The CSI-125K-T600GL02-U is a Canadian Solar three-phase transformerless, grid-support, utility-interactive PV inverter that converts array DC power to AC for local loads and the grid. It delivers up to 125000 VA of apparent power on a 600 V three-phase grid at 60 Hz, with a maximum output current of 120 A. Maximum efficiency is 99.1% and EU efficiency is 98.6%, and the unit operates in ambient temperatures from -25 to 60 °C. For communication it has RS485 and Ethernet, with power line communication available as an option. The standard warranty is 10 years and can be extended to 20 years. An OV-BUS alarm means the inverter has detected high DC voltage on its internal bus. Possible causes are internal damage or a wire that came loose during shipping. Measure the DC and AC voltages and compare them with the LCD. If the readings confirm the fault, replace the inverter.
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manufactured_byc1 drafted · lead Canadian Solar
sec=1.1 h=b26f8ecc3cf9review note: support check: partial - Passage says Canadian Solar inverter manual covers CSI-125-T600GL02-U; the exact model name differs slightly (no K) but manufacturer is stated.
instance_ofThree-phase transformerless grid-support utility-interactive PV inverter
sec=1.1 h=b26f8ecc3cf9rated_powerc3 drafted · lead nominal 125000 V-A
Conditions: Maximum apparent output power
tbl=12.r10 h=a82c9009afeemax_input_voltageConditions: Maximum DC input voltage
tbl=12.r1 h=3b4b33d5b5a9verified by: review-workflowverified on: 2026-10-24
rated_output_currentConditions: Maximum AC output current at 600 V
tbl=12.r12 h=523116ba7347tbl=4.r1 h=4a6bcbaa0bffnominal_voltagec6 drafted · lead nominal 600 V
Conditions: Rated three-phase grid voltage (3/PE)
tbl=12.r11 h=e8912f9cb59atbl=4.r1 h=4a6bcbaa0bfffrequencyc7 drafted · lead nominal 60 HZ
Conditions: Rated grid frequency
tbl=12.r15 h=f7ccfa38da3bc8 verified · fact 59.5–60.5 HZ
Conditions: Grid frequency range
tbl=12.r16 h=e8857e60adebverified by: review-workflowverified on: 2026-10-24
efficiencyc9 drafted · lead nominal 99.1 PERCENT
Conditions: Maximum (peak) efficiency
tbl=12.r17 h=bad6374ce314review note: possible conflict with c10 (same source; check the conditions)
c10 drafted · lead nominal 98.6 PERCENT
Conditions: EU weighted efficiency
tbl=12.r18 h=9106f2fe80e3review note: possible conflict with c9 (same source; check the conditions)
operating_temperaturec11 drafted · lead -25–60 DEG_C
Conditions: Operating ambient temperature range
tbl=12.r23 h=a69ebb279894warranty_termc12 drafted · lead nominal 10 YR
Conditions: Standard warranty
tbl=12.r34 h=43b6f7f53bd8Conditions: Extended warranty option
tbl=12.r34 h=43b6f7f53bd8uses_protocoltbl=12.r33 h=36eb1345b47ctbl=1.r23 h=b8fa5e23d9e5tbl=12.r33 h=36eb1345b47ctbl=1.r24 h=5d58ef208b77c16 drafted · lead Power line communication
Optional
tbl=12.r33 h=36eb1345b47ccertified_toc17 drafted · lead UL 1741 proposed
tbl=12.r29 h=cdba39349e2ec18 drafted · lead UL 1741 SA proposed
tbl=12.r29 h=cdba39349e2ec19 drafted · lead CA Rule 21 proposed
Including Rule 21 Phase II and III
tbl=12.r29 h=cdba39349e2ec20 drafted · lead UL 1998 proposed
tbl=12.r29 h=cdba39349e2ec21 drafted · lead IEEE 1547 proposed
Edition not stated
tbl=12.r29 h=cdba39349e2ec22 drafted · lead FCC Part 15 proposed
Class A and B
tbl=12.r29 h=cdba39349e2ec23 drafted · lead CSA C22.2 No. 107.1 proposed
107.1-16
tbl=12.r29 h=cdba39349e2eapplies_to c7applies_to c7applies_to c7applies_to c8applies_to c7applies_to c6applies_to c6applies_to c9applies_to c8applies_to c7applies_to c2applies_to c6applies_to c7