Products Description
Our automatic transformer tester uses one test connection for several transformer measurements. An internal three-phase sine-wave source supports true three-phase short-circuit impedance testing without an external regulator.
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 automatic transformer tester combines five transformer-test functions and reduces repeated rewiring. The internal three-phase source removes the need for an external three-phase regulator during impedance tests. Quantitative demagnetization reports initial and final residual-magnetism values. Grounding and incorrect 380 V connection protection improve field operating safety.
Operating Conditions
Install the product in a clean, ventilated location without corrosive gas, conductive dust, water ingress, severe vibration, or strong impact. Provide reliable protective grounding, maintain the required electrical clearances, and use the rated auxiliary power supply. Confirm ambient temperature, humidity, altitude, enclosure protection, cable routing, and communication conditions before production and installation.
Product Parameters
|
Parameter |
Details |
|
DC-resistance current |
Single phase 20/10/5/1/0.2 A; three phase 10+10/5+5/1+1 A |
|
DC-resistance accuracy |
±(reading×0.2% + 2 digits) |
|
Demagnetization |
±50 V; ≤10 A; residual range 0-99.99%; final effect ≤5% |
|
OLTC output / time |
2/1/0.5 A; transition time 0.1-350 ms |
|
Ratio range |
0.9-10000 |
|
Ratio accuracy |
0.1% to 500; 0.2% above 500 to 3000; 0.3% above 3000, each plus 2 digits |
|
Impedance input |
AC 50-850 V; AC 0.5-100 A |
|
Internal impedance source |
Three-phase; 0-220 V; 0-5 A; 50 Hz |
|
Power / environment |
AC 220 V ±10%, 50/60 Hz; -10°C to +50°C; ≤90% RH, non-condensing |
|
Size / weight |
610×440×320 mm / 20 kg without test leads |
Product Advantages
- The automatic transformer tester combines five transformer-test functions and reduces repeated rewiring.
- The internal three-phase source removes the need for an external three-phase regulator during impedance tests.
- Quantitative demagnetization reports initial and final residual-magnetism values.
- Grounding and incorrect 380 V connection protection improve field operating safety.
Main Applications
The automatic transformer tester is used for transformer factories, commissioning teams, maintenance groups, laboratories, and utility test departments.
It supports DC resistance, ratio, OLTC transition, impedance, and demagnetization work.
The instrument is useful when several tests must be completed during one outage window.
Components
|
Part |
Function |
|
Main test unit |
Generates test signals, measures responses, and calculates results. |
|
Three-phase internal source |
Supplies the impedance test without an external regulator. |
|
Test leads and safety ground |
Connect the transformer windings and protective earth. |
|
Touch interface and communication |
Controls tests, displays curves, and manages records. |
FAQ
Q: What information is needed for model selection?
A: Provide transformer connection, capacity, voltage, expected resistance, ratio, OLTC, and impedance-test requirements.
Q: What should be checked before installation?
A: Discharge and isolate the transformer, verify grounding, connect leads correctly, and follow the selected test sequence.
Q: How can the device or system be integrated?
A: The instrument supports wired and wireless interfaces together with the stated cloud-intelligence application.
Q: Which options should be confirmed before production?
A: Confirm test-lead set, current range, OLTC accessories, printer, transport case, and software needs.
Hot Tags: automatic transformer tester, China automatic transformer tester manufacturers, suppliers, factory
