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Solar Inverters - Chargers - Battery Based Off-Grid

Magnum - Midnite  DIY - SolArk 

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Cost Effective Battery Based Inverters

A battery based inverter / charger is an electronic device that converts direct current (DC) power from batteries into alternating current (AC). Each type of inverter has different features that makes it suitable for your unique cabin, backup or off-grid applications.

Magnum - Midnite DIY

IQ8 Inverter
Magnum MS4448PAE

4400 Watt
48 Volt

IQ8 Inverter
Magnum MS4024PAE

4000 Watt
24 Volt

Sunny Boy Inverter
Midnite DIY Hybrid

5000 Watt
48 Volt

Midnite DIY Hybrid

3000 Watt
24 Volt


Sol-Ark 5 kW FAQ
Sol-Ark 5
Hybrid 5 kW

Sol-Ark 8 kW
Sol-Ark 8
Hybrid 8 kW

Sol-Ark 12 kW
Sol-Ark 12
Hybrid 12 kW

Sol-Ark 15 kW
Sol-Ark 15
Hybrid 15 kW

Sol-Ark 5 kW FAQ
Sol-Ark 5 P
Hybrid 5 kW

Sol-Ark 8 kW
Sol-Ark 30 kW
Hybrid 30 kW

Sol-Ark 12 kW
Sol-Ark 12
Hybrid 12 kW

Sol-Ark 15 kW
Sol-Ark 15
Hybrid 15 kW

Grid-Interactive Voltage Drop Wire Size Design Considerations

voltage dropIdeally, for off-grid / grid-interactive and on-grid inverter wiring, the total voltage drop for the grid-tied AC side should be <1% when possible. When we design complete systems, we do our best to stay under 1.5% (General industry acceptable tolerance is 1 - 1.5% AC Vdrop). The max. of 1.5% AC voltage drop is all about maximizing inverter up time during Utility voltage swings.

Grid Tie Inverters Enphase, SMA, Sol-Ark and SolarEdge residential and light commercial applications.

Inverters / Chargers Off-Grid, stand alone, bimodal, battery based powering home, cabin, or Marine applications.

Inverters / chargers are solid-state electronic devices used in solar and wind energy system. The inverters Blue Pacific Solar sell employ the latest in power electronics to produce AC power from a DC power source. The power source can be a battery bank, solar panels directly or the electricity produced by a wind turbine. Inverters use a variety of different circuits and designs but we have narrowed those down to a few inverter companies that manufacture durable, reliable inverters with he longest guarantees. Inverters use different switching devices and control methods to affect the electrical waveform properties. As part of a complete solar or wind power system, inverters may also include functions for battery charging, monitoring, system control and MPPT (maximum power point tracking).

Off-grid, or battery-based, inverters convert DC electricity from a battery bank to AC. In this case, the solar array and/or wind generator is used to charge the batteries via a charge controller and only the power demanded by the loads is inverted to AC. Because these systems do not have access to the electrical grid, it is important to properly size the inverter and battery bank. The nameplate capacity of an inverter is measured by its maximum continuous output in watts. The inverter capacity limits the sum of all AC loads you can operate simultaneously. Most AC appliances list their consumption on a tag located near the power cord and/or in the equipment manufactures owner's manual. You will need to add up the consumption of all the appliances you may need to operate at once and that will represent your minimum inverter size. If your appliances include induction motors, like washers, dryers, dishwashers, furnace electronic controls and large power tools, be sure to select an inverter with surge capability to accommodate the higher start-up loads. You can start this process by listing all the equipment you want to run and how long you need to run it each day on the average then send us your list. Blue Pacific Solar staff of Solar Energy Consultants can guide you through the process of off-grid system design.

Off-grid inverters will output either pure sine wave or modified sine wave AC electricity. Pure sine wave inverters can closely mimic utility grid power and will run virtually any AC appliance. Sine wave inverters with cleaner waveforms, such as the Exeltech XP line, are often desired for sensitive audio or telecommunications equipment. Modified sine wave inverters are an economical choice when waveform is not critical. They often have a high surge capacity for motor starting and generally retain good efficiency when partially loaded. Unfortunately, this type of inverter may damage or fail to operate some sensitive appliances such as rechargeable tools and flashlights, laser printers, copiers, variable speed drives. Some audio equipment will have a background buzz when operated or some ceiling fans that are speed modulated with a speed control may have a problem with a modified sine wave inverter. Most battery-based inverters found on our web site (portable inverters being the exception) supply standard 120VAC / 60Hz single-phase outputs. The SMA Sunny Island, Magnum MS-4024, and OutBack FX Series inverters can be stacked in pairs for 240VAC. Pairs of OutBack and Sunny Island inverters can also be wired in parallel to provide more output power at 120VAC single-phase, or 120/240VAC split-phase. The Magnum MS-PAE inverters deliver 120 / 240VAC power from one inverter, and can also be wired in parallel for greater power output.

Battery-based inverters may interfere with radio and television reception, cause noise on telephones or buzz in audio equipment. Interference can be minimized by using pure sine wave inverters and by locating the inverter as close to the batteries as practical, twisting together the cables that connect the inverter to the battery, running AC lines separate from other wiring (such as telephone wires) and locating the inverter away from appliances that are susceptible to interference. All inverters cause interference with AM radio reception. Battery-based inverters require high current from a battery bank to operate large loads. A 2kW inverter will draw nearly 200 A from a 12 VDC battery bank. Large cables and good connections are required for safe operation.

Grid interactive, or bimodal, inverters can export power to the utility grid, but can also supply emergency backup power for critical loads during a grid outage. These inverters use a battery bank for energy storage, and include an automatic transfer switch that enables them to safely operate off-grid during a blackout. Magnum Energy is a great utility interactive inverter and we use the Magnum inverter on many of our home power emergency backup kits.

The grid interactive inverter is connected to the battery bank (12, 24, or 48 VDC), then to an AC subpanel for critical loads, and the building's utility main panel. The battery bank is charged by the solar array connected through a charge controller. Under normal conditions, it operates like any grid-tie inverter and will export any excess power produced by the solar array. During a utility blackout, the inverter will automatically disconnect from the grid, and supply AC power to the critical load subpanel by drawing energy from the battery bank. Blue Pacific Solar has a home emergency backup system that will operate with SMA or Enphase MicroInverters using your solar array to recharge the batteries during blackouts if the system is under 3kW or 3,000 watts or about 12 235 watt solar panels. When the outage is over, the inverter will automatically switch back to grid-tie operation and recharge the batteries. The Outback Radian GS grid interactive inverters have split-phase 120/240 VAC output from a single inverter. The Outback GFX and SMA Sunny Island inverters have 120 VAC output, but two inverters can be "stacked" for 120/240 VAC output. The SMA Sunny Island is designed to interact with a Sunny Boy grid-tie inverter to create an "AC Coupled" power system.

Solar Inverters Features and Benefits

  • DYI Solar Inverters
  • Cost of Solar Inverters
  • Net Metering Panel Kit
  • Federal Solar Tax Credits
  • Solar Battery Systems
  • Grid Tie Solar Inverter
  • Solar Backup Costs
  • Buy Solar Inverters
  • Installing  Inverters and Panels
  • Commercial Inverters Systems
  • Solar Energy DIY Installation
  • Solar Power Inverters
  • Powerpack Solar Panel Cost
  • Home Kits, Off-grid Systems
  • Roof Ground Mount
  • Utility Rebates
  • Best Solar Inverters
  • hybrid inverters

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