HS3-3k~4k Трехфазная универсальная система хранения энергии
Technical Specifications
| AC Power | 3kW - 4kW |
|---|---|
| Inverter Type | All-in-one hybrid energy storage system |
| MPP Voltage Range | 180 – 900 Volt |
| MPP Tracker | 2 |
| Phases | 2 |
| Коммуникация | CAN, RS485, Wi-Fi, Ethernet, 4G, DRM, Bluetooth |
| Pieces per Package | 1 per carton, 14 per pallet |
| Гарантия | 5 years (extendable up to 15 years) |
Product Description
SAJ HS3 3 – 4 kW Three-Phase All-in-One ESS (T2)
SAJ’s latest all-in-one solution for high-end homes, integrating a hybrid inverter, BMS, EMS, battery, and an optional 11 kW EV charger into a single, ultra-slim (170 mm) IP65 unit.
With 20 A string current, plug-and-play modules, and <20 ms UPS backup, installation is fast and performance is guaranteed.
Design
| Inverter Size (H×W×D) | 450 × 695 × 170 mm |
| Battery Size (per 5 kWh) | 420 × 695 × 170 mm |
| Weight (Inverter / Battery) | 34 kg / 53 kg |
| Cooling | Natural convection < 35 dB |
| Enclosure | Aluminium, IP 65 |
PV & AC Specs
| Rated AC Power | 3 kW / 4 kW |
| Max PV Power | 6 kW / 8 kW DC |
| MPPTs / Strings | 2 × 1 (180–900 V) |
| Max String Current | 20 A (25 A ISC) |
| Grid Output | 3L+N+PE, 220/380 – 240/415 V |
| UPS Backup | 3 kW / 4 kW, < 20 ms transfer |
| Максимальная эффективность | 98.0 % |
Battery Specs
| Chemistry | LiFePO4 (HV 380–500 V) |
| Capacity | 5 – 40 kWh (1 to 8 modules) |
| Max Charge / Discharge | 30 A / 12.4 A |
| Special Features | Module-level DC/DC optimizer, self-heating, fire protection |
Smart Functions
- Self-Use, Time-of-Use, Backup & Passive modes
- Zero-export & dynamic limit via smart meter
- Optional integrated 11 kW Type 2 EV Charger
- 100% three-phase imbalance support
- AFCI & Rapid Shutdown (RSD) ready
- Bluetooth LCD + Elekeeper app; Wi-Fi / Ethernet / 4G cloud & OTA updates
Safety & Compliance
- DC switch, Type II SPDs, RCMU, GFCI, DCI & insulation monitoring
- Active anti-islanding, AC short-circuit & overload protection
- Battery reverse-polarity & over-voltage safeguards
- Meets IEC 62109, EN 50549, AS 4777.2, VDE-AR-N 4105, CEI 0-21
Install & Service
- Modular, cable-free plug-in design for ground or wall mount
- Commission in minutes via Elekeeper app
- Global SAJ service network
Гарантия
| Standard Cover | 5 years |
| Extension Options | 10 / 15 years |
Product Resources
Download the latest user manual & datasheet:
Product Video Showcase
Watch our product demonstrations and tutorials
Новейшая система накопления энергии для «умного дома» от SAJ — серия HS3
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SAJ HS3 communication cable connecting method Sweden
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SAJ HS3 All-in-One Smart Energy Storage Installation Tutorials (EN)
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SAJ HS3 if didn't connect to master grid signs
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Application Scenarios
Discover how this product can be used in different real-world scenarios
The Modern Eco-Home
Who it’s for: New-build or renovated homes with three-phase power, aiming for maximum energy self-sufficiency, future-proofed for an EV, and a clean, minimalist aesthetic.
Daily energy flow (example):
| Time of Day | Primary Energy Source | Key Activity |
|---|---|---|
| Morning (09:00-12:00) | Solar PV | Power home loads, start charging battery |
| Afternoon (12:00-16:00) | Solar PV (Surplus) | Charge EV with 100% green energy |
| Evening (18:00-22:00) | Battery Storage | Run kitchen, lighting, entertainment |
| Grid Outage | Battery (UPS Mode) | Seamless power to essential circuits |
How it runs (Self-Use + EV Smart Charging):
Priority 1: Power the home with solar. Priority 2: Use surplus solar to charge the EV. Priority 3: Use any remaining solar to charge the battery. Priority 4: Export to grid (if allowed/desired). Evening: Discharge battery to power the home.
Sizing guide (for reference):
- A 10 kWh battery system (2 modules) covers typical evening use and provides a solid backup reserve.
- With an 8 kWp PV array, the system can easily cover daily home use (~15 kWh) and provide a significant charge to an EV (~20-25 kWh) on a sunny day.
“The design is fantastic. One slim unit in the garage handles everything. We run the house and charge the car almost entirely from the sun.”
Small Business & Office Resilience
Who it’s for: Small businesses, workshops, or home offices with three-phase power that need to reduce daytime energy costs and ensure uninterrupted operation of critical equipment like servers, POS systems, and security.
