Solar PV systems are extremely reliable but like most technologies an annual health check and test will keep them working in optimum condition to maximise performance. Our engineers are experienced with all types of inverters and will perform a full test on all the electrical components that make up the PV system along with following the inverter manufacturers annual maintenance regime.
The district network operator (DNO) will also require larger systems to have periodic testing of the systems protection settings to ensure they continue to comply with disconnection from the grid in line with the original specifications.
|AC Isolators||Remove covers and check connections/operation|
|DC Isolators||Remove covers and check connections/operation|
|String Tests||Test voltage and current on individual strings.|
|Test irradiance and module temperature and record results|
|Inverter Cleaning||Check heat sink is free from dirt|
|Remove cooling fan and clean*|
|Turn off DC string isolators and switch inverter DC isolator on and off to clear carbon|
|Inverter running status||Check for normal sound emitted while running|
|Run through fault code menu|
|Check inverter settings are correct|
|Test G59 disconnection and re-connection speed is in line with DNO specification|
|Inverter Wiring||Check connections are secure|
|Check wiring for insulation damage|
|Check port covers are in place|
|Generation Meter||Check LED status and CT clamps|
|Record meter reading and analyse|
|PV Modules||Check condition of PV modules and recommend cleaning where required|
|Check MC4 connector plugs are not exposed|
|Check array shading and make recommendations|
|Mounting System||Check mountings are secure and tighten if required|
|Containment||Check containment fixings are secure and condition of cable trays|
|Check cables secure in containment|
|Fireman Switches*||Test switch off and re-energise|
|G59 Relay*||Test protection settings and timed disconnect|
|Reports||Service paperwork and maintenance recommendations issued|
Option 2 -Full Operation and Maintenance
Our full operation and maintenance package includes 365-day monitoring of the generation system (additional monitoring equipment may be required at extra cost), 1 annual service visit, agreed number of call out visits and replacement of any faulty components at cost prices.
Solar Panel Cleaning
Solar panels have self-cleaning glass but in some cases heavy bird fouling can cause the system to become inefficient, we can arrange for specialist solar cleaning when required.