Offgridtec Solar-Direct 1800Wp Bifacial PV System with HMS-1600-4T – 5m HMS Connection Cable

Offgridtec’s Solar Direct turnkey systems offer you an excellent way to generate part of your household’s electricity needs yourself and thereby reduce your electricity costs. This system includes four Luxen Solar 450W Full Black bifacial solar modules with a total module output of 1,800 Wp, the Hoymiles HMS-1600-4T microinverter with 1,600 VA output power, and an HMS connection cable in a length of your choice. The Hoymiles DTU-Lite-S is available as an option; it collects the inverter’s operating data via a Sub-1G wireless connection and transmits it via Wi-Fi to the S-Miles Cloud monitoring system.

Important installation note: The solar system has a nominal inverter output power of 1,600 VA and is not intended for independent commissioning by plugging it into a standard household outlet. Connection to the home electrical system and commissioning must be performed by a qualified electrician in accordance with applicable electrical regulations and technical connection requirements. The existing electrical installation and the suitability of the intended connection components must be checked in advance.

• Half-Cut Cell Technology
• Reduced risk of hotspots
• Efficient energy generation through independent MPP trackers
• High system reliability

The complete solar system includes:

• 4x Luxen Solar 450W Bifacial Solar Module TopCon Luxneri Series N5 Full Black
• 1x Hoymiles HMS-1600-4T microinverter
• 1x Hoymiles HMS Field Connector (length options: 5 m – 10 m – 15 m). A qualified electrician must verify suitability for the intended grid connection solution.
• 1x Hoymiles Disconnect Tool for AC Box HMS Microinverter
• Optional: Hoymiles DTU-Lite-S Wi-Fi Data Transmission Unit for HMT / HMS

Luxen Solar 450W bifacial solar module

The 450W bifacial Full Black solar module from Luxen Solar’s Luxneri N5 series (MPN LNDX-450ND) utilizes state-of-the-art solar technology. With innovative LECO N-TOPCon cell technology and a 96-cell half-cut layout, it offers high energy efficiency. The SMBB half-cut cell technology further contributes to optimizing performance. The monocrystalline module is characterized by good anti-PID properties, low LID values, and high hotspot resistance. The Full Black design is suitable for a variety of installation environments, such as residential buildings.

• LECO N-TOPCon Cell Technology
• SMBB Half-Cut Cell Technology
• Low system costs (BOS) and levelized cost of electricity (LCOE)
• Bifacial cell module technology
• Good anti-PID and low-LID properties
• Reduced risk of hotspots
• 3 bypass diodes
• Module efficiency of 22.52%

Technical Specifications

• Maximum power: 450 W
• Module voltage (Vmp): 30.08 V
• Max. current (Imp): 14.96 A
• Open-circuit voltage (Voc): 35.21 V
• Short-circuit current (Isc): 16.02 A
• Module efficiency: 22.52%
• Max. system voltage: 1500 V DC
• Operating temperature range: -40 °C to +85 °C
• Dimensions: 1,762 x 1,134 x 30 mm
• Cells: 96 (6x16)
• Protection rating: IP68
• Connection: MC4
• Weight: 24 kg

Hoymiles HMS-1600-4T Microinverter

The HMS-1600-4T (MPN: HMS-1600-4T) from Hoymiles is a compact microinverter for grid-connected PV systems. It is suitable for connecting up to four solar modules, each with a recommended power output of 320 W to 540 W+. The low start-up voltage of 22 V and the wide MPPT voltage range from 16 to 60 V allow it to be used with a variety of compatible PV modules.

Compared to the previous HM series, the HMS-1600-4T offers, among other features, sub-1G wireless communication for connecting to compatible Hoymiles data transmission units. Integrated protection functions and independent power optimization of the modules ensure reliable system operation.

