Fully Automatic Transformer Ratio Tester

Product Introduction

This tester is a cutting-edge product that addresses the limitations of conventional transformer ratio bridge testing. It has a high-resolution LCD display with a large screen and is powered by a lithium battery, making it convenient for field use.
The product is mainly utilized for transformer ratio and group testing, along with PT and CT ratio and polarity testing, providing rapid testing speeds and high precision.

Product Parameter (specification)

1. Range	0.9 to 10000
2. Accuracy	2.1 Measurement value ≤ 500;±(reading × 0.1% + 2 digits) 2.2 Measurement value 500 to 3000;±(reading × 0.2% + 2 digits) 2.3 Measurement value > 3000;±(reading × 0.3% + 2 digits)
3. Resolution	3.1 0.9~9.9999;0.0001 3.2 10~99.999;0.001 3.3 100~999.99;0.01 3.4 1000~9999.9;0.1 3.5 10000 and above;1
4. Power Supply	Built-in lithium battery or external charger; charger input 100~240VAC, 50Hz/60Hz
5. Charging Parameters	5.1 Charging Voltage;8.4V 5.2 Charging Current;≤2A 5.3 Charging Time;Approx. 3 hours 5.4 Operating Time;Greater than 8 hours
6. Main Unit Weight	3.8kg (excluding test leads)
7. Main Unit Dimensions (L×W×H)	325mm×225mm×125mm
8. Operating Temperature	-10℃~50℃
9. Relative Humidity	≤90%, non-condensing

Product feature and application

Can be adapted for use with a lithium battery or a 220V AC power supply. With a straightforward and user-friendly testing procedure, a single charge allows for the continuous testing of more than 100 transformers regarding turns ratio and connection group.
Offers the ability to conduct longitudinal tap winding tests, enabling turns ratio and connection group evaluations even when the high/low voltage connection setup is not known.
Functionality has been broadened beyond that of conventional transformers, Z-type transformers, and PT testing to include CT ratio and polarity testing, thereby expanding the range of possible applications.
Wide measurement range and high precision: ratio measurements can reach up to 10,000, with guaranteed accuracy of 0.3% at the maximum value of 10,000.
Comprehensive protection features, including reverse connection and output short-circuit protection.
The 5.6-inch high-brightness color LCD screen, designed for industrial use, guarantees visibility clarity even in intense sunlight.
Furnished with a thermal printer for easy data printing.
Compatible with internal storage as well as USB storage, facilitating the review of historical data and the uploading of data.

Prodection details

Transformer (conventional, Z-type, single-phase/three-phase) turns ratio and group designation testing;
PT (voltage transformer) turns ratio and polarity testing;
CT (current transformer) turns ratio and polarity testing.

Company Qualifications

FAQ

1)In what scenarios is the blind test function of the MEBC-WE tester applicable? How do you operate and initiate it?

Answer: The blind test function is applicable when the high/low voltage connection configuration and connection group of the device under test (transformer, PT, CT, etc.) are unknown. It accurately measures the turns ratio and connection group. Operation steps: 1. After completing wiring, turn on the power and enter the main menu; 2. Select the corresponding function: "Three-Phase Test," "Single-Phase Test," or "Z-Type Test"; 3. Locate the "Blind Test Function," set parameters such as test item number, rated high/low voltage, tap position, etc. (Connection group is fixed as 'Auto'); 4. Move the cursor to "Start Measurement" and press the "Confirm" key to initiate the test.

2)What indication does the MEBC-WE tester provide when the printer is out of paper? How to replace the paper?

Answer: When the printer is out of paper, the integrated indicator light will flash (the light remains steady during normal operation). Steps to replace the paper: 1. Pull out the printer's rotating lever and open the paper compartment cover; 2. Load the paper, pulling a section beyond the tear bar. Ensure the smooth side (the side with the chemical solution) faces upward; 3. Close the paper compartment cover. Align the print head's paper feed shaft with the paper, then press the print head firmly back into place; 4. Push the rotating lever back to reset it, completing the paper replacement.

3)How should the battery be maintained when the MEBC-WE tester is not in use for extended periods? Can the instrument be used normally while charging?

Answer: Maintenance requirements for long-term non-use: 1. Turn off the power promptly; 2. Charge and discharge the battery at least once a month to prevent deep discharge (immediately shut down and charge when low to avoid battery failure); 3. Do not disassemble or replace the battery yourself. Return the unit to the factory for repairs. The instrument can be used normally while charging. The charger indicator will be red during charging and turn green when fully charged. A single charge takes approximately 3 hours and allows continuous testing of over 100 transformers.

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