Santerno SUNWAY TG1200 1000V TE OD, Руководство по установке

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INSTALLATION GUIDE MODULAR SUNWAY TG
TE OD
Rev. 03
– 01/06/2018
121/ 139
Figure 77: Coefficient Kt for temperature derating (at sea level)
Defined I
OUT 0
as the output current at sea level, the IOUT output current at a given altitude is obtained as:
𝐼
𝑂𝑈𝑇
(𝑎𝑙𝑡𝑖𝑡𝑢𝑑𝑒) = 𝐼
𝑂𝑈𝑇 0
∗ 𝐾
𝐴
(𝑎𝑙𝑡𝑖𝑡𝑢𝑑𝑒)
NOTE
The values in the figure above may change based on specific applications.
For applications above 3000 m, please contact Elettronica Santerno.
12.3.5. Short-circuit current contribution
The maximum short-circuit time-current mask has been evaluated in a system always including a low voltage
transformer, as illustrated in the figures below:
Figure 78: Short circuit localization in the SUNWAY TG TE inverters
The following assumptions considered as general cases are taken into account:
- Transformer short-circuit voltage: 6%
- Transformer losses: 1%
1.00 1.00
1.00
0.95
0.90
0.85
0.80
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0 500 1000 1500 2000 2500 3000
Altitude derating factor K
A
vs altitude [m]