Three-phase group of voltage transformers 3xZNOLPM (3хЗНОЛПМ)

Three-phase group of voltage transformers 3xZNOLPM (3хЗНОЛПМ)

Description

Three-phase antiresonance group is manufactured in climatic version "УХЛ" and "Т" according to the standard requirements of GOST 15150 location category 2.
The location of the primary winding terminal is possible either on the front (ZNOLPM) or back (ZNOLPMI) side of the transformer.

Mounting in any position.

Grounding of secondary winding – optionally;

Grounding of mounting plate – compulsory!

The group may be supplied in the following vasriations:

1.From three transformers ZNOLPM – 3xZNOLPM-6 or 3xZNOLPM-10;

2.From three transformers ZNOLPMI – 3xZNOLPMI-6 or 3xZNOLPMI-10;

3.From one transformer ZNOLPM (mounted in the middle) and two transformers ZNOLPMI (mounted on both sides) – 3xZNOLPM(1)-6 or 3xZNOLPM(1)-10;

4.From two transformers ZNOLPM (mounted on both sides) and one transformer ZNOLPMI (mounted in the middle) – 3xZNOLPM(2)-6 or 3xZNOLPM(2)-10 

Table 1. Technical data

Parameter

Normal value

3xZNOLPM-6
3xZNOLPMI-6

3xZNOLPM-10
3xZNOLPMI-10

Voltage class, kV

6

10

Maximum operating voltage, kV

7,2

12

Rated voltage of the primary winding, V

6000
6600

10000
10500
11000

Rated voltage of the main secondary winding, V

100

Voltage on terminals of opened delta of additional secondary windings :
at the symmetrical network operation, V, not more than
when one network phase is short circuited, V


3
from 90 to 110

Rated power of three-phase group in accuracy class*, VA:

0,2
0,5
1,0

 

30
90
225

 

30
90
270

Rated mesh voltage on tappings of main secondary winding, V
100
Burden on terminals of open delta of additional secondary winding at voltage of 100V and power coefficient equal to 0.8 (inductive burden), VA 400

Vector group of transformer

YN/Y/Δ

Rated frequency, Hz

50

Mass, kg 73

* Required burden should be specified in the order.

General view of transformer (drawing)