The Q.HOME CORE H5 is a single-phase, grid-connected system designed for residential use, integrating solar energy sources and Li-ion Battery energy storage. It comprises an inverter (Q.VOLT), battery charger/discharger, Li-ion battery (Q.SAVE), and an Energy Management System (EMS). The system's operating modes, including stand-alone (back-up), PV generation, and PV generation with charge/discharge, are automatically managed by the EMS algorithm.
Function Description:
The Q.HOME CORE H5 is designed to:
- Charge the integrated Li-ion Battery energy storage.
- Supply power to household loads.
- Convert direct current (DC) electricity from the battery to alternating current (AC) for discharge to household single-phase loads or the electric system.
The system supports various energy policy modes:
- Standby: Halts all operations.
- Self-consumption: Controls power autonomously. PV-generated electricity is first used for household loads, then to charge the battery, and any remaining surplus is sold to the power company.
- Zero Export Mode: Prevents PV-generated electricity from being sold to the power company. Power is prioritized for household loads, then battery charging, and any excess reduces PV generation.
- Time-based Mode: Controls electricity based on a preset schedule, managing battery charging and discharging hourly. Actions include:
- None: Q.HOME CORE is on standby.
- Auto: Operates like Self-consumption mode.
- Inverter: Allows control of charging (negative power value, e.g., -5000W to -1W) or discharging (positive power value, e.g., 1W to 5000W) from the grid.
- External Generation Mode: In off-grid mode, this prevents electricity from flowing to the in-house generator.
Important Technical Specifications:
- Dimensions (W × H × D): Inverter Module/Battery Module: 460 x 700 x 221 mm (from wall) for the inverter, and 460 x 700 x 238 mm (from wall) for the battery.
- Weight: Inverter Module (Q.VOLT): 37.5 kg; Battery Module (Q.SAVE): 61.1 kg.
- Operating Temperature Range: Q.VOLT: -20 to 60 °C; Q.SAVE: -10 to 45 °C.
- Relative Humidity: 4 to 100% (Condensing).
- Protection Degree/Class: IP65.
- Max. Operation Altitude: 2,000 m.
- Cooling Method: Natural air cooling.
- Product Warranty/Performance Warranty: 15/15 years.
- Noise Emissions: ≤ 40 dB(A) @ 1m.
- Over Voltage Category: OVC II (DC)/OVC III (AC).
- Communications: LAN, RS485, CAN, Wi-Fi (optional), LTE (optional).
- Remote Monitoring: Web, Mobile & App.
- Software Update: Online update.
- Energy Management System: Integrated.
- Country of Manufacturer: Republic of Korea.
PV Data (DC):
- Max. Input Usable Power: 8.0 kWp (4.0 per MPPT).
- Max. Input Voltage: 600 VDC.
- Start Input Voltage: 120 to 550 V.
- MPP Voltage Range (Operation Range): 90 to 550 V (Derating from 520 to 550 V).
- Number of Independent MPPTs: 2.
- Number of DC Input Pairs per MPPT: 1.
- Max. Input Current per MPPT/Max. Short Circuit Current per MPPT: 15/20 A.
- DC Connection Type: MC4.
- Note: If PV open circuit voltage is between 550V and 600V, a PV over voltage error will occur.
Grid Data (AC):
- Max. Apparent Power/Rated Output Power: 5.0/5.0 kVA/kW.
- Nominal Voltage/Range: 230/180 to 260 V.
- Nominal Grid Frequency/Range: 50, 60/-5 Hz to +5 Hz.
- Feed-in Phase/Connection Phase: Single/Single.
- Nominal Current/Max. Current/Max. Over-Current Protection: 21.7/25/30 A.
- Power Factor Range: 0.8 lagging to 0.8 leading.
- Total Harmonic Distortion: ≤5%.
Backup Power Output (Alternating Current):
- Connection Phase: Single.
- Rated Apparent Power/Rated Power (only Battery): 3.3 to 4.5/3.3 to 4.5 kW (1 Battery Pack), 5/5 kW (2, 3 Battery Packs).
- Rated Apparent Power/Rated Power (With PV): 5.0/5.0 kW (max).
- Rated Voltage: 230 V.
- Rated Frequency: 50, 60 Hz.
- Switch over Time to Backup Power: Less than 0.1 seconds.
- Overload support: 30 sec for 5.0 - 5.5kVA, 20 sec for 5.5 - 6.0 kVA, 10 sec for 6.0 - 6.5 kVA (@2, 3 Battery Packs and Off-grid).
