HSZGY-2C DC Resistance Tester

1HSZGY-2C DC Resistance Testeroverview

The DC resistance of transformers is a necessary measurement item for semi-finished and finished products in transformer manufacturing, factory testing, installation, major repairs, changes to tap changers, handover testing, and preventive testing by power departments. It is possible to check the welding quality of the winding joints and whether there is a turn to turn short circuit in the winding. It can also detect whether the various positions of the voltage tap changer are in good contact, whether the actual position of the tap changer matches the indicated position, whether the lead wire is broken, and whether there are broken wires when multiple wires are wound together. This instrument adopts a new power technology, which has the characteristics of small size, light weight, large output current, good repeatability, strong anti-interference ability, and complete protection function. The whole machine is controlled by a high-speed microcontroller, with a high degree of automation and automatic discharge and discharge alarm functions. The instrument has high testing accuracy, easy operation, and can achieve rapid measurement of transformer direct resistance.

two、HSZGY-2C DC Resistance TesterSecurity measures

• Before using this instrument, be sure to read this manual carefully.
• This instrument can be used both indoors and outdoors, but should be avoided from places such as rain, corrosive gases, etc.
• Instruments should avoid severe vibrations.
• The maintenance, care, and adjustment of instruments should be carried out by professionals.
• After the test is completed, be sure to wait for the discharge alarm to stop before turning off the power and removing the test line.
• When measuring an unloaded voltage regulating transformer, be sure to wait for the discharge indicator alarm sound to stop before switching gears.
• During the testing process, it is prohibited to move the test clip or turn off the power supply line

three、Functional Features

1The whole machine is composed ofhigh speedSingle chip microcontroller control, automaticHigh degree of transformation,Easy to operate.

2The instrument adopts a brand new power technology,Multiple current levelsWide measurement range，Automatically select current based on load, suitable for measuring DC resistance of small transformers and voltage transformers.

3. ProtectingThe protection function is complete and can reliably protect against the impact of back electromotive force on the instrument，More reliable performance.

4havesoundSound discharge alarm, clear discharge indication, reduce misoperation.

5Fast response speed, can directly switch between measurement statesOn loadTap changer, instrument automatically refreshesdata.

6Intelligent power management technology,The instrument always operates in the lowest power state,Effectively reduce internal heating of the instrumentSave energy.

7. The instrument is powered by lithium batteries, with a small size, light weight, and easy portability.

4、 Technical indicators

• Current mode: Output current is automatic, 2A, 1A, 500mA、100mA、50mA、10mA、5mA、≤5mA。
• Resistance mode: Select resistance as automatic≤2Ω≤4Ω≤8Ω≤40Ω≤400Ω≤2KΩ≤5KΩ100KΩ.
• Resolution: 0.1μΩ
• Range: 2K Ω -100K Ω (≤)5mAFile)

10Ω-5KΩ （5MA mode)

1Ω-2KΩ (10mA gear)

200mΩ-400Ω (50mA gear)

100mΩ-200Ω (100mA gear)

50mΩ-8Ω (500mA gear)

10mΩ-4Ω (1A gear)

5mΩ-2Ω (2A gear)

• Accuracy: 2 ‰ ± 2 words
• Working temperature: 0-40 degrees Celsius
• Working humidity:<90% RH, no condensation
• Working power supply: Lithium ion rechargeable battery

5Instrument completeness