Safety equipment for solar electrical systems used in South Africa solar power plants includes solar electrical parts.
Distribute electrical power in a compliant and neat manner by using solar distribution boards.
Select pre-wired control panels for quicker installation and for the elimination of messy wiring.
Add labelled breakers, neutral links, and busbars for tidy wiring.
Use solar combiner boxes to group PV strings and protect circuits.
For small arrays and simple layouts, select combiner boxes which have two strings.
For larger arrays and complex inputs, choose four-plex switches.
A battery box is provided for secure and organized battery connections and routing. This box features an empty compartment.
The compartment is designed to house the battery.
Use DC surge protection devices for string-level lightning protection.
Select 500V DC surge protection devices for lower voltage arrays.
Select 1000 V DC surge protection devices for modern high voltage PV strings.
The earth spikes are usually installed in the earthed (PE) conductor and must be adequately secured to the main earthing terminal.
For safe selection of the inverter and grid, use a manual changeover switch.
Add automatic changeover switches for fast, reliable source switching.
Supply AC power through a suitable voltage regulator which can automatically cut out the supply in case the voltage rises or falls beyond set limits.
Disconnect the array from the electrical system and lock out the main switch during maintenance to prevent the possibility of electrical shock.
Select PV Isolators suitable for 1200 Volts DC and full load current rating.
Use fuse switches for robust isolation and fuse accessibility.
Fit DIN fuses for feeder protection on distribution boards.
For smaller feeders and loads which are controlled, select 125A DIN fuses.
In the selection of fuse links for distribution circuits the larger 160 A. DIN type fuse links should be used.
Install secure DC string fuse holders from the PV product line for mounting DC fuses.
Match 10x38mm fuse holders to the correct PV fuse rating.
They come in 15 amp, 20 amp, 25 amp and 30 amp current ratings.
Protecting cables and PV module strings with correct fusing is essential to prevent fires from occurring.
Incorrectly sized fuses can fail to blow in the event of a short circuit, causing a fire.
Invest in well-designed and high-quality enclosures to distribute heat evenly.
Add control relays for automation and include interlocks on the inverter.
Select the modules necessary for the measurement of current and voltage as well as for the measurement of the energy.
Follow SANS wiring practice for isolation, earthing, and protection.
During maintenance visits clear labelling can speed up fault tracing.
To ensure reliable site support from SP-Energy, order solar electrical equipment from them.
Switchgear & Protection
Fuse and Holder
Combiner Box Solar
