Illustration

String inverterCPS (Chint Power Systems)

CPS (Chint Power Systems) CPS SCA50KTL-DO/US-480

Name: CPS (Chint Power Systems) CPS SCA50KTL-DO/US-480
Brand: CPS (Chint Power Systems)

String inverter. 3 models, 36 kW–60 kW AC at 480 V.

UL 1741 SBCEC listed · Aug 1, 2017Installed in 3 SoCal permits

Model

Rated AC power50 kW
CEC weighted efficiency98.5%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · building permits · 3 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB	In permits
CPS SCA36KTL-DO/US-480	36 kW	480 V	36 kW	36 kW	97.5%	400–850 V	Feb 1, 2023	SB	—
CPS SCA50KTL-DO/US-480	50 kW	480 V	50 kW	50 kW	98.5%	480–850 V	Aug 1, 2017	SB	2
CPS SCA60KTL-DO/US-480	60 kW	480 V	60 kW	60 kW	98.5%	540–850 V	Aug 1, 2017	SB	2

DC input (PV side)

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library

CEC test DC voltages (min / nom / max)480 / 730 / 850 V
DC input at rated output (CEC test)50.8 kW

Efficiency

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library

CEC weighted efficiency98.5%
Night-time standby (tare)0.88 W
Power to start converting96.1 W

CEC weighted efficiency is measured by an accredited lab at six power levels and three DC voltages — the number to compare between inverters.

Grid & smart-inverter certification

CEC Grid Support Inverter List (Oct 7, 2026)

UL 1741 SB (3rd ed.)Yes — CSA Group, certificate Sep 28, 2022
UL 1741 SA (SA8–SA13)Yes — CSA Group
Firmware tested (SA)V01.18.00, V01.12.00
Volt-VAr with reactive power priority (SA13)Yes
Freq-Watt / Volt-Watt (SA14–15)Yes
Disable permit service / limit active power (SA17–18)Yes
CSIP (IEEE 2030.5) conformanceVia gateway during testing (Y*)
Monitor key data & scheduling (Rule 21 Phase 3)Yes (attested Feb 1, 2023)
CEC listedAug 1, 2017
Last CEC updateFeb 21, 2023

UL 1741 SB is required for new interconnections in California (Rule 21) since 2026.

Panel compatibility & string sizing

NLR SAM inverter library · NLR PVWatts v8 · CEC PV Module List · Cali-Graf calculation

CityColdest air, °CHottest cell, °C

CPS SCA50KTL-DO/US-480: max DC 850 V · MPPT 480–850 V (CEC test window)

Most-permitted panels in Southern California

Panel	Power	Voc cold	Vmp hot	Panels per string	Installed together
Qcells Q.PEAK DUO BLK ML-G10.C+ 410	410 W	48.1 V	30.6 V	16–17	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 V	30.6 V	16–17	—
LONGi LR5-54HABB-400M	400 W	39.3 V	25.3 V	19–21	—
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	19–21	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 V	27 V	18–20	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	18–20	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	18–20	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	18–20	—
REC Group REC460AA Pure-RX	460 W	68.8 V	47.1 V	11–12	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 V	25.3 V	19–21	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 V	28 V	18–20	—
Tesla TSP-420	420 W	43.4 V	27.7 V	18–19	—

Voltage check only, from CEC panel data and NLR weather for the city. Final design must follow the inverter manual and NEC 690.7.

Installed in Southern California

building permits

Permits name it

Sep 2024 – Jan 2026

Jurisdictions so far

LA County (unincorp.) (2), San Diego County (1)

286.5 kW

Typical system

median of 3 permits

Permits over time

Model named in permit

CPS SCA60KTL-DO/US-480

CPS SCA50KTL-DO/US-480

Only installer and ZIP level is shown — no homeowner names, street addresses or permit numbers. Permits from LA County (unincorp.) come without a contractor license, so they count toward totals but not toward installers. Counts grow as more permit portals are loaded.

Compare with similar 50 kW inverters

CEC Grid Support Inverter List (Oct 7, 2026) · building permits

Inverter	Power	CEC weighted eff.	DC test window	UL 1741 SB	Latest CEC	SoCal permits
CPS (Chint Power Systems) CPS SCAxxKTL-DO/US-480	36 kW–60 kW	98.5%	480–850 V	Yes	2023	4
SolarEdge SExKUS	9 kW–330 kW	99.0%	100–1,400 V	16 of 19	2025	14
SMA STP xx-US-80	27.5 kW–70 kW	97.5%	300–850 V	Yes	2026	—
Yaskawa Solectria Solar PVI xxTL-480	36 kW–100 kW	98.5%	340–850 V	3 of 4	2025	—
SMA SHP FLEX-US-21	55 kW–172 kW	99.0%	372–1,200 V	Yes	2025	—

Same type and grid voltage, power range covering this model; same fields from the same sources.

About CPS (Chint Power Systems)

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerCPS (Chint Power Systems)
Listed in CEC asChint Power Systems America
Websitechintpower.com
Models on CEC lists175

Other series

CPS SCAxxKTL-DO-R/US-480 · 1 permitsCPS SCAxxKTL-DO/US-208 · 1 permitsSCAxxK-T-US-208SCAxxxK-T-US-480SCHxxxK-T-US-480SCHxxxK-T-US-600CPS SCHxxxKTL-DO/US-800CPS SCHxxxKTL-DO/US-480

Questions & answers

How efficient is the CPS (Chint Power Systems) CPS SCAxxKTL-DO/US-480?

The California Energy Commission lists a weighted efficiency of 97.5–98.5% for CPS (Chint Power Systems) CPS SCAxxKTL-DO/US-480 models, measured at six power levels and three DC voltages.

What sizes does the CPS (Chint Power Systems) CPS SCAxxKTL-DO/US-480 come in?

The CEC list includes 3 models from 36 kW to 60 kW AC: CPS SCA36KTL-DO/US-480, CPS SCA50KTL-DO/US-480, CPS SCA60KTL-DO/US-480.

Is the CPS (Chint Power Systems) CPS SCAxxKTL-DO/US-480 certified to UL 1741 SB?

Yes — the CEC Grid Support Inverter List shows UL 1741 SB for all models.

What is the CPS SCA50KTL-DO/US-480’s DC input voltage range?

CEC tested it at 480–850 V DC.

Sources

California Energy Commission — Grid Support Inverter List (solar and battery inverters), data as of Oct 7, 2026. Manufacturer-reported, confirmed by CEC against certificates and test reports.
NLR (formerly NREL) — System Advisor Model CEC inverter library (version 2026.7.3).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
California Energy Commission — PV Module List (module electrical data for the compatibility check).
Building permits — Los Angeles County Public Works (EPIC-LA, unincorporated areas) (Sep 2024 – Dec 2024); San Diego County (Jan 2026). Equipment matched from permit descriptions by model number.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).