Three Phase Transformer DC Winding Resistance Tester

Product Description

Product Overview:

The Transformer DC Resistance Tester is a mandatory test item for semi-finished products and finished products factory test, installation and handover test, and preventive test of the power department in the transformer manufacture industry. It can be used to effectively detect the defects in poor material selection, loose welding and connection parts, missing strands and broken wires of the transformer coil, as well as the operation hidden dangers. In order to meet the requirements of rapid measurement of transformer DC resistance, a large-scale power transformer DC resistance rapid tester integrated with Three-Phase simultaneous test function, Magnetic Augment Function, and Degauss Function into one body has been developed in our company. The tester has the functions of three-phase simultaneous power-on, independent current and voltage sampling, simultaneous measurement and display of three-phase resistance and three-phase unbalance rate, so as to greatly shorten the test period of transformer DC resistance and solve the problems about long time consumption for DC resistance measurement of each tap winding in power transformers.
 

Characteristics:

1. The tester can select corresponding output current value according to test products, and is mainly suitable for measuring the inductive DC resistance on transformers;
2. On large transformers with a five-leg core and low-voltage windings connected in delta, the tester can be used for the test in HV & LV series excitation mode. The magnetic augment circuit of the windings can be automatically connected in the tester, to quickly and accurately test the DC resistance of the low-voltage windings;
3. The tester has a Three Phases Test function to measure the three-phase DC resistance of the star-connected windings synchronously and calculate the three-phase unbalance rate automatically, so as to greatly reduce the measurement period and improve the test efficiency. Its phase by phase test function can also be used for phase by phase test on transformers with YN and D (Y) connections;
4. The winding material can be set according to the winding material of the transformer, such as copper or aluminum, to distinguish the conversion temperature coefficient of different materials.
5. The tester is equipped with transformer YN winding neutral point lead line resistance detection function, can make three-phase test data closer to the single-phase test value.
6. The tester is equipped with transformer degaussing function, can effectively help the transformer to reduce the residual magnetic.
7. The tester has a complete protection circuit and sound discharge alarm, to inform the clear discharge indication and reduce the misoperation;
8. The tester is equipped with a 7-inch color touch screen. to display the test data clearly in real-time;
9. The tester has Chinese and English operation interfaces, which can be configured according to the user requirements
10. The tester is equipped with a RS232 communication port, to transmit the test data to the background, with the control software in the host computer;
11. The tester is equipped with a USB port, to transfer test data into a U disk;
12. The tester has a built-in calendar and clock, as well as saving ( save 100 groups of data), review, and printing functions of test data;
13. The tester has more complete parameter settings, including test windings, Tapping Positions, test phases, Tested Sample Temperature, Conversion Temperature and others of the transformers;
14. The tester is equipped with an industrial plastic case which ensures its good portability and improves its service life.

Technical parameters:

1.Output current:
Three-phase test: 5A+5A; 1A+1A; 200mA+200mA; 20mA+20mA;
Single-phase test: 10A; 5A; 1A; 200mA; 20mA;
2.Measurement range:
Three-phase test: 5A+5A: 2mΩ~1.2Ω;1A+1A: 10mΩ~6Ω;200mA+200mA: 100mΩ~30Ω;20mA+20mA: 10Ω~200Ω;
Single-phase test: 10A: 1mΩ~2Ω;5A: 2mΩ~4Ω;1A: 10mΩ~20Ω;200mA: 100mΩ~100Ω;20mA: 10Ω~20KΩ;

Model	JH9910S
Accuracy	0.2%
Minimum resolution	0.1u 0hm
Operating temperature	-10*40C
Ambient humidity	less than 80%RH, no condensation;
Power supply	AC220V
Tester dimensions	28mm* 350mm* 230mm (L*W*H)
Tester mass	10 hours

 






FAQ

1. Is your company a sales company or a manufacturer?
Our company is an industrial and trade enterprise, with our own factory and lab, self-produced and self-sold. We were founded in 2013 and have 12 years of production experience, which has reliable production lines, test rooms and R&D centers.

2. Whether the goods are in stock, whether they can be customized, and how long the delivery time?
After the goods have been ordered, it takes about 7 working days for production if there are no accidents.

3. Is the quality guaranteed?
In order to ensure quality, we use imported components in large quantities. After three times of quality inspection, the goods can be sent out, and the export is in well package with fast shipping.

4. What are the after-sales terms?
We offer free consulting service, 1 year warranty, and adopt various methods such as email communication, video calls, technology door-to-door, aiming to solve any after-sales problems in a timely manner.

5. What are the cooperative countries or regions?
Products have been successfully exported to the United States, Brazil, Australia, Russia, the Netherlands, Indonesia, Bangladesh, Iran, India, Saudi Arabia, Mongolia, Japan and other countries and regions. In the United States, India, Vietnam and other regions have cooperative distributors, can provide thoughtful services.

6.Is customization supported?
We support customization in language use according to your requirement if the quantity ordered reaches.