DC Winding Resistance Tester Transformer Meter

The MOEORW-W4610A30 DC Winding Resistance Tester is a high-precision, rapid-testing instrument designed for measuring the DC resistance of transformers, mutual inductors, generators, and motors. As a premium upgrade to traditional single and double-arm bridges, this tester is vital for quality control, factory clearance testing, installation, handover trials, and preventive maintenance in the power sector. It effectively detects manufacturing flaws and operational hazards such as poor material selection, defective welding, loose joints, missing strands, and broken wires within transformer coils.

Technical Parameters

Physical & Environmental Specifications

Dimensions: 330mm × 285mm × 150mm

Weight: 4.1kg (Host unit)

Operating Temperature: -10°C to 50°C

Ambient Humidity: ≤ 85%RH (Non-condensing)

Power Supply: AC 200-240V ~ 50/60Hz, 2.5A

Wide Range & High Resolution: Offers multiple selectable current levels ranging from ≤10mA up to 10A to match various testing environments.

Smart Blind Testing: Features an automatic testing mode ("Auto" gear) for simplified operations without manual range adjustment.

7-Inch Color Touchscreen: Equipped with a high-brightness, daylight-visible LCD display featuring a user-friendly HMI.

Robust Circuit Protection: Built-in advanced protection circuits with clear alert indicators to prevent damage from misoperation.

Data Management & Connectivity: Integrated RS232 serial port and Bluetooth module allow effortless data uploads and remote app control via QR code scanning.

Massive Storage & Export: Internal non-volatile memory stores up to 512 data sets, supporting direct USB flash drive export (FAT32 format).

On-site Printing: Built-in thermal printer enables instant physical copies of real-time or historical test results.

Rugged & Portable: Highly precise, anti-interference, shockproof, and exceptionally easy to carry for field operations.

The MOEORW-W4610A30 is an essential diagnostic tool used globally across electrical grids, manufacturing plants, and industrial testing environments:

Transformer Manufacturing: Ideal for semi-finished and finished product factory exit inspections.

Substation Commissioning: Crucial for installation, hand-over tests, and preventive maintenance checks.

Power Asset Auditing: Detects coil anomalies in power transformers, instrument transformers (CT/PT), large generators, and industrial motors.

Field Engineering Solutions: Solves common field-testing challenges like power grid interference and high ambient humidity.

The structural layout of the MOEORW-W4610A30 is optimized for logical and safe operations:

Front Panel Components: Features a built-in printer (1), color touchscreen display (3), serial communication port (6), and USB flash drive port (7).

Four-Terminal Wiring Design: Utilizes dedicated color-coded terminals (I+, I- for current output; V+, V- for voltage input) implementing the Kelvin four-wire method to eliminate lead wire resistance and guarantee measurement accuracy.

Safety Interfaces: Dedicated ground terminal (4), AC power socket (5), and heavy-duty power switch (8).

1 × MOEORW-W4610A30 Host Unit

1 × Premium Red & Black Heavy-Duty Test Lead Kit (with Kelvin Clamps)

1 × AC Power Cord

1 × Grounding Cable

1 × Product Instruction Manual & Quality Certificate

To ensure the longest service life and absolute operator safety, always adhere to the following best practices:

Read Before Use: Carefully review the instruction manual before operating the device.

Secure Contacts: Ensure flawless contact with the test clamps; strictly prohibit moving the test clamps during an active measurement cycle.

Complete Discharge: Wait for the tester to finish its automatic discharge process (accompanied by a buzzer sound) before turning off the power or removing any test leads.

Anomaly Reset: If any unexpected system freeze or error occurs during testing, simply power off and restart the device to reset.