SL-B Series

Skip to content

Product

Willings, a leader in the photovoltaic power conversion systems market, will try to maintain
its front position as an energy technology leader, and to realize its value of new and renewable energy leading company.

Main Product

SL-B Series

  • World's First Multi String Type 2MW Photovoltaic Inverter
  • 250kw Class Power Module Configuration
Performance of Photovoltaic Inverters [Recent 3 years]
Year Performance[MW]
2018 176
2017 217
2016 189
Power[kW] 250, 500, 750, 1000, 1250, 1500, 1750, 2000
IP Rate Indoor(IP20)/Outdoor(IP44)
AC Spec. 3P4W 380Vac(~500kW Class),
3P3W 340Vac (all)
DC Spec. 550 ~ 1000Vdc

SL-B Series

(250KW ~ 2000KW)

  • World's First Multi String Type Photovoltaic Inverter
  • 250kw Class Power Module Configuration
  • Indoor/Outdoor Types of All Capacities Held
  • DC Ground Falult Detection and Protection Functions
Power[kW] 250, 500, 750, 1000, 1250, 1500, 1750, 2000
IP Rate Indoor(IP20)/Outdoor(IP44)
AC Spec 3P3W 340Vac
DC Spec 550 ~ 1000Vdc
Max Efficiency / Euro Efficiency 98.2% ≤ / 98% ≤
Communication Option RS422*2, TCP/IP*1

SL-B Series

(250KW ~ 2000KW)

Power[kW] SL-B250 SL-B500 SL-B750 SL-B1000 SL-B1250 SL-B1500 SL-B1750 SL-B2000
Max. string num.[250kW] 1 2 3 4 5 6 7 8
Max Available PV Power@String / Voltage 250kW / 1000Vdc
Input Operating Volt. Range[Vdc] 550Vdc ~ 1000Vdc
MPPT Voltage Range[Vdc] 550Vdc ~ 800Vdc
Max Input Current@String 450Adc * String
AC Line Interface
Max Continuous Power[kW] 250 500 750 1,000 1,250 1,500 1,750 2,000
Max Efficiency / Euro Efficiency 98.2% ≤ / 98% ≤
Nominal Voltage (3Ø 3W) [Vrms] 340
Operating Voltage Range Nominal Voltage(88% ~ 110%)
Nominal Line Current[Arms] 425 850 1274 1698 2122 2547 2972 3396
Power Factor > 0.99
AC Current THD < 5% Total, <3% Individual
Operator Interface
Input Device LCD / Touch TYPE
Display Parameters AC Voltage, Current, Power / PV Voltage, Current, Power / Today, Total, Max kWh
Size 940*1025*
2226.5
1380*1025*
2226.5
1820*1025*
2226.5
2260*1025*
2226.5
2900*1025*
2226.5
2900*1025*
2226.5
3340*1025*
2226.5
3780*1025*
2226.5

Back to top