Siemens SINAMICS S120 Equipment Manual page 110
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Also See for SINAMICS S120:
- Function manual (1094 pages) ,
- Diagnostic manual (947 pages) ,
- Manual (848 pages)
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Line Connection Booksize
2.13 Line connection variants
Example 1
u
matching transformer = 3 %,
k
S
K plant
S
K line
According to a)
S
n1
According to b)
S
n2
The matching transformer requires a rated power S
Example 2:
u
matching transformer = 1 %,
k
S
K plant
S
K line
According to a)
S
n1
According to b)
S
n1
The matching transformer requires a rated power S
Example 3:
If S
u
matching transformer = 3 %,
k
S
K plant
S
K line
According to a)
S
n1
According to b)
S
n2
The matching transformer requires a rated power S
Example 4:
If S
u
matching transformer = 1 %,
k
110
= 50,000 kVA
= 16 kW • 70 • 0.73 = 820 kVA
= 1.27 • 16 kW = 21 kVA
> S
⇒ S
is decisive
n1
n2
= 50,000 kVA
= 16 kW • 70 • 0.73 = 820 kVA
= 1.27 • 16 kW = 21 kVA
> S
⇒ S
is decisive
n2
n1
is smaller, the transformer must be stronger
K plant
= 3,000 kVA
= 16 kW • 70 • 0.73 = 820 kVA
= 1.27 • 16 kW = 21 kVA
> S
⇒ S
is decisive
n1
n2
is smaller, you can use, alternatively to example 3, a transformer with a smaller u
K plant
of 25 kVA at a u
n
of 21 kVA at a u
n
of 34 kVA at a uk of 3 %.
n
Equipment Manual, (GH2), 07/2007, 6SL3097-2AC00-0BP5
of 3 %.
k
of 1 %.
k
.
k
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