Products Description
Our transformer ratio tester uses a programmable internal source to output single-phase, two-phase, three-phase, or high-frequency signals. It supports standard and special transformer connections without manual parameter entry.
Technical Principle
The tester applies a controlled test voltage to the transformer windings and measures the corresponding secondary response. Automatic calculation determines turns ratio, ratio error, polarity, and vector group, with phase-by-phase results stored for review.
Product Features
The transformer ratio tester automatically measures three-phase ratio and connection group without manual setup. It supports standard Y, D, and Z connections plus rectifier and Scott transformer arrangements. Vector diagrams and waveform views make primary-secondary phase relationships easier to review. Battery operation and compact size support field tests without nearby mains power.
Operating Conditions
The product shall be installed and operated within the ratings stated in the technical parameters. Key site requirements include: Operating temperature; Relative humidity; frequency signals. It supports standard and special transfo. Keep the installation area clean, adequately ventilated, free from corrosive gas and severe vibration, and provide the specified grounding, clearance, and power quality.
Product Parameters
|
Parameter |
Details |
|
Ratio range |
0.5-20000 |
|
Ratio accuracy |
0.1% at 0.8-5000; 0.2% at 5001-20000 |
|
Selectable input voltage |
160 V, 80 V, 40 V, 24 V, or 12 V |
|
Mains supply |
AC 220 V ±15% |
|
Optional battery |
9.0-12.6 VDC, 2600 mAh; about 4 h continuous operation |
|
Operating temperature |
-10°C to +50°C |
|
Relative humidity |
≤90% RH |
|
Size |
270×190×70 mm, Type A |
|
Weight |
2 kg without test leads |
|
Storage |
128 MB, expandable with 4 GB card; USB export |
Product Advantages
- The transformer ratio tester automatically measures three-phase ratio and connection group without manual setup.
- It supports standard Y, D, and Z connections plus rectifier and Scott transformer arrangements.
- Vector diagrams and waveform views make primary-secondary phase relationships easier to review.
- Battery operation and compact size support field tests without nearby mains power.
Main Applications
The transformer ratio tester is used for transformer production tests, commissioning acceptance, preventive maintenance, and fault diagnosis.
It can also test PT and CT ratio and polarity in the stated applications.
The instrument suits standard power transformers and special connection groups.
Components
|
Part |
Function |
|
Handheld main unit |
Generates test signals and calculates ratio, group, and error. |
|
Three-phase signal source |
Excites standard and special transformer connections. |
|
Test leads |
Connect primary and secondary winding terminals. |
|
Storage and printing interfaces |
Save, export, or print the test record. |
FAQ
Q: What information is needed for model selection?
A: Provide transformer voltage ratio, connection group, tap positions, special winding form, and test environment.
Q: What should be checked before installation?
A: Isolate and discharge the transformer, identify terminals, connect all phases correctly, and verify grounding.
Q: How can the device or system be integrated?
A: USB export, optional Bluetooth or serial printing, and computer upload support test-record handling.
Q: Which options should be confirmed before production?
A: Confirm lead set, optional battery, printer, memory card, case, and software accessories.
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