Siemens SIMOCODE pro C, Системное руководство

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Mounting, wiring, connecting, system interfaces, configuration guidelines
12.2 Wiring, connecting
SIMOCODE pro
234
System Manual, 05/2019, A5E40507475002A/RS-AD/004
Requirements for an interposing current transformer
● Secondary current: 1 A
● Frequency: 50 Hz/60 Hz
● Transformer rating: Recommended ≥ 2.5 VA, depending on the secondary current and
cable length
● Overcurrent factor: 5P10 or 10P10
● Accuracy class: 1
Example 1
● 3UF1868-3GA00 current transformer:
–
Primary current: 820 A at nominal load
– Secondary current: 1 A
● SIMOCODE pro with 3UF7100-1AA00-0 current measuring module, current setting
0.3 A to 3 A. This means:
–
The secondary current of the current transformer is 1 A at rated load and is, therefore,
within the 0.3 to 3 A setting range of the current measuring module used
– The current setting I
s
to be parameterized in SIMOCODE pro is 1 A.
Figure 12-30 Example (1 of 2) for measuring current with an 3UF18 external current transformer