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SG33/55CX-US | North America String Inverter

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Input (DC)

Max. PV input voltage
1000 V
Min. PV input voltage / Startup input voltage
200 V / 200 V
Nominal input voltage
710 V
MPP voltage range
200 – 1000 V
MPP voltage range for nominal power
500 – 850 V
No. of independent MPP inputs
4 | 6
Max. number of PV strings per MPPT
2 / 2 / 2 / 2 | 2 / 2 / 2 / 2 / 2 / 2
Max. PV input current
26 A * 4 | 26 A * 6
Max. current for input connector
15 A
Max. DC short-circuit current
40 A * 4 |. 40 A * 6

Output (AC)

Max. AC output power
33 kVA @ 45 ℃ (113 ℉) / 30 kVA @ 50 ℃ (122 ℉) | 55 kVA @ 45 ℃ (113 ℉) / 50 kVA @ 50 ℃ (122 ℉)
Max. AC output current
39.7 A | 66.2 A
Nominal AC voltage
3 / N/PE, 277 / 480 V
AC voltage range
422 – 528 V
Nominal grid frequency / Grid frequency range
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
98.70 %
CEC efficiency
98.50 %

Protection and Function

Overvoltage protection
DC Type II / AC Type II
Grid monitoring
✔
Anti-PID function
YES
DC reverse connection protection
✔
AC short-circuit protection
✔
Leakage current protection
✔
AC switch
✔
DC switch
✔
PV string current monitoring
✔
Arc fault circuit interrupter (AFCI)
✔

General Data

Dimensions (W x H x D)
780 × 930 × 310 mm 30.7 × 36.6 × 12.2 in
Weight
62 kg 136.7 lb
Isolation method
Transformerless
Degree of protection
NEMA 4X
Night power consumption
< 2 W
Operating ambient temperature range
-30 to 60 ˚C (> 50 ˚C derating)
Allowable relative humidity range (non-condensing)
0 – 100%
Cooling method
Smart forced air cooling
Max. operating altitude
4000 m (> 3000 m derating)
Display
LED, Bluetooth + APP
Communication
RS485 / optional: WiFi, Ethernet | Third party Communication : SunSpec Modbus
Compliance
UL1741, UL 1741 SA, CA Rule 21, IEEE 1547, IEEE 1547.1, CSA C22 .2, No.107.1-01, UL 1699B and FCC Part 15
Grid Support
LVRT, HVRT, active & reactive power control and power ramp rate control
DC connection type
Screw clamp terminal (10AWG,Cu or Al )
AC connection type
OT(2/0AWG,Cu or Al )

Standard Accessories

DC main output load switch
✖
PV specific application SPD
✖
PV SPD failure monitoring
✖
PV self power supply for internal loads
✖
Communication port
✖
Current and voltage monitoring for each string
✖