Measuring parameters of power transformers-540-3

The purpose and scope meter - performance electromagnetic testing of transformers all schemes and groups of compounds according to GOST 30830-2002 in accordance with the requirements of the sow-N 20.302:2002 "NORMALIZED WIRABUANA ELEKTROANLAGEN" section "Sylow transformatory, autotransformer the Maslen reaktori sagarnaga priznacennja", and RD 34.45-51.300-97 "THE SCOPE AND STANDARDS TESTING ELECTRICAL equipment", in accordance with GOST 3484.1-88.

The list of main functions at one - and three-phase excitation of the test transformer:

- Measurement current and no-load losses at low voltage;

- Measurement resistance short circuit;

- Measurement transformation coefficient;

- The group definition connection of the windings of three-phase transformers and polarity of the conclusions single-phase transformers;

- Measurement of resistance windings to direct current.

In the measurement process is performed, the control asymmetry, nonsinusoidal and frequency excitation voltage.

The meter is intended for maintenance, repair, commissioning, testing of power transformers, both in the laboratory and field services ORGRES.

The meter provides the performance of their functions in terms the application of the relevant group 3 according to GOST 22261-94:

 

1.2

Normal conditions of use

 

 

- temperature ambient air, °C

20±5;

 

- relative humidity, %

30-80;

 

- atmospheric pressure. kPa (mm RT. Art.)

84-106 (630-795);

 

- voltage mains AC,

220±4,4;

 

- frequency mains, Hz

50,0±0.5 in.

 

 

 

1.3

Working conditions of use:

 

 

- temperature ambient air ;

from +5 to +40

 

- relative humidity, %

up to 80 at 30 °C

 

 

- atmospheric pressure, kPa (mm RT. Art.)

84-106,7 (630-800)

 

- voltage mains AC,

220±22

 

- frequency mains, Hz

50±1