Critical business loads (example):
| Load | Power (W) | Put on BACK-UP? |
|---|---|---|
| Office Server & Network | 200–350 | Да |
| Workstations (2-3 staff) | 300–500 | Да |
| Security System (CCTV) | 50–100 | Да |
| Workshop Machinery | 1000–3000+ | No (keep on grid) |
How it runs (Backup & Self-Use Mode):
Daytime: PV → Power all loads (office + workshop); surplus → Battery Grid Outage: Battery → Instantly powers backup circuit (office/security) Evening: Battery → Powers any overnight loads (servers, security) Set Reserve: Keep Battery SOC at 40% minimum for business-hour backup
Runtime guide (for reference):
- A 5 kWh battery pack can run a 600 W critical office load for over 7 hours, easily bridging most power cuts.
- A 15 kWh system (3 modules) provides extended multi-day resilience for essential equipment.
“We had a blackout last week and didn’t even notice until the streetlights were out. The server, computers, and phones kept running without a single glitch.”
How We Work With You
From your first call to final delivery, we make the process simple and clear
Talk & Plan
We listen to your needs and create a plan that works for you. Our team will help you understand all your options.
Quote & Agree
You get a clear price with no hidden costs. Once you're happy with everything, we sign the agreement and start working.
Make & Check
We carefully make your order and check everything meets our high standards. You'll know exactly how things are going.
Ship & Support
Your order ships safely to you on time. We're always here to help if you need anything after delivery.
Frequently Asked Questions
Find answers to common questions about our products and services
How much power can the HS3-3/4K deliver on-grid and in backup?
Quick view
| Модель | Rated AC (on-grid) | Backup apparent power (continuous) | Peak backup (60 s) |
| HS3-3K-T2 | 3,000 W | 3,300 VA | 6,000 VA |
| HS3-4K-T2 | 4,000 W | 4,400 VA | 8,000 VA |
- Connection: 3-phase, 3L+N+PE; typical grid 230/400 V, 50/60 Hz.
- Backup port supplies critical loads separately from on-grid loads.
- THD on backup output <3% (linear load), suitable for common household and small commercial equipment.
How do I size the battery stack for HS3-3/4K projects?
Modular approach: Each BU3 pack is 5.0 kWh rated (~4.5 kWh usable). One inverter supports up to 8 packs (max ~36 kWh usable).
| Packs | Usable energy (approx.) | Example use case (typical) |
| 1 | ~4.5 kWh | Short outages; lights, router, small fridge for ~4–6 h |
| 2–3 | ~9–13.5 kWh | Whole-home essentials overnight or a small office till morning |
| 4–8 | ~18–36 kWh | Longer autonomy; multi-day load shifting (depends on usage) |
- Max 3 batteries per vertical stack.
- For 4–8 batteries, use multiple stacks plus the BC3 battery combiner box.
- Keep ~0.5 m between stacks for cabling.
Commissioning will detect insulation or communication faults and report codes in the app; resolve before handover.
What space and environment do I need for installation?
- Install vertically; avoid forward tilt.
- Allow ~30 cm clearance on sides/top for airflow.
- Permissible tilt: ≤3° back, ≤2° sideways.
- HS3 inverter: ~450 × 695 × 170 mm; ~34 kg.
- BU3 battery (per module): ~695 × 420/370 × 170 mm.
- Indoor/outdoor, IP65 enclosure.
- Operating up to 50 °C (derating above ~45 °C).
- Natural convection; typical noise <35 dBA.
- Altitude up to 3000 m; non-condensing 5–95% RH.
How do monitoring and communications work for HS3-3/4K?
- Bluetooth (BLE) for nearby setup via the Elekeeper app.
- W models: Wi-Fi + Ethernet (LAN). G models: 4G SIM slot.
- Ports: RS485 (meter/EMS), CAN (battery/EMS), dry contacts (DO/DI).
- Real-time PV, battery, grid and backup load power.
- Historical energy charts, alarms, and firmware status.
- Chint DTSU666 (3-phase), 100 A per line, RS485.
- CT options available (80/100/250 A scenarios).
- Power up; check LEDs.
- Connect via Elekeeper (BLE), then bind Wi-Fi/Ethernet/4G.
- Verify meter RS485 and CT direction.
Which grid-safety and protection functions are built in?
- Anti-islanding (AFD) and arc-fault (AFCI) protection integrated.
- DC & AC surge protection integrated; RCMU embedded.
- External RCD (if required by local code): Type A or B, ≥300 mA.
- Recommended AC breaker between grid and inverter: ≥63 A.
- System connection: separate GRID and BACKUP ports; 3L+N+PE.
Wiring reminders
- Use the supplied 3-phase meter via RS485 for accurate control.
- Do not use functionally-earthed PV arrays with this inverter.
- Follow regional rules on neutral/earth bonding for backup output.
What support does Sunriver Electric provide for HS3-3/4K projects (quote → shipment)?
- FOB quotations with model/options list (W vs G, Basic vs Pro).
- Clear datasheets + user/quick guides for installer handoff.
- Compliance pack on request (CE/EMC/RCM marks as applicable).
- String sizing check (MPPT range 180–900 V) and breaker notes.
- Battery stack plan (1–8 modules; BC3 combiner when >3 per stack).
- CT orientation and meter wiring diagram highlights.
- Packing list & serials for each inverter/battery for your records.
- Remote onboarding steps for Elekeeper (BLE → Wi-Fi/Ethernet/4G).
- Basic troubleshooting flow (LED codes & common RS485 issues).
Still have questions?
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