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20A Transformer Winding Resistance Tester Transformer DC Resistance Tester

20A Transformer Winding Resistance Tester Transformer DC Resistance Tester

This 20A DC Resistance tester adopts new power supply technology, which has the characteristics of small size, light weight, large output current, good repeatability, strong anti-interference ability, perfect protection function and so on.
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Product Introduction

We will continue to give full play to the leading technological advantages of VLF Hipot Tester, insulating oil purifier machine, dissolved gas analyzer, and strive to lead the development of the industry with continuous innovation. We have many years of experience in supply chain management. Your needs standard is the first quality and credibility is our banner. We sincerely hope to cooperate with you for a win-win situation! Thank you very much the your support and love from new and old customers! Our company has advanced production equipment and various production and testing equipment. Technological innovation enables us to gain advantages in product differentiation and relative cost, so as to obtain reasonable profits and promote the formation and development of effective competition.

1. Application

FUOOTECH produced and exported the FTDC-20A Transformer DC resistance rapid tester since 2005. After continuous improvement and upgrading based on the good suggestions from clients and absorbing the newest technology at home and abroad, FTDC-20A already becomes the newest product for transformer DC resistance test.
 

This 20A DC Resistance tester adopts new power supply technology, which has the characteristics of small size, light weight, large output current, good repeatability, strong anti-interference ability, perfect protection function and so on.
 

The whole test equipment is controlled by a high-speed single-chip microcomputer, with a high degree of automation, with automatic discharge and discharge alarm functions. The instrument has high test accuracy and easy operation, and can realize the rapid measurement of transformer direct resistance.

More info of FUOOTECH 20A Dc Resistance tester

2. When To Measure Winding Resistance?

1). Risk of damage is significant whenever a transformer is moved. This is inherent to the typical transformer design and modes of transportation employed. Damage can also occur during unloading and assembly. The damage will often involve a current carrying component such as the LTC, RA switch or a connector.

Damage to such components may result in a change to the DC resistance measured through them. Hence, it is recommended that the DC resistance be measured on all on-load and off-load taps prior to energizing.
 

2). If the transformer is new, the resistance test also serves as a verification of the manufacturers work. Installation measurements should be filed for future reference.
3). At routine (scheduled) Transformer Maintenance: routine maintenance is performed to verify operating integrity and to assure reliability. Tests are performed to detect incipient problems.

20A Transformer DC Resistance Tester working at site

3. Technical Parameters

Items

Technical parameters

Notes

Measuring current

<20mA,1A,2.5A,5A,10A,20A

 

Measuring range

100μΩ~1Ω (20A)
500μΩ~2Ω (10A)
1mΩ~4Ω (5A)
2mΩ~8Ω (2.5A)
5mΩ~20Ω (1A)

Accuracy: ±(0.2%+2)

 

10Ω-20KΩ (<20mA)

Accuracy: ±(0.5%+2)

Minimum resolution

0.1μΩ

 

Display

LED Display

The resistance shows 4 significant digits

data storage

1000 list

 

Working environment

Environment temperature: 0℃~40℃
Relative humility: <90%RH,
No condensation

 

Power supply

AC 220V±10V, 50Hz±1 Hz

Safety tube 10A

Maximum power
consumption

1000W

 

Dimension

400×225×350(mm)

 

Weight

Tester box: 15.1KG, Line box: 5.75KG

 

 

4. Features

1). The whole machine is controlled by high-speed single chip microcomputer, with high degree of automation and easy operation.

2). The instrument adopts new power supply technology, with many current ranges and wide measurement range, which is suitable for DC resistance measurement of large and medium transformers.

3). The protection function is perfect, which is reliable to protect the impact of back EMF on the instrument, and the performance is more reliable.
 

4). Intelligent power management technology, the instrument always works in the minimum power state, which can effectively save energy and reduce heating.

5). Sound discharge alarm, clear discharge indication, reduce operation mistakes.

6). Fast response.

7). 320x240 ultra small pixel 65K true color liquid crystal,

8). The instrument is equipped with RS232 and USB interface, which can communicate with computer and store in U disk.

9). The instrument has its own calendar clock and power down memory, which can store 1000 groups of test data and can be consulted at any time

 

5. Stocks at office

20A Transformer DC Resistance Tester in stocks (2)

 

6. Packing, Delivery, Shipping and Payment

deliver fuootech 100A Transformer DC Winding Resistance Tester

 

7. Certificates

FUOOTECH winding resistance tester certificate_

 

8. Fault inspection and Trouble-shooting

 

Phenomenon

Reason

Solution

1

Green light don't turn on when power switch connected

Current lines open a circuitPower fuse fusing

Change power lines
Change power fuse

2

Red light don't turn on when push the red button

Pressure regulating potentiometer didn't return to 0

Potentiometer return to 0

3

Red light turns on when push the red button, while raise voltage, red light turns off, red light turns on

High voltage output terminal tester has short circuit

Check the output electriccable. Check the tested products

4

During raise voltage, red light turns off, green light turns on.

Tester discharge or break-down over voltage or over current protection movement

Check the tested products reset setting valu

 

Welcome to contact us for any inquiry and cooperation by email, phone, WhatsApp, etc.

fuootech W.jpg

 

We insist on customer-oriented, and meet the needs of customers with a good group of 20A Transformer Winding Resistance Tester Transformer DC Resistance Tester, so as to win their trust and loyalty. Our company carries the trust and trust of every customer with first-class product quality and exquisite technical service. We believe that knowledge and competence are the prerequisite and foundation for companies and individuals to be based in the professional field.

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