Product Overview
The High Voltage Series Resonant Test System for Power Transformer Testing is designed for specified AC withstand voltage tests on compatible power transformers and related high-voltage electrical equipment.
Transformer testing requirements vary according to rated voltage, transformer capacity, insulation design, winding arrangement, test connection, and applicable standards. The test system must therefore be selected according to the actual transformer specifications rather than rated voltage alone.
The variable-frequency series resonant method uses an adjustable high-voltage reactor and the capacitance of the test object to establish resonance. A suitable configuration can generate the required AC test voltage while limiting the input power needed to compensate for reactive power.
The system can be supplied with a variable-frequency power supply, excitation transformer, high-voltage reactor, capacitive voltage divider, control system, and associated measurement accessories.
Key Features
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Configurable output voltage and capacity.
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Variable-frequency resonance control.
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Reactor combinations for compatible transformer test requirements.
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Digital voltage monitoring and test parameter recording.
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Configurable overvoltage and overcurrent protection.
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Suitable for transformer manufacturers and laboratory environments.
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Optional automation and data management functions.
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Customized engineering based on transformer parameters.
Testing Functions
AC Withstand Voltage Testing
Supports specified AC withstand tests on compatible transformer insulation systems.
Transformer Test Configuration
The system configuration can be reviewed against transformer capacitance, required voltage, test connection, and the applicable test procedure.
Voltage and Frequency Regulation
The control system adjusts frequency to establish resonance and regulate the test conditions within the equipment's operating range.
Test Duration Monitoring
The configured system can monitor the duration of the test and record relevant operating data.
Test Documentation
Depending on the selected software and measurement configuration, test data can be saved for quality assurance and engineering review.
Typical Applications
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Power transformer manufacturing plants
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Distribution transformer manufacturers
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Large power transformer testing facilities
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Transformer type-test laboratories
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Electrical equipment research institutions
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Utility acceptance testing departments
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High-voltage maintenance and testing organizations
Customer Pain Points
Challenge 1: Transformer capacitance varies by design.
We can evaluate the transformer parameters and required test conditions to determine whether the proposed reactor configuration is suitable.
Challenge 2: A test system must accommodate several transformer models.
The proposed system can be reviewed for multiple test configurations, subject to the voltage, current, capacitance, and capacity limits of each setup.
Challenge 3: Test parameters need to be documented.
A compatible measurement and control system can record available test parameters for documentation and subsequent analysis.
Challenge 4: The laboratory needs a complete equipment package.
The supply scope can be defined to include the resonant test circuit, voltage measurement, control system, connection accessories, and other agreed components.
Frequently Asked Questions
Q1: Can a series resonant system test large power transformers?
Yes, if the system is properly configured for the transformer capacitance, required test voltage, operating frequency, and test procedure.
Q2: Is series resonance suitable for every transformer test?
No. Suitability depends on the specific test, transformer characteristics, and applicable standards. Other testing methods may be required for other transformer tests.
Q3: What transformer parameters should we provide?
Provide rated voltage, transformer type, relevant capacitance data if available, required AC test voltage, test connection, duration, and applicable standard.
Q4: Can one system test different transformer capacities?
Potentially, provided the required test conditions for each transformer fall within the system's design limits.
Q5: Can you supply the complete control and measurement system?
Yes, the control and measurement scope can be discussed and included in the quotation according to the selected configuration.
Q6: Can the equipment be customized for a transformer factory?
Yes. The configuration can be developed around the factory's test program, transformer range, available space, and operating requirements.
Obtain a Transformer Testing Proposal
Contact our engineering team with your transformer specifications and required test parameters. We can evaluate the appropriate system capacity, reactor combination, measurement configuration, and project scope.
