Top 5 Electrical Testing Equipment Manufacturers in China 2026

2026-10-12

Electrical testing equipment is widely used in transformer manufacturing, substation commissioning, power-system maintenance, relay protection, and high-voltage testing. As testing projects become more specialized, buyers need to look beyond a single specification and consider test coverage, measurement functions, automation, portability, and overall equipment configuration.

China has a broad electrical testing equipment market, covering manufacturers with different technical focuses. Some concentrate on CT/PT and relay protection testing, while others provide transformer test systems, high-voltage equipment, insulation testers, and related power-system instruments.

This article reviews five China tester manufacturers in 2026, focusing on their main testing fields, representative equipment, and the applications their product ranges are designed to support.

What to Consider When Choosing a China Tester Manufacturer

The right manufacturer depends on the type of equipment being tested and how the tester will be used. A substation testing team may need portable CT/PT and relay test equipment, while a transformer factory may require an integrated system covering several routine tests.

When comparing manufacturers, it is useful to focus on:

CT/PT testing capabilities
Transformer testing coverage
High-voltage and insulation testing
Relay protection testing
Portable and integrated equipment
Automation and data management
Application-specific configurations

With these factors in mind, the following five manufacturers cover different areas of the China tester market.

Kvtester Electronics Technology Co., Ltd.

Kvtester provides electrical testing equipment for power-system applications, with product coverage including CT/PT testing, transformer testing, relay protection, high-voltage testing, insulation and grounding, cable fault locating, and other related applications.

The product range includes both portable instruments and integrated testing systems. This gives users more flexibility when their testing requirements range from individual measurements to multiple tests on the same power equipment.

CT/PT and transformer testing

CT/PT testing is one of the main application areas. The CTA-1000C CT/PT Analyzer is designed for CT and PT testing in field and maintenance applications, while other systems in the range provide broader testing configurations.

For transformer manufacturers, the requirements are usually more extensive. The ZC-200 Transformer Comprehensive Test System, in its 5 MVA/22 kV configuration, covers:

No-load and load testing
Power-frequency withstand voltage
Induction withstand voltage
Winding resistance
Voltage ratio and connection group testing

The exact test scope varies with the selected ZC-200 configuration, so the transformer capacity, voltage level, and required test items should be confirmed before selection.

Relay and high-voltage testing

The product range also extends to relay protection and high-voltage testing. For example, the ZCAR-1600C protective relay tester provides six-phase voltage and six-phase current output and supports automated relay protection testing.

This broader product structure is useful when one testing department needs equipment for several stages of power-equipment inspection rather than a single dedicated tester.

HV Hipot Electric Co., Ltd.

HV Hipot focuses on high-voltage electrical testing, covering transformer testing, CT/PT analysis, cable testing, insulation testing, partial discharge, relay protection, and related high-voltage applications.

Its equipment range extends from individual diagnostic instruments to larger testing systems. This makes the manufacturer relevant to testing projects where several high-voltage procedures need to be performed within the same workflow.

Transformer and high-voltage testing

Transformer testing is an important part of the product range. The GDBT Series Transformer Test Bench supports transformer tests such as no-load and load testing and can integrate additional test functions depending on the configuration.

The broader range also includes equipment for:

AC/DC withstand testing
Partial discharge testing
Cable testing
CT/PT testing
Insulation testing
Transformer oil testing

This combination is suited to testing environments where transformer diagnostics are performed alongside other high-voltage procedures.

CT/PT testing for field work

For CT/PT testing, the equipment range covers functions such as ratio, polarity, winding resistance, excitation characteristics, and burden measurements.

This makes the product portfolio relevant to commissioning and maintenance work where instrument transformers need to be tested together with other high-voltage equipment.

Huazheng Electric Manufacturing (Baoding) Co., Ltd.

Huazheng provides a wide selection of electrical testing equipment covering transformer testing, CT/PT analysis, relay protection, insulation resistance, high-voltage testing, cable fault locating, transformer oil testing, and related applications.

The product structure places considerable emphasis on individual testing instruments, allowing users to build an equipment portfolio around specific testing requirements.

CT/PT and transformer measurement

The HZCT-100C CT/PT Analyzer is designed for CT and VT testing. Its specified CT ratio range is 1–40,000, with a CT ratio accuracy of ±0.05%. It also supports functions such as winding resistance and burden measurement.

Beyond CT/PT testing, Huazheng provides dedicated equipment for transformer ratio testing, winding resistance, insulation resistance, dielectric loss, and other transformer measurements.

This approach can be practical for maintenance teams or laboratories that need to add testing functions individually rather than install a complete testing system at once.

Expanding the testing setup

A testing program often grows as equipment responsibilities increase. For this reason, the availability of related instruments can be important when selecting a manufacturer.

Huazheng’s product range also covers:

Relay protection testing
High-voltage testing
Insulation resistance testing
Partial discharge testing
Cable fault location
SF6 testing
Transformer oil testing

The result is a broad equipment portfolio that can support different testing tasks within power-system maintenance and manufacturing.

KINGSINE Electric

KINGSINE has a more specialized focus on power-system protection and electrical measurement. Its main product areas include protection relay test sets, CT/PT analyzers, reference power sources, calibrators, voltage and current amplifiers, and electricity monitoring equipment.

Rather than concentrating primarily on transformer test benches or high-voltage systems, its product structure is closely connected with protection and measurement applications.

