Our Glossary contains information and descriptions about terminology used throughout the site.

Find out what phrases like watts, volts and 3 phase electricity mean.

MS MILLISECOND – 10 milliseconds (a hundredth of a second)

KW Kilowatt (symbol: kW) is a unit of electric power

KVA Kilovolt-amps – simply means 1,000 volt amps. KVA are equal to kilowatts divided by the power factor. Eg. 3KVA – 2.400KW

W Watts – Watt is the unit of power. One watt is defined as the energy consumption rate of one joule per second. One watt is also defined as the current flow of one ampere with voltage of one volt

V Volts – The volt is the derived unit for electric potential, electric potential difference, and electromotive force

VAC Volts Alternating Current. – how much electrical energy can flow through an electrical outlet

VA Volt-ampere – is a measurement of power in a direct current (DC) electrical circuit

DC Direct Current – electrical current that normally flows in one direction only. This is the type of electrical power that is produced by fuel cells, batteries and generators.

AC Alternating current – electrical current frequently reverses direction. AC power is the type of electricity most commonly used in homes and offices.

Hz Hertz – the unit of measurement for an electric cycle

VDC Volts of Direct Current – the type of current that comes from a battery or the power supplies of many electronic devices.

A Amp – is electrical current

AH Ampere Hour – is a unit of measure of the rate of electron flow or current in an electrical conductor.

MPPT Maximum Power Point Tracking – is an electronic DC to DC converter that optimizes the match between the solar array (PV panels), and the battery bank or utility grid.

APPARENT POWER Apparent power is equal to the product of the volts and amps.

3 PHASE ELECTRICITY Three-phase electricity – the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. A three-phase system is usually more economical than an equivalent single-phase or two-phase system at the same line to ground voltage because it uses less conductor material to transmit electrical power.

LEAD CRYSTAL® BATTERY Lead Crystal® battery – the highest performance lead batteries in the world. Lead crystal® batteries have a float life of 18-20 years at 20ºC. Crystal batteries will produce twice the power potential of any deep cycle lead acid or lead gel batteries.

INVERTER Inverter – a device that converts DC or Direct Current power (the type of electricity stored in batteries) into AC or Alternating Current power (the type of power we use at home)

MODIFIED SINE WAVE Modified Sine Wave – The less expensive ‘square’ sine wave inverter generates a simpler square wave form because it is easier and cheaper to switch the output on and off, or in other words, changing the alternating current’s “negative” and “positive” leads continuously.

PURE SINE WAVE INVERTER Pure Sine Wave Inverter – also known as a Smooth Sine Wave or ‘true’ sine wave inverter allows you to safely and more efficiently power all of your electronic devices with it. More expensive or sensitive devices rely on the smooth sine wave to function properly and without undue noise or heat.