Inverters. Inverter Functions Change DC to AC Change DC to AC Increases or decreases voltage from...

Inverters

Inverter Functions Change DC to AC Increases or decreases

voltage from array voltage to: 120 Volts 240 Volts 208 Volts

Regulate Frequency 50 HZ 60 HZ

Feed Electricity back to grid

Battery Charging

Input Ranges

Inverter Wave Forms

Square wave

Modified Square Wave

Sine Wave

Stand Alone Inverters Battery based

Direct Utility Intertie No Battery

MultiFunction Battery charging grid tie

Stand Alone Inverters

Stand Alone

Stand Alone Inverters

Considerations Maximum load Maximum surge AC output voltage Input battery

voltage 100 watts to 60 KW Pure sine &

modified sine wave available

High Surge

Modified Square or Modified Sine Wave Stand Alone

Inverters Types

Xantrex TR Series Samlex

Least expensive - $.29 - .66/watt Some electronic devices may buzz Clocks don’t run accurately Can’t charge battery packs, run laser printers, copiers, light

dimmers, variable speed tools, Silicon Controlled rectifiers High Surge High Efficiency

Xantrex TR Series Inverters

12 & 24 DC Volt Input

120 volt AC 1500 – 3600 watts Modified sine wave Battery charging

capability $.39 - .58/watt

Sine wave Stand Alone Inverters

Magnum

Makes sine wave & modified sine output inverters

600 - 4400 watts 12 – 48 volt models 120 & 240 models $.50 - $1.19/watt

Over Current Protection

Sizing Overcurrent Protection

Divide rated output by lowest voltage that inverter will operate at to get maximum AC amps

Divide maximum AC amps by inverter efficiency to get maximum DC amps

Multiply maximum DC amps by 1.25 to avoid exposing conductor or overcurrent protection to more than 80% of its rated ampacity

Example of Conductor & Circuit Breaker Sizing

2500 watts / 21 V = 119 amps AC 119 AC amps / .93 = 128 amps DC 128 x 1.25 = 160 amps (for

continuous duty) Conductor must have ampacity of

160 amps or more. Circuit Breaker must also have amp

rating of at least 160 amps also, but less than or equal to the ampacity of conductor used

Direct Grid Tie Inverters

Direct Utility Tied Inverters

Direct Grid Tie Inverter

Direct Grid Tie

Grid Tie PV System

Balance of System: Grid Tie

Sunny Boy Inverter

Sunny Boy with DC Disconnect

Enphase Microinverters

http://www.youtube.com/watch?v=Fzj2a-9M4qo

http://www.youtube.com/watch?v=RC3mNUhcx6o

Dual Function Inverters

Multi-Function Inverters

With Batteries & Grid

Xantrex XW Battery Based Inverter

http://www.youtube.com/watch?v=I91mHLu1Guw

Xantrex XW Battery Based Inverter

Outback Multifunction

Multi – Function Inverters

Multi Function Inverters

Accessories

Inverters. Inverter Functions Change DC to AC Change DC to AC Increases or decreases voltage from...

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