my country's power system implements a two-part electricity price: in addition to the fee measured by the metering device, the basic electricity fee is also charged according to the transformer capacity; for larger users, a one-time capacity increase fee is also charged when the transformer is put into operation. With the development of the electric power industry and the increase in electricity consumption, self-owned transformers and individual contracted transformers have gradually taken up a considerable share of the distribution transformation. What follows is that individuals pay less and use more electricity. All kinds of fraudulent methods (mainly changing and replacing transformer nameplates) are adopted; some users steal electricity bills of hundreds of thousands a year, and the power sector suffers from the lack of effective control methods.
The active transformer characteristic-capacity comprehensive tester is a high-precision instrument specially developed and developed by our company for the measurement of transformer capacity and loss parameters for this kind of problem. It comes with a high-efficiency rechargeable battery that can work without an external power supply. It can continuously measure 500 units after a single charge; at the same time, the internal digital synthesis of three-phase standard sine wave signal (not a simple inverter AC output, guarantees non-rated conditions The accuracy of the test data of the following test items), the power amplifier can provide a three-phase precision AC test source; when measuring the transformer capacity and the short-circuit loss of the transformer, there is no need to connect the three-phase test power supply, voltage regulator, booster and other auxiliary equipment , Simplifies wiring and greatly improves work efficiency.
The accuracy of the capacity test results is quite high. One kind of equipment is equivalent to four kinds of equipment: active transformer capacity tester + transformer loss parameter tester + harmonic analyzer + oscilloscope. It can accurately measure a series of power frequency parameters such as the capacity, no-load current, no-load loss, short-circuit loss, impedance voltage of various transformers, and can measure the voltage, current distortion and harmonic content during the no-load test , You can also perform vector analysis.
The instrument has the advantages of small size, light weight, high measurement accuracy, good stability, easy operation and easy learning. It can completely replace the previous method of measuring transformer loss and capacity by using the multi-meter method. It has simple wiring, convenient testing and recording, and greatly improved Improve work efficiency. It uses a large-screen color LCD as the display window, menu operations and is equipped with Chinese character prompts, a multi-parameter display interface, a friendly man-machine dialogue interface, easy and fast to use, and it is the first choice for power users at all levels.
Technical index
1. Input characteristics
Active part:
Voltage measurement range: 0~10V
Current measurement range: 0~10A
Passive part:
Voltage measurement range: 0~750V wide range.
Current measurement range: 0~100A internally all automatically switch the range.
Accuracy
Voltage: ±0.5%
Current: ±0.5%
Power: ±0.5% (CosΦ>0.2), ±1.0% (0.02
Working temperature: -10℃~ +40℃
Charging power supply: AC 160V~260V
Insulation: (1) The insulation resistance of the voltage and current input terminals to the chassis is ≥100MΩ.
⑵The power frequency is 2kV (effective value) between the input end of the working power supply and the shell, and the experiment lasts for 1 minute.
Host volume: 32cm×24cm×13cm
Weight: 3kg
Features
1. It can accurately measure the capacity of various distribution transformers, passive measurement, convenient and accurate.
2. The built-in power supply can automatically generate a three-phase high-power test power supply.
3. It can measure the no-load current, no-load loss, short-circuit voltage, and short-circuit loss of various types of transformers.
4. The no-load test can accurately determine the type of transformer under test, including: S7, S9, S11, S13, S15, dry transformer SCB9, SCB10, SCB11 and other types of transformers.
5. It can automatically perform waveform distortion correction, temperature correction (provide simple temperature correction and additional loss correction respectively), voltage correction (no-load test under non-rated voltage), current correction (short-circuit under non-rated current conditions) Test), very suitable for units that have not done short-circuit test conditions for a slightly larger-capacity transformer.
6. It can measure the harmonic content and total harmonic distortion of voltage and current.
7. It can perform simple vector analysis and draw vector diagrams.
8. Display the waveform diagram of each electrical parameter and use it as an oscilloscope.
9. Wide range of voltage loop: The maximum voltage can be measured up to 750V, and the accuracy can be guaranteed without switching gears. The instrument itself will not be damaged due to the wrong selection of the voltage range.
10. Capacity measurement range: 20kVA~100000kVA.
11. The function of indicating the percentage of remaining battery power is by no means a simple alarm for power loss.
12. Large screen, high-brightness color LCD display, full Chinese character menu and operation prompts to realize friendly man-machine dialogue. Conductive silicone touch buttons make the operation easier and the button life longer.
13. The user can print out the test data through a micro printer at any time.
14. Test result storage function, which can store 200 sets of capacity test data.
Mobile version
15388193573
