Solar Lattice

Product

CSI-50/60/66KTL-GS-FL

ID
prod:canadian-solar-50-66ktl-gs-fl
IRI
https://solarlattice.org/kb/prod/canadian-solar-50-66ktl-gs-fl
Status
active
Also known as
CSI-50KTL-GS-FL, CSI-60KTL-GS-FL, CSI-66KTL-GS-FL, CSI-50KTL-GS, CSI-60KTL-GS, CSI-66KTL-GS
Category
Inverters
Make
canadian-solar
Product level
family

The CSI-50/60/66KTL-GS-FL family is a line of Canadian Solar three-phase grid-tied PV inverters. They convert DC from the array into AC that can supply local loads and feed the grid. The manual covers four models: CSI-50KTL-GS-FL, CSI-50KTL-GS, CSI-60KTL-GS and CSI-66KTL-GS. They are rated at 50, 60 and 66 kW on a 480 V AC grid. The 50 kW models have a rated grid output current of 60.2 A, and the manual's maximum efficiency figure is above 98.8 percent. The units are transformerless, NEMA 4X enclosures. Surge protection is DC class II, with AC class III as an option. Over- and under-voltage and frequency trip times can be set in the grid protection settings. Listed compliance includes CSA C22.2 No. 107.1, UL 1741, IEEE 1547, UL 1998 and FCC Part 15 Class B.

Claims

manufactured_by

c1 drafted · lead Canadian Solar

instance_of

c2 drafted · lead Inverter

Three-phase grid-tied PV inverter that converts DC from the PV array to AC for local loads and the grid.

rated_power

c3 drafted · lead nominal 50 KiloW

Conditions: CSI-50KTL-GS-FL and CSI-50KTL-GS

review note: possible conflict with c4 (same source; check the conditions); possible conflict with c5 (same source; check the conditions)

c4 drafted · lead nominal 60 KiloW

Conditions: CSI-60KTL-GS

review note: possible conflict with c3 (same source; check the conditions); possible conflict with c5 (same source; check the conditions)

c5 drafted · lead nominal 66 KiloW

Conditions: CSI-66KTL-GS

review note: possible conflict with c3 (same source; check the conditions); possible conflict with c4 (same source; check the conditions)

nominal_voltage

c6 verified · fact nominal 480 V

Conditions: Rated AC grid voltage, all models

verified by: review-workflowverified on: 2026-10-24

rated_output_current

c7 drafted · lead nominal 60.2 A

Conditions: Rated grid output current, CSI-50KTL-GS-FL

efficiency

c8 drafted · lead ≥ 98.8 PERCENT

Conditions: Maximum efficiency, CSI-50KTL-GS-FL

c9 drafted · lead ≥ 98.8 PERCENT

Conditions: Maximum efficiency, CSI-60KTL-GS and CSI-66KTL-GS

frequency

c10 verified · fact 59.5–60.5 HZ

Conditions: Operating range of utility frequency, CSI-50KTL-GS-FL

verified by: review-workflowverified on: 2026-10-24

certified_to

c11 drafted · lead UL 1741 proposed

c12 drafted · lead IEEE 1547 proposed

review note: support check: partial - IEEE1547 is listed as compliance for the 50 kW model; 60/66 passage shows garbled 'IEEE1S47', and 'certified' is stronger than 'compliance' listing.; review: partial - IEEE1547 compliance is listed only for the 50KTL-GS-FL model, so the claim's coverage of the 60/66 models is not shown in the quoted passage.

c13 drafted · lead CSA C22.2 No. 107.1 proposed

c14 drafted · lead UL 1998 proposed

c15 drafted · lead FCC Part 15 proposed

Class B

uses_protocol

c16 drafted · lead Wi-Fi

Listed as an interface option

review note: support check: partial - WIFI listed as interface only for the 60/66 models in the passage, not the -FL model.; review: partial - WIFI is listed as an interface only for the 60KTL-GS and 66KTL-GS models, not for the 50KTL-GS-FL model, so the claim's coverage of the whole family is not fully supported.

c17 drafted · lead Cellular data

GPRS listed as optional interface

review note: support check: partial - GPRS optional interface is listed only for the 60/66 models, not the -FL model; GPRS as cellular is implied.

implements

c18 drafted · lead Surge protection

Protection listed as DC class II, AC class III optional

Referenced by

Data