Outback Power Systems GFX1312, GFX1424, GFX1548 Generator Sizing

Planning

900-0113-01-00 Rev A 13

Generator Sizing

A generator should be sized to provide enough power for all the loads and the battery charger.

 Available generator power may be limited by ratings for circuit breakers and/or generator connectors.

 The generator must be able to provide current to all inverters on a given phase or leg. Minimum generator

wattage* is usually recommended to be twice the wattage of the inverter system. Many portable generators

may not be able to maintain AC voltage or frequency for long periods of time if they are loaded more than

80% of rated capacity.

(*after de-ratings for peak versus continuous power, for load power factor considerations, for altitude, and

for ambient temperature.)

 A generator that is to be installed in a building should not have a bond between the neutral and ground

connections.

 In addition, if a split-phase 120/240 Vac generator is powering a single-phase 120 Vac inverter system with

no other compensation, it is required to be at least twice the wattage of the inverters. (A split-phase

generator that is heavily loaded on one output leg may suffer severely from balancing issues.) The OutBack

FW-X240 or PSX-240 balancing transformers may compensate for this condition.

Contents

Main Page Important Safety Instructions READ AND SAVE THESE INSTRUCTIONS! Audience Symbols Used Symbol Description Definitions The following is a list of initials, terms, and definitions used in conjunction with this product. 2 Table 1 Terms and Definitions Term Definition General Safety Personal Safety WARNING: Personal Injury Inverter Safety WARNING: Lethal Voltage WARNING: Burn Hazard Battery Safety WARNING: Explosion, Electrocution, or Fire Hazard 4 IMPORTANT: Recycling Information Earth 911, USA Environmental Protection Agency, USA Keep America Beautiful, USA OurEarth.org, USA National Institute of Recyclers, Mexico Natural Resources Canada Office of Waste Management, Canada EuroRecycle.net, Europe Table of Contents Table of Contents List of Tables List of Figures Introduction Welcome to OutBack Power Technologies Figure 1 GFX Series Inverter/Charger Models Introduction Components and Accessories Table 2 Components and Accessories Installed Components Included in Box Planning Applications Figure 3 Applications (Example) 12 Renewable Energy Battery Bank Generator Generator Sizing A generator should be sized to provide enough power for all the loads and the battery charger. Page Installation Location and Environmental Requirements Dimensions Tools Required Mounting Terminals and Ports Figure 5 Terminals, Ports, and Features WARNING: Shock Hazard Grounding DC Wiring Page AC Wiring Figure 10 AC Terminals Multiple AC Sources Figure 11 Multiple AC Sources Accessory Wiring Figure 13 ON/OFF Jumper and Connections Figure 12 Accessory Connections AUX Wiring Figure 14 AUX Connections for Vent Fan (Example) Figure 15 AUX Connections for Diversion (Example) 24 Automatic Generator Start (AGS) Figure 16 Two-Wire Generator Start (Example) Figure 17 Three-Wire Generator Start (Example) Single-Inverter Installations Multiple-Inverter Installations (Stacking) Figure 19 OutBack HUB4 and MATE IMPORTANT: 28 Classic Series Stacking (Dual-Stack) Figure 20 Example of Classic Series Stacking Arrangement Page Parallel Stac u king (D al-Stack and Larger) Page 32 Three-Phase Stacking Figure 24 Example of Three-Phase Stacking Arrangement (Three Inverters) When installing a three-phase system, the following rules must be observed. IMPORTANT: Page Functional Test Index F P O M R U X W V