Fully Automatic Ratio and Connection Group Tester

Product Introduction

Measuring transformer turns ratio using a ratio bridge involves cumbersome procedures and a narrow measurement range, failing to meet the demands of modern measurement for speed and efficiency. To address this, our company has developed the next-generation MEBC-WII Fully Automatic Turns Ratio and Group Tester using modern electronic technology. It features a compact size, lightweight design, high precision, and excellent stability. Equipped with a large-screen Chinese character display and menu-driven operation, it offers a user-friendly interface. Both turns ratio and connection group can be measured in a single operation. This instrument is an ideal testing solution for the power industry.

Product Parameter (specification)

Turns ratio measurement range	1–10000
Connection group	1–12 points
Accuracy	1–1000;Class 0.2; 1000–10000Class 0.5
Power supply	AC220V ±10%, 50Hz
Operating ambient temperature	-5°C to 40°C
Operating ambient humidity	<85%
Dimensions	430×320×215mm³
Weight	8kg

Product feature and application

1. Automatically measures connection group.

2. Automatically performs group conversion.

3. Automatically switches phase sequence.

4. Automatically switches measurement range.

5. Automatically calibrates the meter.

6. Automatically calculates relative error after inputting standard turns ratio.

7. Automatically disconnects test voltage upon completion of measurement.

8. Automatically saves configuration data and measurement results; historical data can be reviewed.

9. For on-load transformer measurement, only one transformer ratio needs to be input.

Prodection details

Suitable for the power industry sector, this device is used for transformer turns ratio and group identification testing. It verifies the consistency between the turns ratio and the nameplate specifications, checks the tap changer position, measures the coil turns ratio, detects interturn short circuits, and assesses three-phase turns ratio imbalance. It provides the basis for transformer parallel operation.

Company Qualifications

FAQ

1)When wiring the MEBC-WII Fully Automatic Turns Ratio and Connection Group Tester, does the transformer's neutral point need to be connected to the instrument or to ground?

Answer: No. During wiring, the transformer's neutral point should not be connected to either the instrument or ground. However, ensure the instrument is properly grounded. Also, never reverse the high and low voltage connections of the transformer.

2)How can historical measurement data be viewed after completing a measurement with the MEBC-WII Automatic Turns Ratio and Connection Group Tester?

Answer: After completing the measurement, return to the main menu. Press the "↑" key to select the "View Historical Data" function menu, then press the 'Confirm' key to view. Additionally, each measurement is automatically saved. Pressing the "↑" key on the measurement result display screen also allows direct page-by-page viewing of historical data.

3)What should be done if the LCD display becomes disordered or buttons become unresponsive during operation of the MEBC-WII Automatic Turns Ratio and Connection Group Tester?

Answer: If this occurs, first press the instrument's reset button. If the issue persists, turn off the instrument's power and restart it, then proceed with measurements following the normal operating procedure.

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