Installation Instructions

● Inverters with an LO base load input current > 16 A and ≤ 75 A
The drive system is in compliance with IEC/EN 61000-3-12 under the following
precondition:
– Short-circuit power S
SC
at the connection point of the customer's system to the public
grid, is not greater or is equal to the value according to the following formula:
S
SC
≥ 120 ∙ √3∙ U
in
∙ LO base load input current
The installation company or company operating the drive system is responsible for
ensuring that this device is only connected at a connection point with an appropriate
short-circuit power (fault level).
Example: FSD inverter, 400 V, input current, 42 A:
S
SC
≥ 120 ∙ √3 ∙ 400 V ∙ 42 A
This corresponds to a low-voltage transformer with an apparent power rating of
approximately 160 kVA … 200 kVA with 4 % … 6 % U
k
If these preconditions do not apply, then the installation company or company operating
the device must obtain authorization from the grid operator to connect the device regarding
the harmonic currents.
Harmonic currents (Page 75)
● Inverters with an LO base load current > 75A
There are no standard-related requirements for installing devices such as these. However,
it is recommended to inform the grid operator when connecting such a device.
7.8.2 Harmonic currents
Table 7-13 Typical harmonic currents (%) of the inverter
Inverter Harmonic number
5th 7th 11th 13th 17th 19th 23rd 25th
FSA … FSF
1)
20 14 9.1 7.7 5.9 5.3 4.3 4.0
1)
Values referred to the LO input current
Technical specifications
7.8 Electromagnetic compatibility of variable-speed drives
Power Module PM230, IP20 / Push-through technology (PT)
Hardware Installation Manual, 08/2016, A5E34331322B AB 75