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4KTLM-G3 is a single-phase SOFAR on-grid inverter of 4 kW (maximum apparent power 4.4 kVA), with 2 MPPT, an MPPT range of 80-550 V and a maximum DC input voltage of 600 V. The maximum efficiency is 98.2%, the maximum AC output current is 20 A and the protection rating is IP65. The dimensions are 349 x 344 x 164 mm (width x height x depth) and the weight is 9.2 kg.
4KTLM-G3 is a single-phase SOFAR on-grid inverter with a rated output power of 4 kW (4.4 kVA maximum apparent power), two MPPT trackers, a DC input of up to 600 V and a maximum efficiency of 98.2%. It has IP65 protection, natural cooling without a fan and weighs 9.2 kg.
The inverter is wall mounted and feeds the energy produced by the PV panels into the single-phase 230 V grid (180-276 V, 50/60 Hz). The two independent MPPT inputs of 15 A each allow two strings with different orientations or tilts to be connected, with a permitted DC overload of 150%. The feed-in limitation function allows the power fed into the grid to be limited.
The protections include DC reverse polarity, anti-islanding, leakage current, ground fault monitoring and PV string fault monitoring, a DC switch and type III surge protection on the DC and AC sides. The LCD display and the Bluetooth connection with an app allow commissioning and reading of the data, and a Wi-Fi or Ethernet stick logger can be added as an option for remote monitoring. The inverter operates between -30 and +60 °C, up to 4000 m altitude.
| Max. DC input voltage | 600 V |
|---|---|
| Rated input voltage | 380 V |
| Start-up voltage | 90 V |
| MPPT operating voltage range | 80-550 V |
| Number of MPP trackers | 2 |
| Number of DC inputs | 1 for each MPPT |
| Max. input current per MPPT | 15 A / 15 A |
| Max. short-circuit current per MPPT | 22.5 A / 22.5 A |
| Rated output power | 4000 W |
| Max. apparent power | 4400 VA |
| Max. output current | 20 A |
| Rated output voltage | L/N/PE, 230 V AC |
| Output voltage range | 180-276 V AC |
| Rated output frequency | 50/60 Hz |
| Output frequency range | 45-55 Hz / 55-65 Hz |
| Active power adjustable range | 0-100% |
| Total harmonic distortion of current (THDi) | under 3% |
| Power factor | 1 (adjustable +/-0.8) |
| Max. efficiency | 98.2% |
| European efficiency | 97.3% |
| DC reverse polarity protection | Yes |
| Anti-islanding protection | Yes |
| Leakage current protection | Yes |
| Ground fault monitoring | Yes |
| PV string fault monitoring | Yes |
| DC switch | Yes |
| Surge protection | type III on the DC and AC sides |
| Ambient temperature range | -30 ... +60 °C |
| Self-consumption at night | under 1 W |
| Topology | transformerless |
| Degree of protection | IP65 |
| Allowable relative humidity range | 0-100% |
| Max. operating altitude | 4000 m |
| Cooling | natural |
| Dimensions (W x H x D) | 349 x 344 x 164 mm |
| Weight | 9.2 kg |
| Display | LCD and Bluetooth with app |
| Communication | RS485, Bluetooth; optional Wi-Fi |
| Standards | IEC/EN 62109-1/2, IEC 62116, IEC 61727, VDE-AR-N 4105, VDE V 0126-1-1, C10/11, UNE 217002:2020, G98/G99, EN 50549-1, ANRE 208 |
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