Operation
The
∼If the AC voltage or frequency vary outside these limits, the inverter will stop selling. If the inverter stops selling, the MATE3 will show the reason. Sell Status messages are listed on page 43.
∼If the AC voltage or frequency vary outside the maximum limits, the inverter will also disconnect from the utility grid. The Radian inverter’s
When power is returned to the utility grid, it may possible to make the utility meter run backwards. The net result would be to sell power to the utility company. However, this depends on whether there are other loads in the system. Loads on the main panel (not on the inverter’s output) may consume this power as fast as it is generated, preventing the meter from running backwards. In this case, the result of selling would be to reduce the consumption of AC power, not reverse it.
The amount of power an inverter can sell is not equal to its specified output wattage. Its maximum selling output is 7.68 kW. However, output will vary with inverter temperature, battery type, and other conditions.
∼A good guideline is that the renewable source should be sized to continuously deliver no more than 85% of the inverter’s specified wattage (per inverter, in a
∼This recommendation is specifically for the inverter’s
UPS (Uninterruptible Power Supply)
In the event of utility grid failure, UPS mode allows the inverter to switch to its inverting mode almost instantaneously. This allows the system to support sensitive AC loads without interruption.
The transfer speed in this mode has been reduced so that if the AC input power is disconnected or a scheduled disconnect occurs, the transfer speed will be less than 4 milliseconds.
CHARGING:
In this mode, when the charger is enabled, the Radian will use the AC source to charge the battery bank. (See page 20.) It will proceed through the entire battery charging cycle. After the end of the Float timer, it will continue to alternate between Silent and
BENEFITS:
This mode will maintain constant power to the loads with virtually no drop in voltage or current.
In this mode, the inverter will offset the loads with excess renewable energy if it is available from the batteries. (See page 19 for more information on the Offset function.)
NOTES:
The Support and
Due to the need for the Radian inverter to react quickly to AC source fluctuations, it must remain fully active at all times. The inverter requires a continuous consumption of 42 watts.
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