NDBC-V Distribution Transformer Winding Material Inspection Device-Wuhan Nanxing Electric Power Technology Co., Ltd.

Phone: 400-027-8938

Mobile: 133 9714 9829

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NDBC-V Distribution Transformer Winding Material Inspection Device

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Transformer Testing Series

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NDBC-V配电变压器绕组材质检测装置

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Product Details

■ Product Overview

This instrument features functions such as transformer capacity measurement, no-load loss testing, load loss testing, and horizontal‑level assessment of these parameters. It is equipped with a high‑efficiency rechargeable battery, enabling operation without an external power source. A single full charge allows for continuous measurements. 100 Transformers rated at 10 kV and above. In addition, the instrument can provide three-phase precision… 50Hz The sine‑wave AC test power supply eliminates the need for external three‑phase test sources, voltage regulators, current boosters, and other auxiliary equipment when measuring transformer capacity and load losses, thereby significantly enhancing your operational efficiency.

This instrument is a multifunctional measuring device, equivalent to the four conventional test instruments: namely, an active transformer capacity tester. + Transformer Characteristic Parameter Tester + Transformer DC Resistance Tester + Transformer material analyzer. It enables precise measurement of a wide range of power-frequency parameters for various types of transformers, including material composition, capacity, model, no-load current, no-load losses, load losses, impedance voltage, and DC resistance.

This product boasts numerous advantages, including a compact size, lightweight design, high measurement accuracy, excellent stability, and simple operation. It can fully replace the conventional multi-meter method for measuring transformer losses and capacity, offering simpler wiring and more convenient testing and data recording, thereby significantly boosting your work efficiency.

■ Product Features

Adopt ARM+FPGA+ADC mode, accompanied by RT-Thread Real-time operating system, resulting in a more robust instrument system and higher measurement accuracy.

10.1 Inch color high-brightness LCD, touchscreen, Win8 Stylish interface, Chinese input, fully Chinese menus.

It features comprehensive electronic assistance, with wiring diagrams and textual instructions for all operations, making it intuitive and easy to use.

Built-in large-capacity storage, USB Communication via the port; both on-site test data can be saved, and, as per customer requirements, the data can be uploaded to… PC Machine.

It features remote firmware upgrade capability, allowing instrument software to be updated remotely upon customer request.

On each test interface, you can monitor the real-time status of the voltage and current channels.

It can provide the harmonic content of the voltage and current channels during various transformer characteristic tests, displayed in bar charts.

It displays, in real time via a single interface, the test circuit’s voltage, current, frequency, power factor, active power, reactive power, and apparent power, and can generate vector diagrams to facilitate verification of on-site wiring.

Standard equipment includes a specially designed on-site low-voltage shorting lead, which requires no screws or wrenches and securely shorts the terminals of the transformer under test, facilitating convenient field testing.

It can measure the capacity of various distribution and power transformers on-site, eliminating the need for an external power supply and making testing more convenient and faster.

When used in conjunction with an external power supply and equipment for voltage regulation, step-up, and current boosting, it can measure various transformer characteristic parameters, including no-load current, no-load losses, impedance voltage, and load losses.

All test results have been automatically subjected to the relevant corrections. You simply need to input the pertinent parameters—such as temperature and no-load correction coefficients—and the instrument will automatically perform a variety of corrections, including waveform distortion correction, temperature correction, non‑rated voltage correction, and non‑rated current correction, thereby enhancing the accuracy of the test results.

In transformer characteristic measurements, the maximum voltage range can reach 850V , the maximum current range reaches 100A Moreover, it is equipped with a built-in protection circuit. During measurement, you can maintain high accuracy without switching ranges, and you need not worry about damaging the instrument due to an incorrect range selection.

During transformer characteristic testing, both voltage and current ranges can be expanded with great flexibility and ease—simply by connecting external voltage transformers and current transformers—thereby significantly broadening the instrument’s measurement range.

Based on the no-load and load losses reported in the test results, the performance levels of three-phase oil-immersed distribution transformers and power transformers can be automatically estimated, providing on-site reference for field personnel.

Direct resistance testing provides 6 Output current selection; maximum output is 10A Electric current.

Parameter settings have been further refined, allowing users to configure the transformer’s test winding, tap position, test phase, specimen temperature, and conversion temperature value, among other parameters.

It features an audio‑based discharge alarm to minimize operator errors.

■ Product Specifications

1 , Built-in power supply output range

Voltage: 0 ~ 10V

Current: 0 ~ 10A

2 , Test range and accuracy of the characteristic channel

Voltage range: AC 850V . Accuracy, ± 0.2% ( F.S ) ± 1 characters

Current range: AC 100A . Accuracy, ± 0.2% ( F.S ) ± 1 characters

DC resistance test range

0.0001 Omega -0.1 Ω （ 10A )

0.03 Omega -1 Ω （ 5A )

0.06 Omega -5 Ω （ 1A )

0.1 Omega -50 Ω （ 200mA )

0.3 Omega -200 Ω ( 40mA )

100 Omega -100k Ω （ <5mA)

Direct resistance test accuracy

0.2% ± 2 microohm

Resolution

0.1 microohm

Measurement accuracy of power and other parameters

Power: ± 0.2% ( F.S ) ( Cos Phi >0.1 ) ,

± 0.5% ( F.S ) ( 0.02 < Cos Phi <0.1 )

7 , Transformer Capacity Test Range

6.3~125000KVA

8 , Operating Temperature

-20 °C～ +60 °C

9 , Charger Power Requirements : Mains power AC160V ~ 265V

10 , Insulation degree

⑴ Insulation resistance between the capacity test, voltage, and current input terminals and the enclosure ≥ 100M Omega

⑵、The power supply input shall withstand the power-frequency voltage between the input and the enclosure. 2KV (Valid value), test duration 1 minute

11 , volume :40cm × 30cm × 19cm

12 , weight :5 kg

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NDBC-V Distribution Transformer Winding Material Inspection Device

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