HZ-3120A DC resistance tester

1. Overview
The DC resistance of the transformer is a must-test item during the factory testing of semi-finished products and finished products in transformer manufacturing, installation, overhaul, after changing the tap changer, handover testing and preventive testing in the power sector. It can check the welding quality of the winding joints and whether there are inter-turn short circuits in the windings. It can check whether the contacts of various positions of the voltage tap changer are good and whether the actual position of the tap changer matches the indicated position. Is there any situation such as stock breakage? In order to meet the need for rapid measurement of transformer DC resistance, our company developed a DC resistance tester. This instrument adopts new power supply technology and has the characteristics of small size, light weight, large output current, good repeatability, strong anti-interference ability, and complete protection functions. The whole machine is controlled by a high-speed microcontroller, has a high degree of automation, and has automatic discharge and discharge alarm functions. The instrument has high testing accuracy and is easy to operate, and can quickly measure the direct resistance of the transformer.
2. Safety Measures
Be sure to read this manual carefully before using this instrument.
The operator of the instrument should have common sense in the use of general electrical equipment or instruments.
This instrument can be used indoors and outdoors, but it should be used away from rain, corrosive gas and other places.
The instrument should avoid severe vibration.
The maintenance, care and adjustment of the instrument should be carried out by professionals.
After the test, be sure to wait until the discharge alarm stops, then turn off the power and remove the test wire.
When measuring the no-load voltage regulating transformer, be sure to wait until the discharge indication alarm sound stops before switching gears.
. During the test process, it is forbidden to move the test clamp and power supply line
3. Functional characteristics
The whole machine is controlled by a high-speed single-chip microcomputer, with a high degree of automation and easy operation.
The instrument adopts new power supply technology, with multiple current ranges and wide measurement range, suitable for DC resistance measurement of large and medium-sized transformers.
, The protection function is perfect, it can reliably protect the impact of back electromotive force on the instrument, and the performance is more reliable.
. It has an audible discharge alarm and clear discharge instructions to reduce misoperation.
. The response speed is fast, the on-load tap-changer can be directly converted in the measurement state, and the instrument automatically refreshes the data.
, Intelligent power management technology, the instrument always works in the minimum power state, effectively saving energy and reducing heat generation.
, Dot matrix ultra-small pixel true color LCD,
, The instrument comes with a perpetual calendar clock and power-down storage, which can store a group of test data and can be consulted at any time
, Instrument configuration and interface , can communicate with computers and disk storage