- Note: Backup power output is not suitable for inductive or capacitive loads causing high inrush current.
Efficiency:
- MPPT Efficiency: 99.9%.
- Max. Efficiency (PV to Grid): 97%.
- Max. Efficiency (PV to Battery): 97.8%.
- Max. Efficiency (Battery to Grid): 96.3%.
Battery Unit (DC):
- Battery Technology: Lithium-ion NCA (Samsung SDI).
- Battery Energy: 6.8/13.7/20.5 kWh (6.86 kWh/pack).
- Battery Usable Energy: 6.51/13.03/19.55 kWh.
- Max. Charge Power/Max. Discharge Power: 3.8/4.5 kW (1 Battery Pack), 5.0/5.0 kW (2, 3 Battery Packs).
- Converter Technology: Non-isolated.
- Rated Battery Voltage/Battery Voltage Range: 202.8/168.0 to 228.2 VDC.
- Maximum Charge/Discharge Current: 16.9/20 A (for each Q.SAVE unit).
- Depth of Discharge (DoD): 95%.
Usage Features:
- Mounting: Supports both wall-mounted and floor-mounted (optional stand) installations. Special care is required due to the weight of the Q.VOLT (37.5 kg) and Q.SAVE (61.1 kg), requiring at least two people for handling.
- Safety Precautions: Emphasizes the need for qualified personnel for all work, wearing protective gear (rubber gloves, protective clothing, glasses, boots), and strict adherence to safety instructions to prevent electric shock, burns, fire, or injury from high voltages and currents. It warns against connecting/disconnecting PVs, batteries, and grid connectors with power on, and opening the enclosure while the inverter is operating.
- Earth Fault Alarm: In Australia, the inverter stops operation and sounds a buzzer for 2 minutes if an earth fault occurs.
- Dark Start Function: Allows turning on the Q.HOME CORE when there is no PV or Grid power by pressing the Dark Start button for about 10 seconds.
- Commissioning: Local commissioning is performed using the Q.OMMAND GO App, connecting via Wi-Fi dongle or USB tethering. Initial setup includes registering the product, checking firmware updates, and setting system parameters like region, time, grid code, feed-in limits, and energy policy mode.
- Energy Meter Integration: Supports various energy meters (Carlo Gavazzi EM24, EM112, EM530, EM540; CHINT DTSU666, DDSU666) for monitoring grid and load connections.
- Grid Protection Settings (Australia): Includes "10Min Avg Protection" which blocks the inverter if the average system voltage exceeds a detection level for 10 minutes, and "Freq-Watt P(Freq)" which adjusts active power based on grid frequency changes.
- Volt-Watt P(V) (Australia): Adjusts maximum input-output active power based on system voltage during charging and discharging operations.
- Fixed Power Factor (Australia): Allows setting a fixed power factor (0.8 to 1.0) for reactive power supply and absorption.
- Fixed Q (Reactive power mode) (Australia): Outputs reactive power at a fixed rate for apparent power, with a minimum setting range of 60% absorption to 60% supply.
- Volt-Var Q (Volt-var response mode) (Australia): Changes reactive power based on system voltage, following a predefined response curve.
- Gradient of P Limit (Australia): Defines the ramp speed of active power output as a percentage of the rated power per minute.
- Limit Control (Australia): Includes Export Hard/Soft Limit and Generation Hard/Soft Limit functions to manage inverter output power and prevent grid issues.
- Fixed Power (Germany): Limits inverter output power below a fixed power with an active power setpoint gradient.
- Freq-Watt P (Freq) (Germany): Changes inverter output active power based on system frequency to support the grid.
- Fixed cos Φ (Germany): Allows setting the inverter output power factor (leading or lagging) for reactive power.
- Cos Φ (P) curve (Germany): Outputs lagging reactive power when inverter output power exceeds 50%, operating at a power factor of 0.95 at maximum output.
Maintenance Features:
- Safety during Maintenance: Emphasizes disconnecting charging sources and battery power lines from the ground before connecting or disconnecting battery terminals.
- Qualified Personnel: All maintenance and service work must be performed by qualified personnel from an authorized service center.
- Battery Handling: Strict warnings against disposing of batteries in fire, opening/damaging them, and handling them without insulated tools and protective gear due to risk of explosion, corrosive substances, electrical shock, and short-circuit current.
- Troubleshooting: Provides an error code list accessible via the Q.OMMAND Go app for diagnosing system failures and seeking support from the service center. Warnings against arbitrary repair or component replacement.
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