NRBZC-IV Transformer Turns Ratio Tester

NRBZC-IV Transformer Turns Ratio Tester

Classification: Transformer Inspection/Switch Testing Device

Reference standard: DL/T963-2005

Verification:  View the certificate

Instructions:  DOC Instructions

  PDF Instructions

Tel: 027-87207771 87207772 87207773 87188862

Verification certificate
Product introduction

In the production process of the semi-finished and finished transformer, according to the IEC and national standard, the newly installed transformers should be carried on turn ratio or voltage ratio test before putting into operation to check the correctness of turns ratio, the status of tap switch, whether the transformer is short-circuited and whether the transformer can run in parallel. Traditional bridge method is complicated, it can’t read the data directly, you have to make conversion, and the testing results are data of one phase. NRBZC-IV Turns ratio tester 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.

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The Characteristics of the products

(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 , higher accuracy.

(2) Adopt 3 phase output voltage, 3 phase input voltage and 3 phase measuring at the same time, which can easily automatic identify 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, with the functions of high and low voltage reverse connect protection, transformer inter-turns short circuit protection, tap-changer protection and output short circuit protection, 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 test.

The parameters of the products

(1) Range: 0.9~10000

(2) Accuracy: ± 0.1% + 2 digits  (0.9~500)   

           ± 0.2% + 2 digits  (501-2000) 

           ± 0.5% + 2 digits  (2001-10000)

(3) Resolution: minimum0.0001

(4) Power supply: AC220V ± 10%, 50Hz

(5) Applied temperature: -10℃ ~ 40℃

(6) Relative humidity: ≤ 85%, no condensation.

(7) Dimension: 400mm×320mm×150mm

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Product information