Editing Uninterruptible power supply (section)

===Outdoor use===
When a UPS system is placed outdoors, it should have some specific features that guarantee that it can tolerate weather without any effects on performance. Factors such as temperature, [[humidity]], rain, and snow among others should be considered by the manufacturer when designing an outdoor UPS system. [[Operating temperature]] ranges for outdoor UPS systems could be around −40&nbsp;°C to +55&nbsp;[[Celsius|°C]].<ref>Refer to safety standard IEC 60950-22 or a local derivative according to location e.g. EN 60950-22 (Europe); UL 60950-22 (USA)</ref>

Outdoor UPS systems can either be pole, ground (pedestal), or host mounted. Outdoor environment could mean extreme cold, in which case the outdoor UPS system should include a battery heater mat, or extreme heat, in which case the outdoor UPS system should include a fan system or an air conditioning system.

[[File:Sunny Boy 3000.jpg|thumb|right|300px|Internal view of a solar inverter. Note the many large capacitors (blue cylinders), used to store energy briefly and improve the output waveform.]]
A '''solar inverter''', or '''PV inverter''', or '''solar converter''', converts the variable [[direct current]] (DC) output of a [[photovoltaic]] (PV) [[solar panel]] into a [[utility frequency]] [[alternating current]] (AC) that can be fed into a commercial electrical [[utility grid|grid]] or used by a local, [[off-grid]] electrical network. It is a critical [[Balance of system|BOS]]–component in a [[photovoltaic system]], allowing the use of ordinary AC-powered equipment. Solar inverters have special functions adapted for use with photovoltaic arrays, including [[maximum power point tracking]] and anti-[[islanding]] protection.