The Sungrow SG36/60CX-US is a family of string inverters that includes the SG36CX-US and SG60CX-US models. Both models have a CEC efficiency of 98.00 percent. Maximum efficiency is 98.60 percent for the SG36CX-US and 98.80 percent for the SG60CX-US. Full rated power is available across an MPP voltage range of 550 V to 850 V. Each PV input accepts up to 26 A: the SG36CX-US has four inputs and the SG60CX-US has six. The AC voltage range is 422 V to 528 V, and DC current injection is kept below 0.5 percent of rated current. Communication runs over RS485, and SunSpec Modbus is supported for third-party systems. SunSpec and SG Modbus cannot be active at the same time. The SG60CX-US datasheet lists a DC switch, an AC switch, grid monitoring, leakage current protection and PV string monitoring. Status is shown on an LED display. If a product fault occurs during the warranty period, Sungrow will either service the unit for free or replace it with a new one.
<!-- review notes
efficiencyc1 drafted · lead nominal 98 PERCENT
Conditions: CEC efficiency, SG36CX-US and SG60CX-US
tbl=43.r23 h=02d5e93bff1freview note: possible conflict with c2 (same source; check the conditions); possible conflict with c3 (same source; check the conditions)
c2 verified · fact nominal 98.6 PERCENT
Conditions: Maximum efficiency, SG36CX-US
tbl=43.r22 h=468cd74f9f9fverified by: review-workflowverified on: 2026-10-24review note: possible conflict with c1 (same source; check the conditions); possible conflict with c3 (same source; check the conditions)
c3 drafted · lead nominal 98.8 PERCENT
Conditions: Maximum efficiency, SG60CX-US
tbl=43.r22 h=468cd74f9f9freview note: possible conflict with c1 (same source; check the conditions); possible conflict with c2 (same source; check the conditions)
mppt_voltage_rangeConditions: MPP voltage range for rated power, SG36CX-US and SG60CX-US (footnoted in source)
tbl=43.r6 h=e82f97b3ace0max_input_currentc5 drafted · lead nominal 26 A
Conditions: Max PV input current per input; listed as 26A*4 for SG36CX-US
tbl=43.r9 h=6ec56eaa93f0c6 drafted · lead nominal 26 A
Conditions: Max PV input current per input; listed as 26A*6 for SG60CX-US
tbl=43.r9 h=6ec56eaa93f0uses_protocoltbl=44.r23 h=6ab440b4244asec=5.9 h=18a66a841711c8 drafted · lead SunSpec Modbus
Third-party protocol; cannot be used at the same time as SG Modbus
tbl=44.r24 h=0b0919c9c22fsec=h129 h=cd6333af7bc9sec=h125 h=cd6333af7bc9c9 drafted · lead Sungrow SG Modbus proposed
Cannot be used at the same time as SunSpec Modbus
sec=h129 h=cd6333af7bc9sec=h125 h=cd6333af7bc9review note: support check: partial - Warning mentions SG Modbus as exclusive alternative, implying availability, but no passage explicitly lists SG Modbus as used by this product.
implementsc10 drafted · lead String monitoring
Conditions: Listed for SG60CX-US
tbl=44.r7 h=720f6a222443c11 drafted · lead Residual current monitoring
Datasheet lists leakage current protection for SG60CX-US
tbl=44.r3 h=5abe59bb2466review note: support check: partial - Leakage current protection is listed, but equating it with residual current monitoring is a slight stretch; the note itself matches.
c12 drafted · lead DC injection limitation
DC current injection specified below 0.5% of rated current
tbl=43.r18 h=bfb208099126review note: support check: partial - DC current injection <0.5%In is specified, but limitation function is only implied.
applies_to c9applies_to c7applies_to c8applies_to c7applies_to c6applies_to c9applies_to c10applies_to c7applies_to c11applies_to c7applies_to c9applies_to c6applies_to c12applies_to c6applies_to c8applies_to c6applies_to c7applies_to c6applies_to c10applies_to c13applies_to c6applies_to c11applies_to c13applies_to c7applies_to c7applies_to c8applies_to c8applies_to c7applies_to c8applies_to c13applies_to c8applies_to c8applies_to c10applies_to c8applies_to c7applies_to c8applies_to c8applies_to c10applies_to c7applies_to c8applies_to c8applies_to c8applies_to c9applies_to c7applies_to c11applies_to c7