Eltek 241115.650 Flatpack2 48/1500 HE SOLAR

Item	Specification
Nominal operating PV voltage	170–230 VDC
Minimum start-up PV voltage	150 VDC
Max input current	10 A
Derating at low PV voltage	Output limited to 800 W below 85 VDC input
Input protection	Internal fuses, surge suppression, reverse polarity protection, low voltage shutdown
Default float charging voltage	53.5 VDC
Adjustable output voltage range	48.0 VDC ~ 57.6 VDC (customizable for float / equalize charging)
Rated output power	1500 W (full power at PV input ≥170 VDC)
Max output current	31.3 A @ 48 VDC
Static voltage regulation accuracy	±0.5% (10%–100% load)
Dynamic voltage deviation	±5%, response time < 50 ms
Output ripple noise	< 250 mVpp (30 MHz bandwidth)
Parallel current sharing	Passive current sharing for multi-module parallel operation

Core Advantages

1. Independent digital MPPT tracking
   Built-in full-range scanning MPPT algorithm optimizes solar energy harvesting under low light or partial shading conditions. Each module connects to one independent PV string without mutual interference.
2. High isolation safety design
   3kVAC isolation between PV input and 48V output suppresses lightning surges and transient voltage spikes, protecting batteries and telecom loads with PV ground fault detection.
3. Ultra-high energy efficiency
   Peak efficiency exceeds 96.5% under typical operating conditions (200 VDC PV input, 30%–80% load), minimizing solar power loss and lowering operational costs for remote sites.
4. Hot-swappable modular design
   Standard 1U half-width form factor with variable-speed front cooling fan. Hot-swap maintenance is supported; multiple modules can operate in N+1 redundant parallel configuration for non-stop power supply.
5. Wide operating temperature range
   Operates reliably from -40°C to +75°C, suitable for highland, desert and frigid outdoor environments.
6. Complete multi-level protection
   Comprehensive protection functions cover PV reverse polarity, input overvoltage/undervoltage, output overvoltage, short circuit, over-temperature, fan failure and battery reverse charging blocking.