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Transformer Test Equipment

Your Professional Transformer Test Equipment Supplier

Our goal is to become your true partner in the field of transformer test equipment China. Beijing Huazheng Technology Co., Ltd. is an enterprise with outstanding innovation capabilities in the field of high voltage testing equipment. We have established a comprehensive pre-sales, sales, and after-sales service system to provide customers with comprehensive support and solutions. The factory has accumulated rich manufacturing experience. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

Why Choose Us

Customized solutions

We understand that each client's needs are unique, so we can tailor solutions to meet your specific requirements to meet individual client needs.

Quality control

We strictly abide by the international quality management system and strictly control every link from raw material procurement, production process, product quality inspection, etc. to ensure the stability and reliability of our products and services.

Our service
The company has a professional sales team to provide you with high-quality pre-sales consulting services. During the order production process, customers can communicate with us at any time to understand the production progress. At the same time, we provide high-quality after-sales service to meet the different needs of customers.

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Advantages of Transformer Test Equipment

Reliability and performance

Within power systems, a transformer failure can lead to a widespread power outage or disruption. Regular transformer testing ensures that the transformer continues to operate reliably and efficiently to minimize the risk of unexpected failures.

Safety

Transformers are responsible for handling high voltage levels, and a malfunction or defect can result in serious safety risks to personnel and equipment. With thorough transformer testing, potential hazards can be identified and rectified to ensure that this equipment continues to meet safety standards.

Defect detection

Insulation breakdown, winding faults, core issues, and cooling system problems are all defects transformers can suffer from. Comprehensive testing can identify these defects, allowing for timely repairs to prevent major failures.

Energy efficiency

Transformers can experience losses in efficiency due to issues with the core and windings. Regular transformer testing can quantify these losses and ensure that transformers continue to operate at optimal efficiency levels while reducing energy waste.

Applications of Transformer Test Equipment

Power Substations: In substations, regularly using transformer test equipment to test equipment can promptly identify potential issues and ensure safe operation of the power grid. For example, by regularly checking CTs and PTs, protection relays can be ensured to function correctly, thus avoiding large-scale power outages caused by equipment failures.

Power Equipment Manufacturing: During manufacturing processes, using these instruments to conduct comprehensive tests on newly produced transformers ensures that their performance meets industry standards. Manufacturers typically implement strict quality control before products leave the factory to guarantee product quality.

Research and Education: In universities and research institutions, transformer test equipment are used in teaching experiments and research projects to help students understand transformer operating principles and performance characteristics. For instance, students can learn through hands-on experience how to conduct voltage-current characteristic tests and analyze results, which is crucial for training future engineers.

On-Site Maintenance and Repair: These instruments are portable and suitable for on-site use. Technicians can quickly conduct equipment tests to improve work efficiency. During on-site maintenance, technicians can make quick decisions based on real-time data to address equipment failures promptly.

HZBB-10B Transformer Portable Handheld Turns Ratio Meter

Specification of Transformer Test Equipment

Item	HZBB-10B-I
Variable ratio test range	0.8～20000
Test voltage	AC 12V,24V,40V,80V,160V (manual selection)
Variable ratio test accuracy	0.1%(0.8-2000)
	0.2%(1000-5000)
	0.3%(5000-20000)
Size(mm)	270 × 190 × 70
Weight	2kg
Working voltage	AC 110～220V 50/60Hz
Working temperature	-10℃-40℃
Ambient humidity	10%-85%

Types of Transformer Test Equipment

Winding Resistance Testers: Measure the DC resistance of transformer windings to detect issues like shorted turns, poor connections, or other faults. Common models include micro-ohmmeters and winding resistance meters.

Insulation Resistance Testers (Megohmmeters): Assess the insulation quality of transformer windings and the dielectric strength of insulating materials. These instruments apply a high DC voltage and measure the resistance to ensure insulation integrity.

Transformer Turns Ratio (TTR) Testers: Measure the turns ratio between primary and secondary windings to verify the transformer's performance and detect winding damage or core issues.

