The measurement of the DC resistance of the windings is one of the routine tests of the transformer. Its purpose is to check whether the connection between the windings, between the windings and the leads, or whether the mechanical characteristics are good, whether the resistance between the phase windings is balanced, etc., to ensure that the transformer Safe operation.
The three-channel DC resistance tester developed and produced by our company uses a 32-bit ARM core as the processing core to control the whole machine and automatically complete functions such as self-calibration, steady flow judgment, data processing, and resistance value display. The transformer YN connected to the windings can be charged at the same time, sampled at the same time, and measured at the same time. The windings of △ and Y connection can be connected at one time and measured separately. The measurement time is greatly shortened. It greatly facilitates the use of the staff.
Performance characteristics and technical indicators
Output current and range: output current: 0-20A, range 0.5mW-2KW.
Current range current range
20A 0.5mW-500mW 2A 20mW-5W
10A 1mW-1W 0.5A 2W-20W
5A 10mW-2W 0.2A 10W-50W
Note: Please use the 0.2A gear to test the range above 50W.
Test accuracy: 0.2%, the highest resolution: 0.1mW.
The instrument uses a 7-inch large-screen true color LCD display, Chinese menus, and graphical prompts for wiring. The operation is intuitive and convenient.
For transformers with YN connected windings, it can be measured at the same time (three-phase measurement); for transformers with △ and Y connected windings, it can be measured separately (three-phase separate measurement); Wire resistance).
It can convert the winding material and measured temperature; automatically display the unbalance rate of the three-phase winding.
The tap position can be adjusted manually on the test interface.
With large-capacity storage function, it can store 200 test records,
Working power supply: AC220V±10﹪; working temperature: ﹣10℃～40℃; working humidity: ambient humidity <80%RH
Instrument weight: 4㎏.
Mobile version
15388193573
