Description
ASSEN ARRT Transformer Turns Ratio Testing Kit
Application:
During the processing of the semi-finished products and the finished products in transformer production, the newly installation transformer before using, and according to IEC and national standard, the turns ratio or voltage ratio should be tested in the circle rate. Can check the correctness of the transformer turn ratio, tap-changer condition, whether short circuit between turns and whether the transformer can parallel run. Traditional bridge method is complicated, and can’t read the data directly, and you have to make conversion, the testing results are data of one phase.
Turns ratio tester of ATTR type overcomes the shortcomings of traditional bridge method. The monitor adopts big screen with lattice liquid crystal, which has the function of indicating by menu, operating easily and directly. It finishes test of three-phase voltage ratio or turns ratio once, fast testing and high precision.
Transformer turns ratio tester’s Features:
1. Instrument internal adopt precision three-phase inverter measurement power supply instead of the single-phase mains supply as measuring voltage, which eliminate the harmonic effect of the main voltage , more accuracy. If the working power supply is generator and its without any effect.
2.Adopt 3 phase output voltage,3 phase input voltage and 3 phase measuring at the same time, can very easily automatic identification of transformer connection group 0 -11.
3.Suitable for various of transformers, with the function of testing the Z type transformer.
4.Using precision three-phase inverter power supply, has the high and low voltage reverse connect protection and transformer inter-turns short circuit protection, tap-changer protection and output short circuit protection functions, increase the stability of instrument.
5.After inputting the rated parameters, can automatic measure transformer turns ratio, error and tap-changer points, especially for asymmetric tap-changer points, also can accurately test the position of the transformer tap-changer, can measure up to 99 points of tap-changer
6.With 65K True Color Module LCD display, each operation step with English prompt, and the operation can be completed just by prompt and no need of manual.
7.With Micro-printer ,USB and RS232 interface.
8.With sealed water-proof and shock-proof sturdy hand-case, be suitable for field testing.
Transformer Turns Ratio Tester’s Technical Parameters:
1)Range: 0.9～10000
2)Accuracy: 0.2 class
±0.2%+2words (501-2000)
±0.5%+2words (2001-10000)
3) Resolution: Minimum is 0.0001
4)Working power supply: AC220V±10% 50Hz
5)Applied temperature: -10℃～40℃
6)Contrary humidity: ≤85%, R.H.
7)Size: 400mmX320mmX150mm
8).Wieght:15kg.
Panel Instruction:
1.Screen: 65K True Color matrix LCD, digital adjust the backlight, display the operation menu and the test results.
2.High voltage terminals: Connect instrument terminals: The yellow, green,red and black terminals with the corresponding A, B, C ,0 three phase of the tested transformer high-voltage side
3.Low voltage terminals: Connect instrument terminal: The yellow, green, red and black with the corresponding a, b, c ,0 three phase of the tested transformer
4.AC 220V:Power supply input.
5.Printer: Print the testing results.
6.RESET: Press this key the instrument recoveries the initial state.
7.Direction key: Up, down, left and right, 4 directions in order to select menu and modify data.
8.OK: After selecting, makes sure of the function.
9.Earthed terminal.
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