Relay protection and CT/PT testing

Relay protection testing is a central part of the equipment range. The testers are designed for applications such as:

Protection relay commissioning
Secondary injection testing
Relay maintenance
CT/PT testing
Electrical measurement

The CT/PT analyzer range complements the relay testing equipment by covering instrument-transformer testing.

KINGSINE also provides reference sources and calibration equipment, extending its applications into electrical measurement verification.

Where this equipment fits

This product focus is particularly relevant to testing departments whose daily work centers on protection systems and secondary circuits.

For these applications, important selection factors include:

Number of current and voltage channels
Output capability
Protection relay test functions
Automatic test sequences
Software support
Data recording and reporting

ELECGENE

ELECGENE provides electrical testing and diagnostic equipment for power-system applications, with product areas covering CT/PT testing, transformer testing, insulation, relay protection, and related electrical measurements.

Its portfolio combines portable testing instruments with equipment for broader power-system diagnostics.

CT/PT testing with the TCT-200F

The TCT-200F CT/PT Analyzer supports CT and PT testing, including ratio, polarity, winding resistance, excitation characteristics, knee-point analysis, and burden-related measurements.

Its specified CT ratio range is 1–40,000 with ±0.05% accuracy. The unit provides up to 180 Vrms output, 12 Arms, and 36 A peak current, with a weight of approximately 9.5 kg excluding measuring cables.

These specifications make it suitable for applications where several CT/PT tests need to be performed using one portable instrument.

Transformer and protection testing

The product range also includes transformer turns-ratio testers and relay protection equipment.

Its transformer testing products cover applications involving power, distribution, instrument, and dry-type transformers, allowing the equipment portfolio to extend beyond CT/PT testing.

China Tester Manufacturers Compared

The five manufacturers differ mainly in their testing focus and equipment structure.

Manufacturer	Main Testing Focus	Equipment Approach	Typical Applications
Kvtester	CT/PT, transformer, relay, high voltage	Portable + integrated systems	Transformer factories, utilities, commissioning, maintenance
HV Hipot Electric	High voltage, transformer, CT/PT, cable	Portable + system-level equipment	High-voltage testing, transformer testing, field service
Huazheng	Transformer, CT/PT, relay, insulation, HV	Dedicated testing instruments	Maintenance, laboratories, manufacturing
KINGSINE	Relay protection, CT/PT, calibration	Specialized test equipment	Protection testing and electrical measurement
ELECGENE	CT/PT, transformer, relay, insulation	Portable + diagnostic equipment	Field testing and power-system maintenance

This comparison also shows why product quantity alone is not enough when choosing a China tester manufacturer.

The same testing department may need completely different equipment depending on whether it works mainly with transformers, instrument transformers, relay protection systems, or high-voltage equipment.

How to Choose the Right China Tester

Once the testing application is clear, the selection process becomes much simpler. Instead of comparing every available specification, focus on the functions that directly affect the test procedure.

Match the tester to the test object

For CT/PT testing, check whether the equipment supports the required combination of:

Ratio testing
Polarity testing
Winding resistance
Excitation characteristics
Knee-point analysis
Burden measurement
Accuracy evaluation

For transformer testing, the test scope may include:

Turns ratio
Winding resistance
No-load and load tests
Insulation
Dielectric loss
Short-circuit impedance
Withstand voltage
Temperature-rise testing

The important point is to match the equipment with the complete test procedure rather than selecting it based on one maximum specification.

Consider field or factory use

The working environment has a direct impact on equipment selection.

For field testing, pay attention to:

Equipment weight
Battery operation
Test-lead connections
Display and controls
Automatic test sequences
Data storage
Report generation

For factory testing, system integration, test capacity, automation, repeatability, and safety interlocks may become more important.

Think about future testing requirements

Testing responsibilities can change over time. A team that initially needs CT/PT testing may later add transformer, insulation, relay, cable, or high-voltage testing.

For this reason, it can be useful to consider the manufacturer’s wider product range before making a purchase. However, each model should still be checked individually for its exact test functions, voltage level, accuracy, and configuration.

Which China Tester Fits Your Testing Work?

The five manufacturers reviewed in this article have different product structures.

Kvtester combines CT/PT, transformer, relay protection, high-voltage, and insulation testing equipment, with both portable instruments and integrated systems.

HV Hipot Electric focuses strongly on high-voltage and transformer testing while also covering CT/PT, cable, insulation, and related applications.

Huazheng provides a broad selection of dedicated instruments for transformer, CT/PT, relay, insulation, and high-voltage testing.

KINGSINE has a more specialized focus on relay protection, CT/PT analysis, calibration, and electrical measurement.

ELECGENE combines CT/PT and transformer testing with relay protection and other power-system diagnostic equipment.

The right choice depends on the equipment being tested, the required test items, the working environment, and whether the testing system needs to expand in the future.

Conclusion

China’s electrical testing equipment market covers a wide range of applications, from CT/PT analysis and relay protection to transformer and high-voltage testing.

The five manufacturers reviewed here provide different approaches to electrical testing equipment. Some offer broad product portfolios covering several power-system applications, while others focus more closely on relay protection, CT/PT analysis, transformer testing, or high-voltage equipment.

When comparing China tester manufacturers in 2026, it is more useful to look at the complete testing workflow than to focus on a single specification. Test coverage, measurement requirements, automation, portability, system integration, and future expansion all deserve consideration before selecting the equipment.