3-phase system AC 500 – 600 V

All inverters with degree of protection IP20/NEMA 1 and IP55/NEMA 12K with a power supply of 3 × AC 500 to 600 V can also be operated with 1 × AC 500 to 600 V at device terminals L1 and L2, taking into account a derating of 50% of the output current. Application example with SWER (Single-Wire Earth Return) supply systems.

Inverters with IP66/NEMA 4X degree of protection are excluded from this rule.