Transformer Winding Resistance Meter

This Transformer Winding Resistance Meter USES 32-bit ARM as the core of the processing control , wiht automatic completion of self-calibration, steady flow judgment, data processing, resistance value display and other functions, can measure the dc resistance of various types of transformers and CT/P.The Transformer Winding Resistance Meter can work directly with internal batteries,which greatly facilitates the use of field workers.

Output current：0-10A, range: 1m-20K.

Remark: Please choose automatic test function if beyond above range.

1.Accuracy: 0.2% max. resolution： 0.1.

2.With large LCD screen display and English menu, easy to operate .

3.With large storage capacity , can store 2000 testing records .

4.Power supply: built-in battery

5.Working temperature：﹣10℃～40℃　　

6.Working environment：＜80%RH 　

7.Weight：1㎏

Principle of Transformer Winding Resistance Meter

The Transformer Winding Resistance Meter is an indispensable test item after the transformer is handed over, overhauled and its tap switch is changed. Of course, it can also test the resistance of coils such as transformers.

The Transformer Winding Resistance Meter like other instruments such as multimeters, is an instrument for measuring resistance. Regardless of whether it is DC resistance or insulation resistance, the theoretical basis is Ohm's law. The difference between them is only the measured resistance. Although the theoretical basis of these instruments for measuring resistance is the same, why can't we use a multimeter to measure the DC resistance of electrical equipment such as transformers? Let's talk about the principle of DC resistance tester and take a look at the advantages of DC resistance tester. .

The principle of the DC resistance tester is the typical four-wire measurement method, which is different from the two-wire method of the multimeter. The advantage of the four-wire method is that it can eliminate line resistance interference and improve measurement accuracy. Moreover, the DC resistance tester under modern technology and technology uses an advanced programmable constant current source, which can apply a constant high-precision current to the external load. The accuracy of the data obtained by the instrument is improved, and the accuracy of the final actual resistance is improved. These are all non-DC resistance testers that do not have. Resistance measurement instruments that do not use a constant current source will cause certain errors in the current data obtained by the final instrument due to the increase in load. These errors will affect The final test result.

Moreover, the relatively large current used by the DC resistance tester (generally from a few amperes to tens of amperes) allows it to maintain a relatively stable data when charging large transformers and other loads, and improves the anti-inductance and anti-interference capabilities. It is a factor that affects the measurement accuracy.

Due to these advantages of the DC resistance tester, the DC resistance tester has improved the measurement speed of measuring transformers and other samples, and has gradually replaced the original single and double-arm bridge. Of course, because the DC resistance tester uses precision electronic components, when measuring inductive samples, it must be fully discharged before removing the wire, otherwise it may cause the feedback of the large current impact and burn. Bad instrument. It may be inferior to traditional instruments such as single and double-arm bridges in the use of harsh factors, but it is undeniable that the advancement of science and technology is changing our production and lifestyle

1.Why I choose you?

A. We are manufacturer of kinds of electric test equipment . You can buy what you need here at very reasonable price.

B. With 20years experience in this filed, we have the ability to provide good service and products in low cost.

C. Adequate inventory to make sure that our clients can obtain goods in a short period.

2.Can you provide the training for us?

Re: Yes, we can provide free training for our client at our factory.

If you require the training on-site, we also can arrange accordingly.

We have 10 seasoned engineers who become our technical team, they flied many countries for client’s installation and commissioning!

3.What is your after-sale service

Re: We have 10 seasoned technical engineer as the after-sale service team.it is lead by our duty manager. We promise that our engineer can give answers within 1 hour and deal with equipment failure within 24 hours in time.

4.What’s the warranty period ?

Our warranty period is one year .

The product can be replaced within 1 month, can be repaired for free charge for one year and maintenance for lifetime.

What is more, our warranty can be extended only charged small warranty fee