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33KTLX-G3 is a SOFAR three-phase on-grid inverter rated 33 kW (maximum apparent power 37 kVA), with 3 MPPTs, a 180-1000 V MPPT range and a maximum efficiency of 98.6%. It has IP65 protection, RS485 and Wi-Fi communication, an LCD with Bluetooth and app access, and weighs 36 kg. It includes AFCI for arc fault detection.
33KTLX-G3 is a three-phase on-grid string inverter from SOFAR with a rated power of 33 kW, 3 MPPTs and IP65 protection, designed for small industrial and commercial grid-connected PV systems. The AFCI version includes arc fault detection.
The inverter has 6 DC inputs (2 per MPPT), a maximum input current of 40 A per MPPT and accepts DC overload of up to 150%. On the AC side it tolerates a prolonged 110% overload. It works with PV modules of 500 Wp and above, starts at a low voltage (200 V) and offers I-V curve scanning.
Protections include DC reverse polarity, anti-islanding, leakage current, ground fault, PV string fault monitoring, a DC switch and type II surge protection on DC and AC. The 33KTLX-G3 is wall mounted with the supplied bracket, and at 36 kg it takes at least two people to move. Operating temperature is -30 ... 60 °C with air cooling.
The AFCI function developed by SOFAR identifies the arc signal in the circuit, gives an early warning when an arc fault or short circuit occurs and disconnects the inverter before it can cause a fire.
| Maximum input voltage | 1100 V |
|---|---|
| Rated input voltage | 620 V |
| Start-up voltage | 200 V |
| MPPT operating voltage range | 180-1000 V |
| Full-power MPPT voltage range | 510-850 V |
| Number of MPP trackers | 3 |
| Number of DC inputs | 2 for each MPPT |
| Maximum input current per MPPT | 3 x 40 A |
| Maximum short-circuit current per MPPT | 3 x 50 A |
| Maximum DC power for a single MPPT | 25000 W |
| Recommended maximum PV input power | 49.5 kWp |
| Rated output power | 33000 W |
| Maximum apparent power | 37 kVA |
| Maximum output current | 56 A |
| Rated output voltage | 3/N/PE, 230/400 V |
| Output voltage range | 310-480 V |
| Rated output frequency | 50/60 Hz |
| Output frequency range | 45-55 Hz / 55-65 Hz |
| Active power adjustable range | 0-100 % |
| THDi | under 3% |
| Power factor | 0.8 leading - 0.8 lagging |
| Maximum efficiency | 98.6 % |
| European efficiency | 98.2 % |
| DC reverse polarity protection | Yes |
| Anti-islanding protection | Yes |
| Leakage current protection | Yes |
| Ground fault monitoring | Yes |
| PV-array string fault monitoring | Yes |
| DC switch | Yes |
| AFCI (arc fault detection) | Yes |
| Surge protection (SPD) | PV: type II, AC: type II |
| Ambient temperature range | -30 ... 60 °C |
| Self-consumption at night | under 3 W |
| Topology | Transformerless |
| Degree of protection | IP65 |
| Allowable relative humidity range | 0-100 % |
| Maximum operating altitude | 4000 m |
| Cooling | Smart air cooling |
| Dimensions (W x H x D) | 585 x 480 x 220 mm |
| Weight | 36 kg |
| Display | LCD & Bluetooth + APP |
| Communication | RS485, Wi-Fi |
| Standards | IEC/EN 61000-6-1/2/3/4, IEC 62116, IEC 61727, IEC 61683, IEC 60068-1/2/14/30, IEC/EN 62109-1/2, G99, VDE-AR-N 4105, VDE V 0126-1-1, EN 50549-1, NRS 097-2-1, UNE 217002-2020 |
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