Growatt MOD 13KTL3-HU – 3-phase hybrid with integrated backup (13 kW)

Are you looking for a quiet, robust inverter that works effortlessly with an HV battery and continues to feed your most important groups in the event of a power failure? Then the Growatt MOD 13KTL3-HU is the right choice. This HU variant has the backup power supply (EPS) already built in. Fewer loose parts, less cabling, faster completion – exactly what makes installers and residents happy.

What makes the 13KTL3-HU strong in practice?

• Integrated backup (EPS) – automatically switches over in case of mains failure; ideal for router, lighting, fridge/freezer etc.

• 3-phase 13 kW – suitable for modern households and small business applications.

• Battery-ready (HV) – seamless coupling with Growatt APX batteries for smart charging/discharging.

• IP66 & fanless – outdoor placement possible, quiet operation, low maintenance.

• Smart control & limitation – export-limiting and energy logic combined with a 3-phase Smart Meter.

• Flexible string design – multiple MPP trackers for separate roof areas (e.g. east/west or shade zone separately).

Design guide (3 minutes clear)

• Separate strings per MPP tracker
  Put different orientations or shade profiles on their own tracker. That way you make the most of the MPP control.

• Target your operating voltage smartly
  Aim your strings at the middle of the MPP range. Then the system performs stably in winter (higher voltage) and summer heat.

• Sizing the battery
  Choose your APX HV stack based on evening/night consumption and desired backup duration. Choosing slightly wider avoids regrets and unnecessary recharging.

• Smart Meter = must-have
  Place the 3-phase energy meter at the grid input and connect to the inverter via RS485. Without a meter, export-limiting and battery control do not work as intended.

• Phase balance & back-up groups
  Distribute heavy consumers over the phases. In back-up, deliberately choose your critical groups; include heavy peak users only if (battery) power allows.

Connection & commissioning (brief step-by-step plan)

1. Mounting & cooling – install vertically, keep clear for natural convection, out of direct spray water and full sun.

2. AC side – 3-phase 230/400 V; correct circuit breaker/selectivity, earthing and clear labelling.

3. DC side – strings per tracker; check polarity, insulation value and connector pressings (MC4/H4).

4. Energy counter – insert 3-phase Smart Meter and connect RS485 to the inverter.

5. Configuration – select in the menu: Load first, Battery first or Grid first. Test backup switching and check phase balance.

When to choose the HU series?

• You want emergency power without an external backup box.

• You want to work with an HV battery now or later and flexibly control consumption, dynamic tariffs and feed-in.

• You appreciate a quiet, IP66-rated inverter that is quick and logical to install.

Plus points at a glance

• 13 kW, 3-phase hybrid inverter with EPS (Emergency Power Supply) on board

• Multiple MPP trackers for flexible string design

• APX HV battery-ready, smart charge/discharge control

• Export-limiting and energy management with 3-phase Smart Meter

• Fanless, IP66, installer-friendly

• 10-year warranty

Datasheet Manual Quick guide