Pytes V15 + Solis/Pytes JS3PL15K package - storage and three-phase hybrid inverter

The package contains the two pieces that turn a photovoltaic system into a truly independent one: the hybrid inverter, which manages the panels, the battery, the house and the grid at the same time, and the battery itself, which keeps the energy produced during the day for the evening and night. They are supplied as an already compatible set, that is the battery and the inverter recognise each other and communicate without complicated settings. When the grid goes down, the house switches to the battery so fast that the appliances do not even notice.

The battery stores 14.34 kWh, an amount that usually covers the evening and night consumption of a house, and the inverter can deliver 15 kW, enough for the simultaneous starting of several large loads. The switchover to backup takes place in under 10 milliseconds, and when a motor starts the system temporarily withstands twice the rated power, for 10 seconds. The battery accepts over 6,000 full cycles at 90% depth of discharge and over 10 calendar years, with an efficiency of at least 95% on the charge-discharge cycle, that is small storage losses. The inverter accepts up to 24 kW of panels, so the system can be oversized on the solar side. The battery weighs 135 kg and measures 700 x 282 x 730 mm, and the IP21 enclosure requires indoor installation, in a dry space; up to 6 modules can be connected in parallel, for over 86 kWh, and the inverters can be paralleled up to 90 kW.

JS3PL15K inverter: 15 kW / 15 kVA, three-phase output 380/400 V at 50/60 Hz, maximum current 22.8 A (50 Hz) and 21.7 A (60 Hz); usable PV up to 24 kW, maximum DC voltage 1,000 V, 2 MPPTs with a 200-850 V range, a maximum of 4 strings; battery port 40-60 V, lithium-ion or lead-acid, maximum charge/discharge current 290 A; backup 15 kW with 2x overload for 10 s and switchover under 10 ms; maximum efficiency 97.6%, IP66, -40...+60 degrees C, 430 x 660 x 305 mm, 42 kg. Pytes V15 battery: LFP module 51.2 V nominal / 280 Ah / 14.34 kWh, range 47.5-57.6 V, standard current 140 A at 25 degrees C, maximum 200 A (180 s), peak 300 A (15 s), round-trip efficiency at least 95%, RS485, CAN, dry contact or WiFi communication, IP21, a maximum of 6 units in parallel (series connection is forbidden). The battery's window of 47.5-57.6 V falls within the 40-60 V range of the battery port, so electrical and CAN/RS485 protocol compatibility is assured.

Who it suits

Suitable for a large house or a three-phase villa, a guesthouse or a company's premises with an unstable grid, that wants backup for the whole house and the possibility of expanding the storage in steps.

Terms explained

• Hybrid inverter: An inverter that works simultaneously with the panels, the battery and the grid, unlike the on-grid one, which shuts down during a power cut.
• LFP / LiFePO4: The lithium iron phosphate battery type, chosen for high thermal safety and long service life.
• Round-trip efficiency: How much of the energy put into the battery you can take back out; at least 95% means small storage losses.

Technical specifications

Recommended applications

• Large houses and three-phase villas with self-consumption and full backup
• Farms and guesthouses with an unstable grid, with switchover under 10 ms
• Company premises and workshops that want to reduce consumption peaks
• Systems expandable in steps, by adding V15 modules

Warranty

5 years product (JS Series inverter)

Technical details

Specifications confirmed from the manufacturer's datasheet

The package combines the Pytes JS3PL15K three-phase hybrid inverter with the Pytes V15 LiFePO4 battery, forming a low-voltage storage system of 15 kW / 14.34 kWh, ready configured and with BMS-inverter compatibility.

The JS3PL15K inverter has a rated AC power of 15 kW (15 kVA), a three-phase output of 380/400 V at 50/60 Hz with 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, a maximum DC voltage of 1000 V, two MPPT trackers with a 200-850 V range and a maximum of 4 strings. The battery port works on 40-60 V, with lithium-ion or lead-acid, and withstands a maximum charge/discharge current of 290 A. The backup output delivers 15 kW with an overload of 2 x rated power for 10 s and switchover under 10 ms when the grid goes down. The maximum efficiency is 97.6%, the protection IP66, the thermal range -40...+60 degrees C, the dimensions 430 x 660 x 305 mm and the weight 42 kg; the system is scalable by paralleling up to 90 kW.

The Pytes V15 battery is an LFP module of 51.2 V nominal, 280 Ah, respectively 14.34 kWh of rated energy, with a voltage range of 47.5-57.6 V. The standard charge/discharge current is 140 A at 25 degrees C, the maximum current 200 A (180 s) and the peak 300 A (15 s). The round-trip efficiency is at least 95%, the service life over 6000 cycles at 90% DoD and over 10 calendar years. Communication is over RS485, CAN, dry contact or WiFi, the enclosure protection is IP21, the dimensions 700 x 282 x 730 mm and the weight 135 kg. Up to 6 units can be connected in parallel (series connection is forbidden), in order to scale the capacity to over 86 kWh.

The battery's voltage range (47.5-57.6 V) falls exactly within the 40-60 V window of the inverter's battery port, so the two components are compatible electrically and through the CAN/RS485 communication protocol.