Hz-3310b 10A 3 Phase Transformer DC Winding Resistance Measuring Device

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Hz-3310b 10A 3 Phase Transformer DC Winding Resistance Measuring Device

Customization:	Available
After-sales Service:	Yes
Warranty:	1 Years

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Product Description

Basic Specifications

Model NO.	HZ-3310B	Type	Transformer DC Winding Resistance Tester
Accuracy Grade	0.5	Measurement Accuracy	± (0.2%+2)
Output Current	20A	Display	7-inch Digital Color Touch Screen
Work Power	110V-400V Adjustable	Power Source	AC220V ±10%
Dimensions	350216226mm	Weight	10.8kg

Product Description

The Transformer DC Resistance Tester is a mandatory test item for semi-finished products and finished products factory tests, installation and handover tests, and preventive tests within the power department. It effectively detects defects in material selection, loose welding, missing strands, and broken wires in transformer coils.

This tester integrates Three-Phase simultaneous testing, Magnetic Augment Function, and Degauss Function into one compact body. It greatly shortens the test period for power transformers by measuring three-phase resistance and unbalance rates simultaneously.

Functional Characteristics

✔ Three-Phase Synchronous Test: Measures three-phase DC resistance of star-connected windings and calculates unbalance rates automatically.

✔ Magnetic Augment Circuit: Specifically designed for large transformers with five-leg cores and low-voltage delta connections.

✔ Material Compensation: Set winding material (copper or aluminum) to automatically adjust for conversion temperature coefficients.

✔ Advanced Protection: Complete protection circuit with a sound discharge alarm to ensure operator safety.

✔ Data Management: Equipped with RS232 and USB ports; saves up to 100 groups of data.

Technical Indicators

Test Mode	Current Range	Measurement Range
Three-phase test	5A+5A / 1A+1A / 200mA+200mA / 20mA+20mA	2mΩ ~ 200Ω
Single-phase test	10A / 5A / 1A / 200mA / 20mA	1mΩ ~ 20KΩ
Minimum resolution		0.1μΩ
Operating temperature		-10°C ~ 40°C

Product Display & Applications

FAQ

What are the primary uses of this DC resistance tester? It is used for factory testing of semi-finished and finished transformers, installation handover tests, and preventive maintenance to detect loose connections, broken wires, or welding defects in transformer coils.

How does the three-phase simultaneous test benefit the user? This function allows for simultaneous power-on and sampling of all three phases, which significantly reduces test time and automatically calculates the unbalance rate, improving overall efficiency.

Can this device handle large five-leg core transformers? Yes, the tester features an HV & LV series excitation mode and a magnetic augment circuit specifically designed to quickly and accurately measure low-voltage windings in large transformers.

Is the tester suitable for outdoor use? The device is housed in a durable industrial plastic case for portability. While it can be used outdoors, it should be protected from rain, corrosive gases, and extreme dust.

Does the device support data export for reporting? Yes, it is equipped with a USB port for U-disk data transfer and an RS232 communication port for connecting to a computer for background data management.

What safety features are integrated into the unit? The tester includes a complete protection circuit and a specialized sound alarm for discharge. Operators must wait for the discharge alarm to stop before removing any test leads.

Hz-3310b 10A 3 Phase Transformer DC Winding Resistance Measuring Device

Product Description

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