OPERATION

ENERGY MANAGEMENT MODE

UTILITY GRID

 

AC

 

IN BRIEF

INVERTER/ CHARGER

DC

BATTERY

AC

 

AC LOADS

 

The purpose of this mode is to manage how utility power is used. One method is to charge the batteries at a favorable time and then use the power later. This is often desirable when time of day metering is available. A solar array is not required, but can be used to reduce the discharging of the battery. Since the most expensive power is often during the afternoon, the solar array may be a valuable addition. This mode is an alternative to utility interactive systems. This mode does not involve “selling” power into the utility grid and therefore does not usually require the approval of the utility. The same system is also able to operate as a utility back-up system to provide power when an outage occurs.

In order to disconnect from the grid during a specific period of the day and operate only as an inverter, a window of time is created during which battery charging is allowed. Outside this window, the inverter will power the load from the battery. If the battery gets low, the system will transfer back to the utility and recharge the battery.

To operate the system in Energy Management Mode, set up the system as follows:

•Connect utility AC power to the inverter’s AC HOT IN 1 and NEUTRAL IN 1 terminals.

•Connect AC loads to the inverter’s AC HOT OUT and NEUTRAL OUT terminals.

•Set the GRID (AC1) AMPS AC menu item, in the AC INPUTS (11) menu heading, to match the amperage of the circuit supplying AC to the inverter input (See UTILITY SUPPORT/OVERLOAD PROTECTION on page 82).

•Set the SET GRID USAGE menu item, under the INVERTER SETUP (9) menu heading, to FLT.

•Set the SET START CHARGE TIME menu item, under the GRID USAGE TIMER (18) menu heading, to the time the inverter connects to the utility. This is the beginning of the time the battery charger is allowed to operate and the end of the inverter operating period.

•Set the SET END CHARGE TIME menu item, under the GRID USAGE TIMER (18) menu heading, to the time that the inverter disconnects from grid and begins to run the loads from the battery. At this time, the battery charger will stop charging. If the battery voltage falls to the LOW BATTERY TRANSFER VDC menu item setting during the inverter operating time period, the AC loads will be reconnected to the utility grid and the battery will be charged to the FLOAT VOLTS DC or LOW BATTERY CUT IN VDC setting, whichever is lower. This prevents over-discharging the battery. The battery will be charged until the next END CHARGE TIME is reached.

•Set the START BULK TIME menu item under the BULK CHARGE TRIGGER TIMER (15) menu heading to a time after the START CHARGE TIME menu item setting. This allows delaying of the bulk charge cycle to a later time. Before the bulk charge is started, the battery will be charged only to the float voltage level. The START BULK TIME is usually set to occur during the lowest cost rate period. Adjusting the SET FLOAT VOLTS DC menu item to just above the normal at rest voltage (12.6 VDC) will reduce the amount of charging that occurs in the between time periods, yet will allow limited charging to prevent sulfation of the battery while being partially discharged.

Page

90

2001 Xantrex Technology, Inc.

Telephone: 360/435-8826

SW Series Inverter/Charger

5916 - 195th Street N. E.

Fax: 360/435-2229

Part No. 2031-5

Arlington, WA 98223

www.traceengineering.com

Rev. C: February 2001

Page 97 Page 99
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Xantrex Technology SW Series owner manual Energy Management Mode, INVERTER/ Charger Battery AC Loads
Page 97 Page 99

SW Series specifications

Xantrex Technology has established itself as a leader in innovative power solutions, and its SW Series inverters epitomizes this commitment to quality and efficiency. Designed for both standalone and grid-tied applications, the SW Series offers versatile power management for a range of residential and commercial needs.

At the heart of the SW Series is its advanced pure sine wave output, ensuring clean and reliable electricity suitable for sensitive electronics. This feature makes it an excellent choice for applications such as solar energy systems, where it provides high-quality power for a variety of devices, from household appliances to complex machinery.

One of the key characteristics of the SW Series is its modular design, which allows for easy installation and scalability. This modularity enables users to expand their power system as their energy needs grow, making it an ideal choice for both small and large installations. The inverters come equipped with a user-friendly interface, providing clear information on system performance, battery status, and more, ensuring that users can effectively monitor and manage their energy consumption.

The SW Series inverters also incorporate cutting-edge technology, such as the patented Power Factor Correction (PFC) feature, which optimizes energy efficiency by reducing harmonic distortion. This translates into less wasted electricity and lower energy costs, making it an environmentally friendly option for users looking to reduce their carbon footprint.

Another notable feature of the SW Series is its ability to operate in extreme conditions. Built with robust components and advanced thermal management systems, these inverters can withstand a wide range of temperatures and environmental challenges, ensuring reliable performance in various settings. This durability makes them suitable for off-grid applications, including remote cabins, RVs, and boats.

Furthermore, the SW Series supports a variety of battery types, including lithium-ion, AGM, and gel batteries, offering flexibility for users to choose the best energy storage solution for their needs. The sophisticated battery management system ensures optimal charging and discharging, prolonging the lifespan of the batteries and enhancing the overall efficiency of the power system.

In summary, Xantrex Technology's SW Series inverters stand out for their pure sine wave output, modular design, energy efficiency features, and robust performance in challenging conditions. With their versatility and advanced technology, they cater to the evolving needs of today’s power consumers, making them a compelling choice in the modern energy landscape.
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