Sma SC 500CP XT Installation User Manual download pdf (Page 75)

The minimum passage width between the open door of the inverter and the next fixed obstacle must be maintained.

The minimum passage width must comply with national standards.

Figure 26: Minimum clearances for two inverters in an electrical equipment room

Position Designation

A Minimum passage width

B Inverter

9.1.7 Grounding Concept

In accordance with the latest technology, the inverters are discharged to ground. As a result, leakage currents to

ground occur which must be taken into account when planning the PV power plant. The magnitude and distribution of

such leakage currents is influenced by the grounding concept of all devices in the PV power plant. It is therefore

recommended that e.g. for use of cameras and monitoring technology, signal transmission is executed in fiber-optic

technology. This will counteract possible interference sources.

The recommended grounding of inverter and MV transformer in meshed design reduces leakage current levels.

9 Appendix

SMA Solar Technology AG

Operating Manual 75SCCPXT-IA-E4-en-44

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Sma SC 500CP XT Installation User Manual Page 75