Power Factor Testers: Evaluate the insulation condition by measuring the power factor or dissipation factor of the transformer windings and insulation system.

Sweep Frequency Response Analyzers (SFRA): Analyze the transformer's frequency response to detect mechanical issues like winding deformation, core movement, or structural damage.
SFRA tests are typically performed after transportation, seismic events, or suspected mechanical damage.

Dielectric Breakdown Voltage Testers: Test the dielectric strength of transformer oil or other insulating fluids by applying a high voltage until breakdown occurs.

Partial Discharge (PD) Testers: Detect and measure partial discharge activity within the transformer, indicating potential insulation defects, voids, or other issues that could lead to failure.

Excitation Current Testers: Measure the current required to energize the transformer's magnetic core, helping identify issues like core faults or winding problems.

Practical Operation Considerations of Transformer Test Equipment

Correct Wiring

Ensure all connections are correct to avoid measurement inaccuracies due to wiring errors. Before connecting, carefully check each terminal's labeling and follow the connection diagrams provided in the product manual.

Environmental Conditions

Conduct tests in stable environments with minimal interference to improve data accuracy. Avoid performing tests in high humidity or high-temperature conditions as these factors may affect equipment performance.

Regular Calibration

Periodically calibrate the testing instrument to ensure its measurement accuracy meets standard requirements. It is recommended to follow the calibration cycle provided by the manufacturer for regular checks while recording each calibration result for reference.

Training and Skill Enhancement

Operators should receive professional training to familiarize themselves with equipment operation procedures and safety precautions to ensure safe and effective completion of various testing tasks.

Components of a Transformer Test Equipment

Voltage and current source

Generates the electrical signals required for the test.

Reference transformer

High-precision transformer that serves as a reference standard.

Measuring unit

Acquires and processes the measurement signals.

Control unit

Controls the test sequence and signal generation.

Display and operating unit

Enables the input of test parameters and the display of results.

Other Service of Transformer Test Equipment

Transport Package	Wooden Box with Foam Inside
Transportation	Land, Air, Sea

FAQ

Q: What is transformer testing equipment?

A: The Single Phase Transformer Testing Equipment TTR, Transformer Turns Ratio Test Set, measures the turns ratio and exciting current of windings in power, potential and current transformers.

Q: How can you test a transformer?

A: Use a digital multimeter to check transformer operation. Set your digital multi-meter to AC volts, the next setting higher than 240 volts AC (on a lot of meters this is 600). Check voltage across the top center tap and either of the two top taps.

Q: What instrument is used to measure transformers?

A: The Winding Resistance & Turns Ratio Meter can be used by transformer manufacturers, electricity supply companies, and repair companies which carry out on-site measurements under unfavourable conditions.

Q: What type of test is required for transformers?

A: Measurement of impedance voltage/short circuit impedance (principal tap) and load loss (Short circuit test) Measurement of no-load loss and current (Open circuit test) Dielectric tests of transformer. Measurement of insulation resistance.

Q: What is the standard test of transformer?

A: These test includes Visual Inspection to visually inspect the transformer, Polarity Check to verify the correct polarity of the transformer windings and connections.

Q: How do you test an instrument transformer?

A: Using the indirect test method, a voltage signal is injected into the secondary winding and the CT parameters are measured. Based on the results, the CT's performance characteristics are calculated.

Q: Can you use a megger to test a transformer?

A: Countless industry professionals for its transformer testing and monitoring portfolio.

Q: How are current transformers tested?

A: The output voltage of a current transformer (CT) can be tested in the field using an digital multimeter with a millivolt AC (mVac) range. This test is useful to confirm that the CT is working properly and that current is flowing in the conductor that the CT is installed on.

Q: How to test a single phase transformer?

A: Choosing suitable instrument. Keeping the output voltage of the auto-transformer at zero, switch on the circuit.

We're professional transformer test equipment manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy transformer test equipment for sale here from our factory. For price consultation, contact us.

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