3. About Product
3.1 About Three-Phase Microinverter
The world’s rst three-phase microinverter with Reactive Power Control, can be widely used in the general
230V/400V three-phase electric power distribution. Each microinverter, with up to 6 PV modules connected,
simplies the installation process and ranks among the most cost effective solutions for commercial and industrial
installations.
3.2 About Sub-1G technology
Sub-1G technology is particularly useful for PV microinverters and differ from, say, 2.4GHz technologies in that they
have substantially larger range and better interference suppression performance.
3.3 Highlights
• Three-phase output, more suitable for commercial and industrial applications.
• Each microinverter supports up to 6 modules, faster installation and lower cost.
• Up to 2250VA output, adapted to mainstream high-powered PV modules.
• With Reactive Power Control, meets the require- ments of EN50549-1:2019, VDE-AR-N 4105:2018,
TOR Erzeuger : 2019-12, etc.
• The Sub-1G wireless solution enables the stable communication when installed for commercial and industrial
stations.
© 2020 Hoymiles Power Electronics Inc. All rights reserved.
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Three-phase Microinverter HMT-1800/2250 About Product
Range of Sub-1GHz wireless:
Unlike WiFi and Zigbee, who both operate on the 2.4 GHz band, Sub-1GHz
operates on the 868 MHz or the 915 MHz bands. Usually, Sub-1GHz wireless
transmission offers 1.5-2 times more distance coverage than the 2.4Ghz spectrum.
Interference:
Sub-1GHz wireless can handle interference better. This is because they operate
on a lower frequency which can communicate better between PV modules and
rooftops, and especially useful in an industrial or commercial PV power plant. Thus,
the communication between the microinverters and the DTUs will be more stable.
Lower Power Consumption:
Sub-1GHz wireless typically use less power than WiFi or Zigbee.
Because of the long range and better interference suppression performance, Sub-1GHz networking is particularly
well-suited to rooftop PV power stations.
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