Grounded voltage transformers ZNOL-35 (ЗНОЛ-35) for outdoor mounting

Grounded voltage transformers ZNOL-35 (ЗНОЛ-35) for outside mounting

Ungrounded voltage transformer ZNOL-35Description

The transformers are intended for powering electrical measuring devices, protection, signaling and control circuits of alternating current electrical systems with the frequency 50 or 60 Hz.
The transformer is manufactured in climatic versions "УХЛ" (moderate cold) and "T" (tropical) according to the standard requirements of GOST 15150 location category 1.
Ambient air temperature is from plus 50 °C to minus 60 °C, ambient air humidity is 100 % at 25 °C for УХЛ1 version and from minus 10 °C to plus 65 °C with air humidity 100 % at 35 °C for T1 version. The leakage path III to GOST 9920-89.
The transformer has no protection from resonance and switching overvoltage in the network.

The transformer is patented
Patent certificates № 2048, 2049, 2679, 5282, 6266, 6268, 18015, Patent Publications № 2087967, 2087968, 2087970, 2107350, 2110862, 2193252. Patent for the industrial unit № 47969. 

Table 1. Technical data

Parameter

Normal value

Voltage class, kV

35

27

Maximum operating voltage, kV

40,5

30

Rated voltage of the primary winding, V

35000/√3

27500

Rated voltage of the main secondary winding, V

100/√3

100

Rated voltage of the additional secondary winding, V

100/3

127

Rated burden of the main secondary winding , VA in accuracy class*:
0,2**
0,5
1

10**; 15; 20**
60
120

15
60
120

Rated burden of the additional secondary winding in accuracy class 3 , VA

100***

Maximum burden out of accuracy class, VA

600 

Rated frequency, Hz

50 or 60

Vector group of transformer 

1/1/1-0-0

Test voltage, kV:
of industrial frequency during one minute
of full lighting impulse
of cut lighting impulse


95
190
220


80
170
200

Mass, kg

90 max

General view of transformer (drawing)