• Independent MPP trackers for optimizing energy generation
• Reduction of the effects of varying module conditions, such as partial shading
• High MPPT accuracy
• High system reliability
• CEC peak efficiency of 96.7%
• Integrated protection functions
• Compact design
• Designed for long-term operation
• Manufacturer-specified compliance with standards including EN 50549-1:2019, VDE-AR-N 4105:2018, VFR2019, IEC/EN 62109-1/-2, IEC/EN 61000-6-1/-2/-3/-4, and IEC/EN 61000-3-2/-3

Technical Specifications

• Recommended module power: 320 W to 540 W+ (per module)
• MPPT voltage range: 16–60 V
• Start-up voltage: 22 V
• Maximum input voltage: 65 V
• Maximum input current: 4 x 14 A (check manufacturer’s specifications for the device version)
• Maximum input short-circuit current: 4 x 20 A (check manufacturer’s specifications for the device version)
• Number of MPP trackers: 4
• Rated output power: 1600 VA
• Rated output current: 6.96 A at 230 V
• Rated output voltage/range: 230 V / 180–275 V
• CEC peak efficiency: 96.70%
• Ambient temperature range: -40 °C to +65 °C
• Dimensions (WxHxD): 331 x 218 x 36.6 mm (check unit version)
• Weight: 4.7 kg (check unit version)
• Enclosure rating: IP67

Hoymiles DTU-Lite-S – available as an option

The Hoymiles DTU-Lite-S gateway is an optional data transmission unit that collects information and operating data from compatible microinverters via a Sub-1G wireless connection and transmits it via Wi-Fi to the Hoymiles S-Miles Cloud monitoring system. The DTU-Lite-S is included only if selected during the ordering process.

• Easy Setup of the Data Transmission Unit
• Module-level monitoring for up to 99 solar modules
• Display of operational data and alarm messages via compatible Hoymiles applications
• Support for system monitoring via the S-Miles Cloud
• Power supply via USB port

How It Works

The DTU-Lite-S supports monitoring of up to 99 solar modules. Operating data and alarm messages can be analyzed using the designated Hoymiles applications. The available remote monitoring and management functions depend on the system configuration and the respective access rights.

Creating an S-Miles Account

End users can create an S-Miles account directly. Instructions from Hoymiles are available in the download section of the corresponding product page.

Technical Specifications

• Wireless technology: Sub-1G
• Maximum range: up to 400 m in open terrain, depending on the installation environment
• Monitoring capacity: up to 99 solar modules
• Wi-Fi: 802.11 b/g/n
• Polling interval: every 15 minutes
• LED indicator
• Local app: S-Miles Toolkit
• Power consumption: typically 1.0 W / maximum 5.0 W
• Input voltage: 5 V
• Ambient temperature range: -20 °C to +55 °C
• Dimensions (WxHxD): 143 x 33 x 12.5 mm
• Weight: 0.1 kg
• Certifications according to the manufacturer: CE, FCC, IC, RCM, Anatel
• Compatible microinverters: HMS and HMT series

HMS Field Connector Plug&Play Connection Cable

The Hoymiles HMS connection cable is designed for the AC-side connection of a compatible HMS microinverter. It consists of an HMS Field Connector, an AC cable, and an AC plug. Various cable lengths are available for this complete system. The term “Plug&Play” refers to the cable itself and does not mean that the entire solar system can be put into operation independently via a household outlet.

For an inverter with a rated output power of 1,600 VA, the intended connection type, the wiring sizing, and the suitability of all connection components must be verified by a qualified electrician. Connection to the home electrical system and commissioning must be performed exclusively by a qualified professional in accordance with applicable regulations.

Hoymiles HMS Cable System

The HMS cable system enables AC-side connection of compatible Hoymiles HMS inverters. The available cables and connection components support various installation configurations. Selection and professional installation must be carried out in accordance with the technical requirements of the respective system.

Technical Specifications

• Components: HMS Field Connector, AC cable, and AC plug
• Cable type: PV07AC-F
• Cable length: 5 m, 10 m, or 15 m, depending on the selected variant
• Conductor cross-section: 1.5 mm²
• Rated voltage: 250 V
• Rated current: 12 A
• Temperature range: -40 °C to +85 °C

Installation and Grid Connection in Germany

The Solar-Direct PV system has a nominal PV power output of 1,800 Wp and a nominal inverter output of 1,600 VA. This exceeds the 800 VA inverter power limit applicable to simplified plug-in solar devices, and the system must therefore be installed as a grid-connected photovoltaic system in accordance with applicable technical regulations and connection requirements.

Connection to the home electrical system and commissioning must be performed by a qualified electrician. The electrician will inspect the existing electrical installation and ensure a suitable, standards-compliant connection solution. This system is not designed for self-commissioning via a standard household outlet.

The system must be reported or registered in accordance with applicable legal requirements and the requirements of the responsible grid operator. This includes, in particular, registration in the Federal Network Agency’s market master data registry.