Sunway NT 2600, NT 6000, NT 4000 Line Error UAC3 Overvoltage, Line Error UAC3 Undervoltage

3.3Fault indications

Your solar inverter operates fully automati- cally and maintenance-free. However, if operational faults occur due to external or internal causes, these will be displayed on the screen.

· AC over/undervoltage (3-phase)

Your solar inverter monitors the limits of minimum and maximum permissible

3-phase grid voltage. If these limits are exceeded (Umin = 184 V, UN = 230 V, Umax = 264 V), the solar inverter will switch off and will only start up again when the voltage value is within the limits. The fault cut-out can be triggered even by very brief overvoltages and undervoltages.

Display for AC overvoltage:

Line 1	Error: UAC_3
Line 2	Overvoltage

Display for AC undervoltage:

Line 1	Error: UAC_3
Line 2	Undervoltage

· AC over/undervoltage (1-phase)

Your solar inverter monitors the limits of minimum and maximum permissible grid

voltage in the feed-in phase. If these limits EN are exceeded, the solar inverter will switch

off and will only start up again when the voltage value is within the limits.

Display for AC overvoltage:

Line 1	Error: UAC_1
Line 2	Overvoltage

Display for AC undervoltage:

Line 1	Error: UAC_1
Line 2	Undervoltage

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