Solis/Pytes JS3PL15K Inverter, Hybrid, Three-phase, 15kW

It is a hybrid inverter, that is the device that links the panels, the battery, the house and the grid and decides at every moment where the energy goes. Its particularity is the speed with which it takes over the supply when the grid fails: the transfer is done in less than a hundredth of a second, so fast that computers, refrigerators or the heating boiler do not even notice the interruption. It works with low-voltage battery banks, of the 48 V type, which are easily expanded by adding modules.

The 15 kW of continuous power cover the consumption of a large three-phase house, and if needed the inverter can deliver double this power for 10 seconds, which helps with starting pumps and motors. Up to 24 kW of panels can be mounted on the roof, at a maximum voltage of 1000 V, distributed over at most 4 strings and two independent inputs, so two different orientations can be handled separately. The battery is charged and discharged with up to 290 A, and the system is prepared for Pytes 51,2 V batteries, with direct dialogue between the inverter and the battery electronics. The two backup outputs allow the loads to be split: on one you put what has to run anyway (refrigerator, boiler, internet), on the other what can wait. The IP66 enclosure is well sealed against dust and water, the device measures 430 x 660 x 305 mm and 42 kg, and the system status is visible on a 7 inch display or on the phone, via Bluetooth.

Rated AC power 15 kW / 15 kVA, three-phase output 380/400 V at 50/60 Hz, maximum current 22,8 A at 50 Hz and 21,7 A at 60 Hz. PV input: maximum usable power 24 kW, maximum DC voltage 1000 V, two MPPT trackers with a 200-850 V range and a maximum of 4 input strings. Battery port 40-60 V, lithium-ion or lead-acid batteries, maximum charge/discharge current 290 A, BMS communication via CAN or RS485, optimised for Pytes 51,2 V batteries. Backup output 15 kW, overload 2 x Pn for 10 s, transfer time under 10 ms, two backup ports for load prioritisation. Maximum efficiency 97,60%, IP66, 430 x 660 x 305 mm, 42 kg, operating temperature -40...+60 degrees C, 7 inch LCD display and Bluetooth with mobile app, scalable by paralleling up to 90 kW, 5 years warranty.

Who it suits

Suitable for a large three-phase house, a guesthouse or a small office with an unstable grid, which has or is building a 48 V battery bank and has loads that cannot tolerate even a flicker of power.

Terms explained

• Transfer time: How long it takes until the inverter takes over the supply of the house after the grid fails; under 10 milliseconds means practically without a pause, sensitive equipment does not reset.
• BMS: The electronics inside the battery that monitor its state; communication with the inverter makes charging and discharging stop in time, extending the life of the batteries.
• Backup port: The output to which you connect the loads you want to keep powered during an outage; the rest of the house stays on the normal circuit.

Technical specifications

Recommended applications

• Large three-phase homes with storage on 48 V batteries
• Uninterrupted backup for critical loads (under 10 ms)
• Guesthouses, practices and small businesses with an unstable grid
• Systems expandable by paralleling, up to 90 kW

Warranty

5 years

Technical details

Specifications confirmed from the manufacturer's datasheet

Pytes JS3PL15K is a three-phase hybrid inverter of 15 kW from the JS series, designed for low-voltage storage systems. The rated AC power is 15 kW, respectively 15 kVA apparent power, with three-phase output 380/400 V at 50/60 Hz and a maximum current of 22,8 A (50 Hz), respectively 21,7 A (60 Hz).

The photovoltaic side accepts up to 24 kW of usable PV power, at a maximum DC voltage of 1000 V, through two MPPT trackers with a 200-850 V range and a maximum of 4 input strings. The battery port works in the 40-60 V range and accepts lithium-ion or lead-acid batteries, with a maximum charge/discharge current of 290 A and BMS communication via CAN or RS485 - it is optimised for Pytes 51,2 V batteries.

The backup output delivers 15 kW, with an overload capacity of 2 times the rated power for 10 seconds and switching from grid to backup in less than 10 ms, therefore without interrupting sensitive loads. The inverter has two backup ports, which allows prioritising essential loads over non-essential ones.

The maximum efficiency is 97,60%. The enclosure has IP66 protection and a wide thermal range, -40...+60 degrees C, dimensions of 430 x 660 x 305 mm and a mass of 42 kg. The local interface includes a 7 inch LCD display and Bluetooth connection with a mobile app. The system is scalable by paralleling up to 90 kW.