Advanced Three-Phase Solar, Battery and Backup Power

The Solinteg MHT-15K-40 is part of Solinteg's Integ M high-voltage three-phase hybrid inverter platform.

Designed for larger solar and battery installations, the MHT-15K-40 combines:

• solar generation management;
• high-voltage battery storage;
• grid-connected operation;
• backup power;
• intelligent Time-of-Use energy strategies;
• dynamic pricing support;
• configurable peak shaving;
• smart monitoring and remote management.

The inverter is suitable for applications requiring a higher-power three-phase solution with substantial PV capacity and battery charging performance.

Key Features

☀️ Supports Up to 24kWp Solar PV

The Solinteg MHT-15K-40 supports a maximum PV array capacity of 24kWp.

For a 15kW inverter, this provides significant flexibility when designing larger solar systems, particularly for properties with:

• high daytime energy consumption;
• battery charging requirements;
• commercial electrical loads;
• EV charging;
• pool equipment;
• heat pumps;
• other high-energy appliances.

The inverter provides two MPPT trackers, with two strings per MPPT and up to 30A input current per MPPT.

15kW Battery Charging and Discharging

The MHT-15K-40 supports:

Maximum battery charge power: 15kW
Maximum battery discharge power: 15kW
Maximum charging current: 40A
Maximum discharging current: 40A

This makes the inverter particularly suitable for larger compatible high-voltage battery systems where strong battery charging and discharge performance is required.

⚡ Wide 135–750V Battery Range

The inverter supports compatible lithium-ion battery systems operating within a 135–750V high-voltage battery range.

This provides system designers with greater flexibility when matching the inverter with compatible high-voltage battery configurations.

Battery compatibility must always be confirmed against the applicable Solinteg compatibility requirements and battery manufacturer's technical documentation.

Powerful Backup Performance

For backup applications, the MHT-15K-40 provides:

• 15kW rated backup output
• 24kVA peak apparent power for 10 seconds
• <10ms on-grid/off-grid switching time

The high peak backup output capability can help support suitable loads with short-term startup demand, subject to correct system design and backup load assessment.

⚖️ Unbalanced Three-Phase Output Capability

The MHT series is designed to support unbalanced three-phase output, which can help manage properties where electricity usage is not evenly distributed across all three phases.

This is particularly relevant for many residential and commercial properties where different appliances and circuits operate on different phases.

High Conversion Efficiency

The MHT series specifies:

MPPT efficiency: 99.9%
Maximum inverter efficiency: 98.4%
European efficiency: 97.5%

These efficiency levels support effective conversion and management of solar energy across the system.

Intelligent Energy Management

The MHT series provides several smart energy management capabilities.

Six Work Modes

The platform supports six operating modes for different energy management applications.

Time-of-Use Energy Management

The system can support energy strategies based on Time-of-Use electricity tariffs.

Depending on system configuration, this can allow the battery to:

• store solar energy;
• charge during selected tariff periods;
• discharge during higher-cost periods;
• prioritise self-consumption;
• retain battery capacity for backup operation.

Actual savings depend on household consumption, solar generation, battery size and electricity tariff structure.

Dynamic Pricing Support

The platform also supports dynamic pricing strategies with user-defined scheduling rules.

Peak Shaving

Configurable peak shaving can help manage grid demand by using battery power when electricity consumption reaches selected thresholds.

This can be particularly useful for suitable commercial and high-energy residential applications.

Technical Specifications

The datasheet notes specific PV voltage conditions depending on whether a battery is connected, so final system design should follow the manufacturer's installation requirements.

Integrated Protection Features

The Solinteg MHT-15K-40 includes integrated protection functions such as:

• DC reverse polarity protection;
• battery input reverse connection protection;
• insulation resistance protection;
• DC Type II surge protection;
• AC Type II surge protection;
• over-temperature protection;
• residual current protection;
• anti-islanding protection;
• AC over-voltage protection;
• overload protection;
• AC short-circuit protection.

Why Choose the Solinteg MHT-15K-40?

Large Solar PV Capacity

Supports up to 24kWp of solar panels, making it suitable for larger solar installations.

Strong Battery Performance

Supports up to 15kW battery charging and 15kW discharging, with a maximum charge and discharge current of 40A.

High Backup Power

Provides 15kW continuous backup output and up to 24kVA peak output for 10 seconds.

Fast Backup Switching

The inverter specifies an on-grid/off-grid transition time of less than 10 milliseconds.

Flexible Three-Phase Energy Management

Suitable for properties with three-phase electricity supply and uneven energy consumption across phases.

Smart Energy Control

Includes support for:

• six energy work modes;
• Time-of-Use strategies;
• dynamic pricing;
• scheduled energy management;
• configurable peak shaving;
• centralised monitoring.

Product Card - Solinteg MHT-15K-40

15kW Three-Phase Hybrid Inverter

☀️ Up to 24kWp Solar PV Capacity
15kW Battery Charge & Discharge Power
⚡ 40A Maximum Charge/Discharge Current
2 MPPTs with 30A Input per MPPT
15kW Rated Backup Output
24kVA Peak Backup Power for 10 Seconds
⏱️ <10ms Backup Switching
35–750V High-Voltage Battery Range
99.9% MPPT Efficiency
⚙️ 98.4% Maximum Efficiency
IP65 Protection
TOU, Dynamic Pricing & Peak-Shaving Support

Contact UR Needs for pricing, battery compatibility and complete solar and battery system options.

Call us at 0449 916 688