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HF-TC-615 Transformer Energy Efficiency Tester
Transformer Energy Efficiency Tester accurately measures no-load loss, load loss and other electrical parameters of distribution transformers. It automatically calculates energy efficiency grades with stable test data, suitable for factory delivery inspection and on-site energy efficiency evaluation of power transformers.
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Transformer Energy Efficiency Tester is an all-in-one test instrument for 10kV distribution transformers. It can measure load loss, no-load loss, zero-sequence impedance and transformer capacity, and accurately identify energy efficiency grades of oil-immersed and dry-type transformers including amorphous alloy types. Equipped with built-in three-phase inverter power, harmonic analysis, data storage and printing functions, it supports single-phase and three-phase measurement, portable for factory inspection and field substation testing.
Product Features
- Load Loss MeasurementIt displays three-phase voltage, three-phase current and three-phase power, and automatically calculates the percentage of transformer impedance voltage, as well as load loss converted to rated temperature and rated current. It can automatically identify core types of oil-immersed and dry-type distribution transformers, with adaptive alarm prompts during testing for convenient field operation.
- No-load Loss Measurement The tester shows three-phase voltage, three-phase current, three-phase power and the distortion rate of applied power waveform. It automatically computes no-load current and waveform-distortion-corrected no-load loss under rated voltage, and displays core models of oil-immersed or dry-type distribution transformers.
- Energy Efficiency Grade MeasurementIt accurately measures and judges energy efficiency grades of 10kV distribution transformers. For oil-immersed transformers, it supports loss testing of S22 (electrical steel strip) and SH25 (amorphous alloy); for dry-type transformers, it covers SCB18 (electrical steel strip) and SCBH19 (amorphous alloy).
- Single-phase MeasurementSuitable for checking single-phase transformer defects or field sites without three-phase power supply. It records three groups of single-phase test data and calculates no-load current, no-load loss, impedance voltage and load loss according to different transformer connection groups.
- Zero-sequence Impedance MeasurementApplicable to transformers with star-connected high-voltage windings and neutral leads. It records zero-sequence impedance, zero-sequence reactance, zero-sequence inductance, impedance angle and zero-sequence resistance.
- Capacity MeasurementBuilt-in rechargeable lithium battery and three-phase sine-wave inverter power supply with auto-adjustable output voltage, soft start and soft stop functions. It measures transformer capacity and identifies model without external power, while displaying impedance voltage and load loss converted to rated temperature and rated current.
- Expandable Measuring RangeDirect measurement within the built-in range; external voltage and current transformers can be connected for extended range. The transformation ratio of external VT and CT can be set, and actual applied voltage and current values are displayed directly.
- Harmonic Analysis FunctionMeasures harmonic content ratio and total harmonic distortion rate, with original waveform and bar chart display.
- Large-screen LCD DisplaySimultaneously displays three-phase voltage, three-phase current, three-phase power, average three-phase voltage, average current, total three-phase power and other relevant data on one screen. Chinese menu and prompts deliver simple operation.
- Dual AC/DC Power SupplyAdaptively powered by built-in lithium battery or 220V AC charger.
- Intelligent Charging ManagementReal-time remaining power display, low battery alarm and automatic backlight adjustment for power saving.
- Non-volatile Clock & Multi-mode Data StorageBuilt-in clock with date display. Two storage modes: local storage for up to 200 test records (transferable to USB flash drive) and USB storage in editable Word format for PC editing and printing.
- Thermal Printing FunctionFast and silent on-site report printing.
- User-friendly Human-machine InterfaceReal-time USB connection status indicator on the top status bar; clear pop-up reminders when operating disconnected peripherals.
- Compact & Lightweight DesignSmall size and light weight for easy transportation and field use.
