Guardian E2.1 Tower
Complete Energy Storage System with SunFusion Batteries and Sol-Ark 18K Inverters
NO SEPARATION REQUIREMENT
Due to construction of cabinets and battery modules using 5052-H32 aerospace aluminum
Melting point: 1,125-1,200°F • UL 9540 Compliant • Fire Safety Certified
Technical Specifications
Physical Specifications
| Dimensions | 82" × 17" × 33" |
| Weight | 1,365 lbs |
| Cabinet Type | Aluminum 5052 |
| Cabinet Finish | Gun Metal Finish |
| Air Control | Static Air Controlled |
| Security | Security Screws |
ECHO 3.0 Battery Specifications
| Cell Type | Lithium Iron Prismatic Cells |
| Hazard (NA) | NO NMC |
| Nominal Voltage | 51.2V DC |
| Hithium | 314Ah 16kWh ECHO 3.0 |
| BMS | 48V Advanced BMS |
Sol-Ark® 18K Enhanced System Features
Maximum Power. Ultimate Reliability. Complete Control.
✓ Enhanced Grid Down Generation
• 18kW continuous backup power
• Seamless transition during outages
• No fuel management required
✓ Maximum Efficiency
• 97.5% peak efficiency
• DC-coupled battery architecture
• Reduced conversion losses
✓ Smart Energy Management
• Time-of-use optimization
• Peak shaving capabilities
• Grid services ready
✓ Military-Grade Reliability
• 2x military standards
• EMP hardened option available
• Lightning strike protection
✓ EV Integration Ready
• Level 2 EV charging support
• Smart load management
• Auto EV shed capability
✓ Expandable Design
• Parallel operation up to 6 units
• 108kW combined output
• Scalable to megawatt systems
Maximum Power
18kW Continuous
36kVA Surge
200A Pass-Through
Solar Capacity
26kW PV Input
3X MPPT
24kW AC Coupling
Battery Power
300A Charging
2X 48V Ports
DC Coupled
Grid Services
VPP Ready
5ms Transfer
Rule 21 Compliant
Smart Features
WiFi Monitoring
Remote Updates
AI Optimization
Inverter Specifications (Sol-Ark 18K)
| Continuous AC (Off-Grid) | 18 kW |
| Continuous AC (On-Grid) | 48 kW @ 200A L-L |
| Surge Power (10 sec) | 36 kVA L-L (240V) |
| Max PV Power | 26 kW |
| CEC Efficiency | 97.0% (Peak 97.5%) |
| MPPT Channels | 3 Independent |
| MPPT Voltage Range | 125-550V |
| Grid Response Time | 5ms |
System Features
| Rapid Shutdown | 5-15 seconds |
| Cable Type | 1/0 AWG Arctic Ultraflex |
| Max Current Rating | 300A @ 40°C (104°F) |
| DC Protection | 300A Battery Breaker |
| Communication | WiFi, CanBus, RS485 |
| Operating Temp | -25°C to 55°C |
| Enclosure Rating | NEMA Type 3R |
| Parallel Stacking | Up to 6 units |
Electrical Specifications
| Battery Voltage Range | 40-58V DC |
| Continuous Charge Current | 300A |
| PV Battery Output Power | 20,000W |
| Grid Charging Efficiency | 97.5% |
| Power Factor | +0.9 to 1.0 |
| Frequency | 60/50 Hz |
| THD | <3% |
Protection Features
| PV DC Disconnect | Integrated (NEC 240.15) |
| Ground Fault Detection | Yes (NEC 690.5) |
| Arc Fault Detection | Yes (690.11/UL1699B) |
| Lightning Protection | PV Input Protected |
| AC Breakers | 60A Input/Output |
| EMP Hardened Option | Optional MIL-STD-461G |
| Surge Protection | Type 1 SPD Integrated |
Performance Specifications
| AC Coupling Power | 24 kW |
| Generator Support | Two-Wire Start |
| Load Management | 8 Programmable Relays |
| Monitoring | WiFi/Ethernet/Cellular |
| Warranty | 10 Years Standard |
| Extended Warranty | 20 Years Available |
Advanced Features
| Virtual Power Plant | Ready |
| Grid Services | Frequency/Voltage Support |
| Black Start | Capable |
| Microgrid | Compatible |
| Remote Updates | Over-the-Air |
| AI Optimization | Self-Learning Algorithm |