SG1250UD

Outdoor Central Inverter

SG1250UD is an outdoor central inverter which is specifically designed for large-scale floating PV system. The inverter features IP65 protection, 2 MPPT tracking, anti-corrosion level: C5, that can be used in salt spray environment. The inverter is easy to maintain, which can decrease the initial installation costs as well as the O&M cost for the next 25 years.

High Yield

  • Efficient three-level topology, max. efficiency up to 99 %, European efficiency 98.7 %
  • Full power operation without derating at 50 ℃
  • Long-term overload at 1.1 Pn
  • DC/AC ratio up to 1.5

Saved Investment

  • Can be connected to double-winding transformer,saving transformer costs
  • Integrated SVG function

Easy O&M

  • Integrated zone current monitoring function for fast trouble shooting
  • Modular design easy for maintenance
  • IP65 protection

Grid Support

  • Compliance with standards: CE, IEC 62109,IEC 61727, IEC 62116
  • Low/High voltage ride through (L/HVRT)
  • Active & reactive power control and power ramp rate control
Input (DC) SG1250UD SG1500UD-M
Max. PV input voltage 1100 V 1100 V
Min. PV input voltage / Startup input voltage 520 V / 540 V 580 V / 600 V
MPP voltage range for nominal power 520 – 850 V 580 – 850 V
No. of independent MPP inputs 2  
No. of DC inputs 16  
Max. PV input current 2712 A 2896 A
Max. DC short-circuit current 3200 A  
Output (AC)
Nominal AC power 1386 kVA @ 45 ˚C / 1260 kVA @ 50 ˚C 1650 kVA @ 45 ˚C / 1500 kVA @ 50 ˚C
Max. AC output current 2222 A 2381 A
Nominal AC voltage 360 V 400 V
AC voltage range 288 – 414 V 320 – 460 V
Nominal grid frequency / Grid frequency range 50 Hz / 45 – 55 Hz, 60 Hz / 55 – 65 Hz  
THD < 3 % (at nominal power)  
DC current injection < 0.5 % In  
Power factor at nominal power / Adjustable power factor > 0.99 / 0.8 leading - 0.8 lagging  
Feed-in phases / Connection phases 3 / 3  
Efficiency
Max. efficiency / Euro. efficiency 99.0 % / 98.7 %  
Protection
DC reverse connection protection Yes  
DC input protection Circuit breaker  
AC output protection Circuit breaker  
Overvoltage protection DC Type II / AC Type II  
Grid monitoring / Ground fault monitoring Yes / Yes  
Insulation monitoring Yes  
Overheat protection Yes  
Night SVG function Yes  
Anti-PID function Optional  
General Data
Dimensions (W*H*D) 2150*2120*850 mm  
Weight 1900 kg  
Isolation method Transformerless  
Degree of protection IP65  
Auxilury power supply 220 Vac, 2 kVA  
Night power consumption < 40 W  
Operating ambient temperature range -35 to 60 ℃ (> 50 ℃ derating)  
Allowable relative humidity range (non-condensing) 0 - 95 %  
Cooling method Temperature controlled forced air cooling  
Max. operating altitude 4000 m (> 3000 m derating)  
Display / Communication Touch screen / RS485, Ethernet  
Compliance IEC62109-1, IEC62109-2, IEC61727, IEC62116  
Grid support SVG, LVRT, HVRT, active & reactive power control and power ramp rate control  
Type designation SG1250UD-10 SG1500UD-10

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