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Transformer test series

NR6550 series transformer short-circuit impedance tester

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NR6550 series transformer short-circuit impedance tester

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Product description

Product Introduction

　　NR6550 series transformer short-circuit impedance tester is mainly suitable for low-voltage short-circuit impedance testing in power transformers (single-phase or three-phase) factory, overhaul, pre-test and handover test. The principle is to test the short-circuit impedance (%) of the power transformer on the spot, and compare it with the nameplate value or the factory value. After the factory test, the winding displacement and deformation caused by the serious fault current during transportation, installation and operation can be found. And other defects. The NR6550 transformer short-circuit impedance tester is easy to operate and the test results are very intuitive. It is a fast tester for on-site testing of transformer winding deformation.

Main Feature

　　◆ No need to connect an external voltage regulator, you can measure the tested product;

　　◆ The instrument uses 220V low-voltage power supply, automatically applies current to the three-phase high-voltage windings of the transformer, collects data synchronously and automatically calculates the impedance error percentage. The test results are very intuitive;

　　◆ With output current limiting function, suitable for any impedance test product;

　　◆ The instrument operation is very simple, one-time wiring, three-phase test can be automatically completed without reversing the test line;

　　◆ For three-phase transformers, the instrument can test single-phase or three-phase; it can be tested manually or automatically;

　　◆ With the function of measuring zero sequence impedance;

　　◆ With the function of measuring inductance;

　　◆ Use large-screen LCD display, full Chinese menu-style operation, according to the prompts on the screen to complete the test;

　　◆ With printing and storage functions; equipped with 232 serial ports and U disk storage, which is convenient for the analysis and arrangement of data;

　　◆ Simple wiring, accurate testing, high level of automation, small size and light weight.

Technical Parameters

　　◆ Voltage measurement range: 5V～400V Measurement accuracy: 0.2 level

　　Current measurement range: 0.1A～20A Measurement accuracy: 0.2 level

　　◆ Conditions of use

　　Working power supply: AC220V ± 10%

　　Power frequency: 50(±10)Hz

　　◆ Test result judgment reference: The impedance error is within ± 2%: The transformer can operate normally

　　Impedance error is within ± 2%-± 5%: Regular transformer inspection

　　The impedance error is more than ± 5%: the transformer should stop

Keyword:

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