One-phase distribution transformers OLS (ОЛС) on powers of 0,63 and 1,25 kVAOne-phase distribution transformers OLS (ОЛС) on powers of 0,63 and 1,25 kVA
Description
The transformer is intended for powering auxiliary circuits of the sectioning points and automatic reserve switching (ARS) of the electric networks for 6 - 10 kV.
The transformer is manufactured in compliance with requirements of GOST 15150 designers version "У" (moderate) and "T"(tropical) to location category 2 and is intended for embedding in factory assembled switchgears of the outside mounting at the following operating conditions:
- ambient air temperature at operation is from minus 45 to plus 50 °C for "У2" version and from minus 10 to plus 50 °C for "T2" version;
- the upper value air humidity is 100% at 25 °C for "У2" version and 100% at 35 °C for "T2" version;
- mounting in any position.
The transformer is patented Patent Certificates No 6266, 6267.
Table 1. Technical data
Parameter
|
Normal values
|
OLS-0,63/6
|
OLS-0,63/10
|
OLS-1,25/6
|
OLS-1,25/10
|
Voltage class, kV
|
6
|
10
|
6
|
10
|
Maximum operating voltage, kV
|
7,2
|
12
|
7,2
|
12
|
Rated voltage of the primary winding , kV
|
6,3
|
10,5
|
6,3
|
10,5
|
Rated voltage of the secondary winding*, W: a1 - x a2 - x a3 - x a4 - x
|
100
209
220
231
|
Rated burden at the rated voltages 100 and 220V, VA
|
630
|
1250
|
Maximum power within 10 min. on the tapings 220 V, VA:
|
2000
|
Rated frequency, Hz
|
50 or 60
|
Vector group of transformer
|
1/1-0
|
Test voltage, Hz
|
.
|
one-minute of industrial frequency
|
25
|
35
|
25
|
35
|
of full lighting impulse
|
60
|
75
|
60
|
75
|
of cut lighting impulse
|
70
|
90
|
70
|
90
|
Masst, kg
|
26,5±1,5
|
28,5±1,5
|
28±1,5
|
30±1,5
|
D, mm
|
188±3
|
212±3
|
*Tolerance of the voltage on the tapping 100V - ±3%, on the other tappings - ±1%.
General view of transformer (drawing)
|