SG50KTL-M-20

String Inverter

Sungrow SG50KTL-M-20 is a three-phase PV inverter without transformer, which is a critical unit between PV Strings and utility grid in PV power system. Featuring multiple MPPT tracking, PID detects, and high-efficiency, the inverter is dedicated to converting direct power generated by PV modules into alternating current, which conforms to parameters of local grid, and feeds it into the utility grid. 

High Yield

  • Max. efficiency 98.9%
  • Max. DC/AC ratio up to 1.3
  • Long-term overload at 1.1Pn
  • Up to 4 MPP Trackers

Saved Investment

  • Less construction and installation costs in 2MW block
  • Integrated DC combiner box with DC switch,DC fuses and DC/AC Type II SPD

Easy O&M

  • String current monitoring function for fast trouble shooting

Grid Support

  • Comply with CE, G59/3 and VDE 4105
  • Grid support including LVRT, HVRT and FRT
Input (DC) SG50KTL-M-20
Max. PV input voltage 1000 V
Min. PV input voltage / Startup input voltage 300 V / 300 V
Nominal input voltage 590 V
MPP voltage range 300 - 950 V
MPP voltage range for nominal power 500 - 850 V
No. of independent MPP inputs 4
Max. number of PV strings per MPPT 3
Max. PV input current 112 A (28 A / 28 A / 28 A / 28 A)
Max. current for input connector 12 A
Max. DC short-circuit current 140 A (35 A / 35 A / 35 A / 35 A)
Output (AC)
AC output power 55000 VA @ 45 ℃ / 50000 kVA @ 50 ℃
Max. AC output current 80 A
Nominal AC voltage 3 / N / PE or 3 / PE, 230 / 400 V
AC voltage range 310 - 480 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 @default value at nominal power, (adj. 0.8 leading - 0.8 lagging)
Feed-in phases / Connection phases 3 / 3
Efficiency
Max. efficiency / Euro. efficiency 98.9 % / 98.5 %
Protection
DC reverse connection protection Yes
AC short-circuit protection Yes
Leakage current protection Yes
Grid monitoring Yes
DC switch / AC switch Yes / No
DC fuse Yes (positive, 15A)
PV string current monitoring Yes
Anti-PID function Optional
Overvoltage protection DC Type II / AC Type II
General Data
Dimensions (W*H*D) 665*958*257 mm
Weight 70 kg
Isolation method Transformerless
Degree of protection IP65
Night power consumption < 1 W
Operating ambient temperature range -25 to 60 ℃ (> 50 ℃ derating)
Allowable relative humidity range (non-condensing) 0 - 100 %
Cooling method Smart forced air cooling
Max. operating altitude 4000 m (> 3000 m derating)
Display / Communication Graphic LCD / RS485
DC connection type MC4
AC connection type Screw clamp terminal (Max. 50 ㎟ )
Compliance CEA, IEC 62109, IEC 61727, IEC 62116, IEC 61683, IEC 60068, CE ,VDE AR-N-4105 and G59/3
Grid support LVRT, HVRT, active & reactive power control and power ramp rate control
Type designation SG50KTL-M-20

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