Photovoltaic inverter arc canopy

What causes a series PV DC arc fault?

Series PV DC arc faults can occur when a circuit conductor is broken, or a connection is opened while current is flowing. This has been a problem with DC connectors, such as when they are not securely mated.

How do PV inverters work?

Originally, PV inverters were designed with transformers to boost converted alternating current (AC) voltage to the higher utility service levels. This transformer provided galvanic isolation of the DC side of the PV system from the AC conductors of the premises wiring system and its grounding electrode system.

What is a DC optimized inverter?

Our DC optimized inverter solution increases energy production through panel-level MPP tracking and up to 175% DC oversizing. Enable more uptime with a modular system design and keep PV panel in optimal condition with the built-in nighttime PID (Potential Induced Degradation) rectifier.

How is a ground fault detected in a PV inverter?

Because the PV array DC circuits were referenced to ground on the DC side of the inverter, the first ground fault detection was simply detecting current flow through the DC ground reference, such as by a fuse in the ground reference path.

How to reduce ground fault occurrences in PV DC?

Reductions in the number of DC connections and improvements in wire management methods can further reduce ground fault occurrences. PV DC ground fault detection is an important safety feature that indicates when either the positive or negative conductor unintentionally establishes a lower resistance (fault) path to ground.

How does synergy inverter pre-commissioning work?

Onsite. The Synergy inverters’ innovative Pre-commissioning feature enables easy onsite system validation with full visibility of any wiring, communication, isolation or DC polarity issues. Know everything is working correctly before leaving the site and well in advance of grid connection. Move faster with identical, lightweight, modular units.