Solar Lattice

Symptom

Reactive compensation voltage instability

ID
symptom:svg-voltage-instability
IRI
https://solarlattice.org/kb/symptom/svg-voltage-instability
Status
active
Also known as
SVG voltage stability alarm, Fault7020

Monitoring systems can read it from Modbus register 0x841B, bit 2, where it is listed at the Trip Fault 7 level. Do not confuse it with Fault7010, which is a separate alarm for PID voltage stability. First, watch the inverter for 5 minutes to see if the alarm clears by itself. If the alarm stays or comes back, contact the manufacturer's after-sales service. In Q(U) mode the inverter changes its reactive compensation as the grid voltage changes, so check the reactive power settings and the grid voltage.

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Referenced by

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