3-phase system AC 380 – 480 V

All inverters with degree of protection IP20/NEMA 1 and IP55/NEMA 12K with a power supply of 3 × AC 380 – 480 V can also be operated with 1 × AC 380 – 480 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 degree of protection IP66/NEMA 4X are excluded from this rule.

Inverters with degree of protection IP55/NEMA 12 with the power ratings 200 kW and 250 kW are excluded from this rule.