Model TO712C Transformer Ohmmeter

Contact: Mr Feng

Tel:8613519187272

Web:http://www.xaapt.com

You can visit our website to get more information about us.

Application:
　　Transformer Ohmmeter, also called transformer resistance tester. It is mainly used to test transformer winding resistance.
　　TO712C Transformer Ohmmeter is mainly applied for factory test in transformer manufacture, verifying the factory test reading, or finding out the presence of the defect in on-site transformer.
　　To test transformer winding resistance can effectively find the defect as follow:
　　    Short circuit, open circuit, wrong wire connection in electric circuit
　　    Welding defect of winding wire, between winding and leads
　　    Whether tap switch, leads and the casing keep good contact
　　    Whether coil specification meet the requirement of design
　　The instrument adopts new constant-current technology, with the advantages of constant output, low loss, greatly improve the measure precision. Also,The additional demagnetization function can effectively reduce the residual magnetization upon completion resistance test.
　　The whole tester is controlled by Single-chip Microcomputer, having the functions of automatic self-test, data processing, display & other functions, and also it has automatic discharging and discharging indicator functions.
　　The tester for high testing precision, simple operation,can realize the rapid measurement of transformer resistance. It is very suitable for winding resistance test of the transformer with high resistance.
Product Features:
　　Used for winding resistance test of the transformer no more than 240MVA
　　Large current output(20A maximum output)
　　less loss and high reliability constant-current source
　　Wide measurement range(0Ω-20KΩ),
　　High precision ,minimum resolution up to 0.1μΩ
　　Demagnetization function for reducing the residual magnetization upon completion resistance test
　　Automatic temperature conversion
　　Anti-arcing protection function for inductive test item
　　Large LCD for clear data display
　　Permanent calendar, 100 groups of data saving, no data loss upon power off.
　　USB interface for exporting data, convenient for data view.
　　RS485 port is available for connecting with PC and realize the remote control with combining the PC operation software.
　　Discharging sound warning, clear discharge indication reduce the misoperation possibility
　　Protection warning function for incorrect power supply of AC380V
　　
Technical Specifications:
　　Output current: 20A、10A、3A、1A、15mA
　　Output voltage: DC50V
　　Measurement range:
　　    0Ω~1Ω        (20A)
　　    2mΩ～2Ω     (10A)
　　    6mΩ～8Ω     (3A)
　　    20mΩ～24Ω    (1A)
　　    20Ω～20kΩ    (15mA)
　　Accuracy: 0.2%±0.5μΩ
　　Minimum resolution: 0.1μΩ
　　Working power: AC220V±10%,50HZ±1HZ
　　Working temperature: -20～40℃
　　Relative humidity: ≤80%RH,no dew
　　Dimension: 420mm×340mm×200mm
　　Weight:10 Kg
Order Information
Item                                                       Art. No.
TO712C Transformer Ohmmeter   1 set
Test leads                                           1 set
Three- core power line                     1 piece
10 A  type fuse                                    2 pieces