SUNNY TOWER

The flexible solution for commercial PV systems

SMA brings you the best in commercial inverter solutions: the Sunny Tower. Designed with the installer in mind, we’ve combined ease of installation, lowest specific cost ($/watt), and the highest efficiency to maximize rebates and power production while minimizing your payback period. The Sunny Tower combines all the advantages of string inverters with the installation advantages of central inverters. The Sunny Tower offers you the flexibility and reliability you’ve come to expect from SMA.

  • 10 year standard warranty
  • Prewired at factory for 3-phase utility interconnection
  • Integrated load-break rated lockable AC/DC disconnect switch



  • Internet-ready with Sunny WebBox
  • Improved CEC efficiency
  • Integrated fused series string combiner
  • Sealed electronics enclosure & OpticoolTM



  • Ideal for commercial applications
  • Rugged stainless steel outdoor-rated enclosure
  • UL 1741/IEEE-1547 compliant
  Sunny Tower with 6 Sunny Boy 6000US Sunny Tower with 6 Sunny Boy 7000US Sunny Tower with 6 Sunny Boy 8000US
Recommended Maximum PV Power (Module STC) 45.0 kW 52.5 kW 60 kW
DC Maximum Voltage 600 V 600 V 600 V
Peak Power Tracking Voltage 250 – 480 V 250 – 480 V 300 – 480 V
DC Maximum Input Current 150 A 180 A 180 A
Number of Fused String Inputs 24 x 15 A (AC / DC disconnect) 24 x 15 A (AC / DC disconnect) 24 x 15 A (AC / DC disconnect)
PV Start Voltage (Adjustable) 300 V 300 V 365 V
AC Nominal Power / Maximum Power* 36.0 kW / 36.0 kW 42.0 kW / 42.0 kW 48.0 kW/ 48.0 kW
AC Maximum Output Current (3-Phase Only)
(per phase @ 208 V, 240 V, 277 V)		 100 A, 87 A, 44 A 117 A, 101 A, 51 A N/A, 116 A, 58 A
AC Nominal Voltage Range (3-Phase Only) 187 – 229 V @ 208 V Delta or WYE
211– 264 V @ 240 V Delta
244 – 305 V @ 277 V WYE		 187 – 229 V @ 208 V Delta or WYE
211– 264 V @ 240 V Delta
244 – 305 V @ 277 V WYE		 N/A @ 208 V
211– 264 V @ 240 V Delta
244 – 305 V @ 277 V WYE
AC Frequency: nominal / range 60 Hz / 59.3 – 60.5 Hz 60 Hz / 59.3 – 60.5 Hz 60 Hz / 59.3 – 60.5 Hz
Power Factor (Nominal) 0.99 0.99 0.99
Peak Inverter Efficiency 97.0% 97.1% 96.5%
CEC Weighted Efficiency 95.5% @ 208 V, 240 V
96.0% @ 277 V		 95.5% @ 208 V
96.0% @ 240 V, 277 V		 N/A @ 208 V
96.0% @ 240 V, 277 V
Dimensions: W / H / D in inches 43.3 / 70.5 / 39 43.3 / 70.5 / 39 43.3 / 70.5 / 39
Weight: Tower / 6 Inverters / Total Shipping 330 lbs / 846 lbs / 1388 lbs 330 lbs / 846 lbs / 1388 lbs 330 lbs / 888 lbs / 1430 lbs
Ambient Temperature Range -13 to 113 °F -13 to 113 °F -13 to 113 °F
Power consumption at night 0.6 W 0.6 W 0.6 W
Topology LF transformer LF transformer LF transformer
Cooling Concept OptiCoolTM, forced active cooling OptiCoolTM, forced active cooling OptiCoolTM, forced active cooling
Mounting Location: indoor / outdoor (NEMA 3R) yes / yes yes / yes yes / yes
LCD Display yes yes yes
Communication: RS485 / wireless opt./opt. opt./opt. opt./opt.
Warranty: 10-year yes yes yes
Compliance: IEEE-929, IEEE-1547, UL 1741, UL 1998, FCC Part 15 A & B yes yes yes
       
NOTE: US inverters ship with gray lids.      
Data at nominal conditions      
*ST48 is current limited to 46kW
@ 240 V		      
Type Designation ST36 ST42 ST48

Downloads

Language:
Catalog


1.286 KB
SUNNY TOWER - The Flexible Solution for Commercial PV Systems
Type: Catalog
Language: English (US)
Document number: SUNNYTOWER-AUS092611
Version number: 1.1
Data sheet


469 KB
SUNNY TOWER 36 / 42 / 48 - The flexible solution for commercial PV systems
Type: Data sheet
Language: English (US)
Document number: SUNNYTOWER-DUS101118
Version number: 1.8


180 KB
Monitoring Solutions - Accurate revenue grade metering & data communication
Type: Data sheet
Language: English (US)
Document number: POWERMEAS-HUS093016
Version number: 1.6
Installation Guide


4.695 KB
SUNNY TOWER ST6US - Mounting Frame for utility interactive Inverter
Type: Installation Guide
Language: English (US)
Document number: ST6US-IUS092011
Version number: 1.1
Certificate


335 KB
UL-Notice of Authorization to apply the UL Mark - SUNNY TOWER 36 / 42
Type: Certificate
Language: English (US)
Document number: NOA_ST36_ST42
Warranty


681 KB
SMA Factory Warranty - Sunny Boy, Windy Boy, Sunny Mini Central, Sunny Tower, Sunny Boy Control (Light, Plus), Sunny Beam, Sunny WebBox, Sunny Matrix, Sunny SensorBox, SC/SB Combiner Boxes
Type: Warranty
Language: English (US)
Document number: GEBED_SBSMC-ZUS100816
Version number: 1.6


701 KB
EXTENDED WARRANTY REGISTRATION - SB 3000US, SB 4000US, SB 5000US, SB 6000US, SB 7000US, SB 8000US, SB 2000HFUS, SB 2500HFUS, SB 3000HFUS, Sunny Tower 36/42/48, SB 700U, SB 1100U, SWR 1800U, SWR 2100U, SWR 2500U, SB 3300U, SB 3800U, SB 6000U, SI 4248, SI 5048, Sunny Boy Control (Light, Plus), Sunny Beam, Sunny WebBox, Sunny Matrix, Sunny Sensor Box, SC/SB Combiner Boxes, WB 3000US, WB 5000US, WB 6000US, WB 7000US, WB 8000US
Type: Warranty
Language: English (US)
Document number: B-GV_ZUS100213
Version number: 1.3
Promotion Material


286 KB
INVERTER GUIDE
Type: Promotion Material
Language: English (US)
Document number: INVERTER_POSTER102808
Version number: