Ungrounded voltage transformers NOL-35 (НОЛ-35)

Ungrounded voltage transformers NOL-35 (НОЛ-35)

Description

 

Transformers are intended for instalation in factory-assembled switchgears or closed switchgears. Transformers are intended for transmission of signal to measuring, protection, automation, alarming and controlling devices in electrical networks of alternate current of 60 or 60 Hz frequency.

Climatic version "УХЛ" or "T" location category 2 according to GOST 15150.

Operating mounting - vertical.

There are several variation of secondary terminal to make operation easier:

NOL-35-1; NOL-35-2; NOL-35-3. 

 

Table 1. Technical data

Parameter

Value

Voltage class, kV

 20

35

Maximum operating voltage, kV

 24

42

Rated voltage of primary winding, V

 20000

35000

Rated voltage of secondary winding, V

100

Rated burden at power factor of active-inductive load  0,8, VA, in a given accuracy class:

0,2***
0,5
1,0
3,0

 

10
30
100
300

 

10, (50)
75, (150)
150, (300)
600

Maximum burden out of accuracy class, VA

 630

1000

Maximum allowed continuous primary current , A

 0,032

0,029

Vector group of transformer

1/1-0

AC current frequency, Hz

  50 or 60
Mass, kg, max  77

79

Notes:

** Only for transformers with rated secondary voltage of 100V and single accuracy class.
***Raquired rated burden should be specified in the order.
Transformers intended for commercial record of electricial power are manufactured with single accuracy class of 0,2 or 0,5.
Burden, given in brackets, ia rated burden in given accuracy class.

General view of transformer (drawing)