Name: Apium 15 kW three-phase hybrid inverter
Brand: Apium
SKU: SUN-15K-SG05LP3-EU-SM2

Overview

One inverter for solar, battery and grid.

The Apium SUN-15K-SG05LP3-EU-SM2 is a 15 kW three-phase hybrid inverter. It takes up to 24,000 W of solar on 2 MPP trackers, charges and discharges a 48 V lead-acid or lithium battery at up to 280 A, and manages the grid connection.

Each phase can deliver up to 50% of rated power (100% unbalanced output), so single-phase loads on a three-phase supply are handled well. It can couple to an existing solar system, run in parallel with other units for larger systems, and store energy from a diesel generator. The IP65 enclosure suits indoor or outdoor installation.

All figures from the Apium SG05LP3 14–20 kW datasheet.

Apium inverter and battery installed in a garage — An Apium inverter and battery system, installed

Key features

Built for flexible systems.

100% unbalanced output

Up to 50% of rated power on each phase.

AC coupling

Retrofit to an existing solar system without replacing it.

Up to 10 in parallel

On-grid and off-grid parallel operation, with multiple batteries in parallel.

280 A battery current

Maximum charge and discharge current for this model.

6 charge time periods

Schedule battery charging and discharging across six time periods.

Generator input

Stores energy from a diesel generator.

Technical specifications

SUN-15K-SG05LP3-EU-SM2

Figures from the manufacturer's datasheet for this model. Check the datasheet when designing a system.

Battery input

Battery type: Lead-acid or Lithium-ion
Battery voltage range: 40–60 V
Max. charging current: 280 A
Max. discharging current: 280 A
Charging strategy (Li-ion): Self-adaption to BMS
Number of battery inputs: 2

PV string input

Max. PV access power: 30,000 W
Max. PV input power: 24,000 W
Max. PV input voltage: 800 V
Start-up voltage: 160 V
MPPT voltage range: 160–650 V
Rated PV input voltage: 550 V
Max. operating PV input current: 36 + 36 A
Max. input short-circuit current: 54 + 54 A
MPP trackers / strings per tracker: 2 / 2 each

AC input / output

Rated active power: 15,000 W
Max. apparent power: 16,500 VA
Rated current (input / output): 22.8 / 21.8 A
Max. current (input / output): 25 / 24 A
Max. continuous AC passthrough (grid to load): 70 A
Peak power (off-grid): 2 × rated power, 10 s
Power factor range: 0.8 leading to 0.8 lagging
Rated voltage / range: 220/380 V, 230/400 V, 0.85–1.1 Un
Grid frequency / range: 50 Hz (45–55), 60 Hz (55–65)
Grid connection: 3L + N + PE
Current harmonic distortion (THDi): < 3% of nominal power
DC injection current: < 0.5% In

Efficiency

Max. efficiency: 97.6%
Euro efficiency: 97.0%
MPPT efficiency: > 99%

Protection

Integrated protection: DC reverse polarity protection, AC output overcurrent protection, thermal protection, AC output overvoltage protection, AC output short circuit protection, DC component monitoring, arc fault circuit interrupter (optional), anti-islanding protection, DC switch, insulation impedance detection, residual current detection
Surge protection: Type II (DC), Type II (AC)

Interface

Communication: RS485, RS232, CAN
Monitoring: GPRS, Wi-Fi, Bluetooth, 4G, LAN (optional)

General

Operating temperature: −40 to +60 °C, derating above 45 °C
Ambient humidity: 0–100%
Altitude: 3,000 m
Noise: < 60 dB
Ingress protection: IP65
Topology: Non-isolated (solar), isolated (battery)
Overvoltage category: OVC II (DC), OVC III (AC)
Dimensions (W × H × D): 456 × 750 × 268.5 mm (excluding connectors and brackets)
Weight: 51.9 kg
Cooling: Intelligent air cooling

Standards

Grid regulation: IEC 61727, IEC 62116, CEI 0-21, EN 50549, NRS 097, RD 140, UNE 217002, OVE-Richtlinie R25, G99, VDE-AR-N 4105
Safety / EMC: IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2

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