Overview:

Transformer dc resistance is transformer manufacturing of semi-finished products, finished products testing, installation, commissioning test and power sector preventive test will measure project, can effectively find the transformer coil material selection, welding, loose connection parts, short, break the blemish such as manufacturing and running after the existence of hidden dangers.In order to meet the needs of transformer dc resistance rapid measurement, it has developed a new generation of CT series dc resistance tester.

The instrument adopts the new program-controlled linear constant current source technology, with large output current, current gear, small volume, light weight, etc.

The machine is controlled by a single-chip microcomputer, automatic complete self-checking, data processing, display, save, print, and other functions, with sophisticated electronic measuring technology, makes the instrument is of high precision and wide measuring range, easy operation, can realize the sensibility of transformer and voltage transformer resistance rapid measurement.

Function characteristics:

1.Using high precision electronic measuring technology and high-performance single chip microcomputer, makes the instrument has high measurement precision and numerical stability, good repeatability.

2.Instrument can choose appropriate according to the load current, the current gear, the biggest can output  

 50A current.

3.With printing, storage, real-time view the data, and other functions.

4. Big screen display, menu operation, friendly interface, be clear at a glance, convenient operation.

5.Micro printer for thermal printer, speed, the surface can be installed directly printing paper.

6. With audible alarm automatic discharge and discharge instructions, and other functions.

Technical parameters

1. Output current: 50A、40A、20A 、10A 、5A、2.5A

2. Range：   2mΩ-8Ω    （2.5A）

          1mΩ-4Ω     （5A）

         0.5mΩ-2Ω      (10A)

         0.1mΩ-1Ω      (20A)

         0.05mΩ-500mΩ  (40A)

         0.04mΩ-400mΩ  (50A)     

3. Accuracy: 0.2% ± 2 μ Ω

4. Resolution: 0.1μ Ω

5. Working temperature: - 20 ~ 40 ℃

6. Environment humidity: ≤90% RH, no condensation

7. Working power supply: AC220V ±10%, 50H

III.DC Winding Resistance Tester CT88-10B

Overview:

Transformer dc resistance is transformer manufacturing of semi-finished products, finished products testing, installation, commissioning test and power sector preventive test will measure project, can effectively find the transformer coil material selection, welding, loose connection parts, short, break the blemish such as manufacturing and running after the existence of hidden dangers.In order to meet the needs of transformer dc resistance rapid measurement, it has developed a new generation of CT series dc resistance tester.

CT88-10B three channel DC resistance tester, dual power source structure  three-phase can be simultaneously used to transformer winding Y_n tap,measurement system has independent three channels of voltage and current sampling, and it will measure and display three-phase resistance value and three-phase unbalance rate.

Function characteristics:

1.High precision electronic measuring technology, makes the instrument has high

measurement precision and numerical stability, good repeatability.

2.The instrument output large current and the current is automatically selected.

  (3 channel max 10A; Single channel max 20A).

3.Three channels measurement, real-time acquisition, simultaneously measuring three

resistance values, and calculating three-phase resistance imbalance.

4.Not only measuring three phases simultaneously, but also testing single channel

according to traditional mode, at the same time, it has the function of temperature conversion.

5.It has perfect protection circuit and strong reliability

6.Storage data 20 groups, real-time view..

7.Big screen display, menu operation, friendly interface, be clear at a glance, convenient

operation.

8.Micro printer for thermal printer, speed, the surface can be installed directly printing

paper.

9.Audible alarm automatic discharge and discharge instructions, and other functions.

Technical parameters

1.Output current: Automatic selection current

               3 channel max 10A; single channel max 20A

2.Test range: 0 -100Ω

3.Acuuracy: 0.2%±0.5μΩ
4.Resolution:0.1µΩ

5.Operation temeprature:-20~50℃

6.Humidity: <90% No condensation
7.Power supply:AC220V±10%,(50±1)Hz

8.Size: 330*230*270mm

9.Weight: 10kgs

Accessaires

1, DC resistance tester............................ 1 unit

2. Special test cable..................................1 set

3. Power supply cable...............................1 unit

4. Fuse......................................................2 units

5. Calibration.............................................1 unit

6. Operating manual..................................1 unit