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Compact transformer substations
Are equipments which provides the connection of public consumers, either industrial or residential ones, to the medium voltage system.
Operating conditions:
| Ambient temperature during use [°C] |
-25 - +40
|
| Solar Radiation [W/mp] |
max. 1000 |
Climate group
|
Wdr/CT moderate climat: dry hot / moderate cold) |
| Snow load strenght [kN/mp] |
2,5 |
| Wind load [kN/mp] |
0,8 |
Degree of pollution [ level]
|
2
|
Height
|
<1000m |
Air relative humidity within transformer substation - %
|
95 (average in 24 hours) or 90 (average for a month) |
Technical features:
Feature
|
MV Cell
|
LV Board
|
| Rated voltage - [kV] |
24 |
0,4 |
| Operating voltage - [kV] |
20
|
0,4
|
| Lightning pulse withstand voltage (1,2/50us) - [kV] |
12S
|
8
|
Industrial frequency withstand voltage -
[kV] |
SO
|
3,5
|
| Free electric arc resistance [kA] |
12,5
|
-
|
Duration of free electric arc [s]
|
0,5
|
-
|
Construction aspects:
| Outer finishing |
- standard - option chosen from the Electroalfa catalog
- beneficiary option
|
| Inner finishing |
- standard - washable, white color
- beneficiary option
|
| Doors/windows material |
|
Types of construction options:
Variants
|
Lenght
|
Width
|
Height
|
| AlfaPower 400I- variant 01 |
4200
|
2100
|
2650
|
| AlfaPower 400I- variant 02 |
4400
|
2500
|
2650
|
| AlfaPower 400I- variant 03 |
4100
|
2300
|
2650
|
| AlfaPower 400I- variant 04 |
3900
|
2100
|
2650
|
| AlfaPower 630I- variant 05 |
4700
|
2500
|
2650
|
| AlfaPower 630I- variant 06 |
4300
|
2200
|
2650
|
| AlfaPower 630I- variant 07 |
3900
|
2200
|
2650
|
| AlfaPower 2x630I- variant 08 |
4500
|
3100
|
2650
|
| AlfaPower 2x630I- variant 09 |
5900
|
2300
|
2650
|
AlfaPower 630I- variant 10
|
5700
|
2500
|
2650 |
AlfaPower 400E- variant 11
|
3300
|
2500
|
2650
|
AlfaPower 400E- variant 12
|
3100
|
1900
|
2650
|
AlfaPower 400E- variant 13
|
2800
|
2300
|
2650
|
AlfaPower 400E- variant 14
|
2800
|
1900
|
2650
|
AlfaPower 630E- variant 15
|
3400
|
2000
|
2650
|
AlfaPower 630E- variant 16
|
3500
|
2500
|
2650
|
AlfaPower 630E- variant 17
|
3200
|
2300
|
2650
|
AlfaPower 630E- variant 18
|
3000
|
2000
|
2650
|
Construction variants:
The options of construction are established according to the type of operation, which may be from the inside or from the outside, with rated power supply transformer and with various equipment configurations.
Other information:
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