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18
1 000 kVA medium-voltage transformer
Primary voltage (MV)
20 kV (depending on project and site)
Insulation level
24 kV
Primary (MV) tapping
±2.5 % and ±5 %
Secondary voltage (LV)
SM330TS-SV: 0.28 kV
SM360TS-SV: 0.32 kV
Standard
IEC60076
Vector group
Dd (no start point, phase is irrelevant)
Short circuit voltage UK
4 %…6 %
No-load losses
< 1 300 W (oil) / < 2 000 W (dry) CC
Load losses (@75 °C)
< 11 000 W CC
Environment
Internal application (no air conditioning
required)
Max. ambient temperature
40 °C
Max. installation altitude
< 2 000 meters above sea level
Relative humidity
5 %…95 %
Insulation
Basic insulation designed for pulse operation
of an inverter
Test voltages
50 kV (medium voltage to low voltage) / 8 kV
(low voltage to protective conductor PE)
In addition, the medium-voltage transformer must have a test record of the final test that con-
tains details about the insulation measurements, no-load and full-load losses.
Requirements for oil-based medium-voltage transformers
In addition to the details in the “1 000 kVA medium-voltage transformers” table, oil-based
medium-voltage transformers must have the following specification:
■
■
Design Art IP00 NV / IP54 medium-voltage transformer and medium-voltage con-
nector with hermetically closed tank
■
■
Accessories: DGPT2 (full transformer protection)
3.4.4 Medium-voltage switchgear
The correct installation of the medium-voltage switchgear is in the hands of the station
outfitter. The local regulations and guidelines must be followed.
Содержание TS-SV
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