. Grid frequency 10～80Hz
10. Plot current, voltage, active power, power factor curves
11. Calculate 9 parameters for motor economic operation
12. Calculate 7 parameters for motor working characteristics
13. Automatically calculate pumping unit balance rate and up/down stroke parameters
14. 1st to 50th harmonic analysis of voltage and current
15. Automatically calculate reactive power local compensation amount
16. Draw vector diagram, display phase values and phase differences
17. Two display methods for harmonic measurement (data and waveform)
Accuracy
Current, voltage: 0.5 class;
Power: 1.0 class;
Absolute error of power factor: <0.008;
Frequency error: <0.1Hz.
Product Introduction
● Measure all conventional electrical parameters of power frequency lines or electrical equipment and various parameters of motor operation
● Dual CPU high-speed sampling calculation, uninterrupted accurate recording of measurement data, full-range automatic conversion
● 128×128 LCD with backlight display, graphic and Chinese prompt display
● New thermal fast Chinese printer, Chinese prompts and printing of four operating condition curves
● Measurement data display items and print items can be selected as needed
● With external PT device, can measure 1140V, 3300V high-voltage equipment (optional function)
● Laptop serial communication, comprehensive storage of test data (optional function)
● Draw three-phase vector diagram, display phase relationship of current and voltage, touch button operation, buzzer response for key operation
● For fans, oilfield pumping units, coal mine scraper conveyors and other power frequency line equipment, can perform full-process dynamic measurement and energy-saving analysis.
● Referenced national standard GB12497-2006 "Economic Operation of Three-Phase Asynchronous Motors"
Input motor no-load parameters and rated parameters (the tester has built-in memory of 180 categories, over 6900 types, users can select and call), special motors can be input by users. Then it can detect the output power, efficiency, load rate at the motor shaft end (in compliance with GB12497-2006 "Economic Operation of Three-Phase Asynchronous Motors" national standard). According to user requirements, an optical digital sampler can be added to measure motor speed, used for fan efficiency testing in the fan industry during production and manufacturing.
Using the three-phase vector diagram function, it is convenient for users to judge the wiring during instrument use, the correctness of user line wiring, and the normal working status of the line, with miswiring judgment function.
Combined with computer serial communication, the instantaneous data of equipment power consumption can be fully recorded and stored. With dedicated computer software, data analysis can be performed, and the change curves of voltage, current, power (can distinguish positive and negative power) and other data during the operation of the tested equipment can be drawn, providing correct scientific basis for energy-saving management.
This tester has the advantages of large built-in motor parameter capacity, high measurement accuracy, easy operation, small size, light weight, comprehensive functions, and multiple uses in one machine. It solves the problem of motor negative power testing, fills the technical gap of similar domestic instruments, and is widely used in railway, oil field, power supply, energy supervision, power station, fan and other technical departments, and has been well received. It is truly an ideal intelligent power testing tool.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