Technical Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Basic Measurement Accuracy | Voltage & Current: ±(0.2% of reading + 2 digits) Power (0.2≤cosφ≤1): ±(1.0% of reading + 2 digits) Capacity: ±(10% of reading + 2 digits) |
| 2 | Capacity Measuring Range | 30kVA ~ 65000kVA |
| 3 | Voltage Measuring Range | AC 50V ~ 850V |
| 4 | Current Measuring Range | AC 0.5A ~ 100A |
| 5 | Operating Temperature | -10℃ ~ 40℃ |
| 6 | Ambient Humidity | 10% ~ 85% |
| 7 | Storage Temperature | -20℃ ~ 50℃ |
| 8 | Overall Dimension | 320mm × 270mm × 145mm |
| 9 | Weight | 5kg (excluding test cables) |
Packing List – Transformer Energy Efficiency Tester
| No. | Item Description | Qty | Remarks |
|---|---|---|---|
| 1 | Transformer Energy Efficiency Tester Main Unit | 1 Set | Built-in battery and inverter power supply |
| 2 | Three-phase High Voltage Test Cables | 3 Pcs | Red / Yellow / Black |
| 3 | Three-phase Current Test Wires | 3 Pcs | With insulated terminals |
| 4 | Alligator Clip Connectors | 6 Pcs | For transformer wiring connection |
| 5 | 220V AC Power Charger | 1 Pcs | For battery charging |
| 6 | USB Data Cable | 1 Pcs | Data export and PC communication |
| 7 | Thermal Printer Paper Rolls | 2 Rolls | Spare printing paper |
| 8 | User Manual | 1 Copy | English version |
| 9 | Calibration Certificate | 1 Copy | Factory test report |
| 10 | Portable Hard Carry Case | 1 Pcs | Shockproof and dustproof |
Transformer Energy Efficiency Tester – Functions
Core function: Test transformer loss, judge energy efficiency grade and measure rated capacity, complying with national and IEC standards.
Main Functions
- No-load test: Measure core loss and no-load current to detect core defects.
- Short-circuit test: Measure winding copper loss and impedance voltage, calibrate loss under reference temperature and find winding faults.
- Blind capacity measurement: Calculate actual rated capacity without nameplate to identify unqualified transformers.
- Energy efficiency evaluation: Automatically compute total loss and efficiency, classify Grade 1/2/3 energy efficiency and output standard test reports.
- Auxiliary tests: Three-phase electrical parameters, harmonic and zero-sequence impedance test; some models integrate DC resistance and transformation ratio measurement.
Application Scenarios
- Manufacturers: Factory inspection, energy efficiency certification and process optimization
- Power grids: Acceptance of new transformers & screening of old high-loss equipment
- Testing laboratories: Energy-saving supervision and official certification tests
- Factories & new energy stations: Preventive tests and energy-saving renovation evaluation
Key Values
Control equipment quality, block high-energy-consumption transformers, predict electrical faults, meet energy conservation regulations and cut power loss.
FAQ for Transformer Energy Efficiency Tester
Q1: What is a Transformer Energy Efficiency Tester used for?
A1: It conducts no-load and short-circuit tests on transformers, measures core loss and copper loss, calculates efficiency, judges energy efficiency grade and detects actual rated capacity, for factory inspection, grid acceptance and routine maintenance.
Q2: Which types of transformers can this tester test?
A2: It fits oil-immersed distribution transformers, dry-type transformers and amorphous alloy transformers, widely used in power grid, industrial plants and new energy power stations.
Q3: Can it test transformers without a clear nameplate?
A3: Yes. It supports blind capacity measurement to calculate the real rated capacity via loss data, identifying fake or non-standard transformers.
Q4: Does the equipment automatically calibrate temperature influence on loss values?
A4: Yes. It converts measured winding loss to standard reference temperature values as per IEC and GB standards to ensure accurate energy efficiency judgment.
Q5: What energy efficiency grades can it identify?
A5: It automatically calculates total loss and efficiency, distinguishes Grade 1, Grade 2 and Grade 3 energy-saving transformers, and generates formal test reports.
Q6: What auxiliary test functions does it have?
A6: It measures three-phase voltage, current, power and harmonic distortion; partial models integrate DC resistance and transformation ratio test functions.
Q7: Who are the main users of this tester?
A7: Transformer manufacturers, power supply bureaus, third-party testing institutions, industrial enterprises, photovoltaic and wind power projects.
Q8: Can test reports be printed and saved?
A8: Yes. Test data can be stored locally, exported and printed, which meets requirements for energy efficiency certification and official acceptance filing.
Q9: What hidden faults can be found through testing?
A9: Abnormal core loss reflects loose silicon steel sheets or core short circuit; abnormal copper loss indicates winding short circuit, poor contact or unbalanced three-phase windings.
Q10: Does the tester comply with international testing standards?
A10: It conforms to IEC 60076 and national GB 20052 energy efficiency standards, supporting export certification and domestic power grid inspection.
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