A high performance multi MPPT string inverter for utility scale photovoltaic systems. It provides up to 363 kW of output power.

One communication box can manage up to 80 inverters via K Bus and up to 180 devices via RS485.

Up to 15 communication boxes can be networked via fiber optics in a master slave configuration.

Integration into Siemens SICAM is currently in progress and will be completed shortly.

Typically, one communication box is used per transformer station. For larger plants with multiple transformer stations, hierarchical networking may be implemented.

Yes, it is essential for effective communication and integration within the PV plant.

Yes, all parameters and terms are consistent across the web interface, the app, and the manual to avoid confusion during commissioning and service.

Commissioning can be carried out simultaneously via the web interface of the NX Utility AI Manager.

Yes, the relevant grid codes are preconfigured and comply with international standards.

Power limitation can be set via the NX Utility AI Manager’s web interface or via the PPC to meet regional regulations.

The inverter maintains peak performance up to an ambient temperature of 40 °C at DC voltages above 1080 VDC.

IT grid by default.

Yes, the sound values are provided in the data sheet and are based on real measurements, helping avoid additional noise protection measures.

Yes. The inverters continue operating with the last configured parameters and can restart without the box.

• The USB port supplies 5 V and >500 mA
• Only FAT32 USB sticks are supported
• No storage capacity limit for USB sticks
• Grid code specifications can be uploaded via USB; navigation requires the Bluetooth app or the NX Utility AI Manager
• Firmware can be updated via USB; the blueplanet 360 NX3 automatically detects and initiates the upgrade process

Approx. 650 A peak

263 A rms

Approx. 150 ms

Approx. 50 A, 20 ms

• Fan speed is intelligently controlled based on several parameters, including IGBT temperature
• 7 external fans and 3 internal fans
• Air is drawn in from the bottom and exhausted at the top

2 kW

No exact value; practical experience: 100 m

70 kΩ

• RS485 ring: not supported
• RS485 daisy chain: supported

66 kW per MPPT

No altitude related derating occurs up to 4,000 m. Lower temperatures at high altitude generally further reduce derating.

• No auxiliary supply needed when connected to 800 VAC and using K Bus
• If K Bus and 800 VAC are not used, a 230 VAC auxiliary supply is required.

String monitoring can be done either at MPPT level (6 data points) or per individual DC input (30 data points).

At full load and 25 °C, all fans run at full speed. Noise emissions do not increase further with higher ambient temperatures. 

Usually, the number of boxes match the number of transformers. Each box controls the PV section associated with its transformer and is typically installed nearby.

Additional notes:

• Many PPCs have limitations regarding the number of supported NX Utility Communication Boxes or other devices; check your PPC provider's specifications (e.g., meteocontrol)
• Up to 15 NX Utility Communication Boxes can be linked via SFP
• Each box supports two independent anti PID zones

RS485 communication:

• Up to 180 devices per box (theoretical), but maximum RS485 distance is 1 km
• Each box has 6 RS485 ports, each supporting a serial (non ring) chain of 30 devices
• Mixing inverters with other devices on the same RS485 chain is not allowed

K Bus communication:

• Each box supports 2 x 800 VAC windings
• Up to 80 blueplanet 360 NX3 per box (theoretical), but this exceeds the capacity of most transformers
• Two boxes cannot be connected to the same transformer winding due to K Bus signal interference

It meets C5M, which is stricter than C4. C5M certifies suitability for industrial areas with high humidity and aggressive atmospheres, as well as coastal regions with high salt exposure.

This has not been tested.

No. It belongs to Protection Class I (protective grounding required).

Yes. The operating range is 45 Hz to 60 Hz.

No. The AC voltage range is 640 VAC to 920 VAC, which equals 80% Vn ≤ V ≤ 115% Vn.

Standard 4-6 mm² cables with high quality Amphenol connectors. Expansion to 10 mm² is possible. Connectors are replacable, and installation/removal tools are available.

Copper cables up to 185 mm² and aluminum cables up to 500 mm². The plausibility of these values is under review; comparable manufacturers typically support up to 300 mm² for copper.

Via meteocontrol or blue'Log XC systems, with secure data storage on European servers.

Yes, an error logbook is available within the device. The number of stored events is specified in the manual.

Service includes remote monitoring by the customer (not by KACO new energy), parallel commissioning, and on site support. Fans and heat sinks are easily accessible for cleaning and maintenance.

Yes, a warranty extension is available upon request and for an additional fee.

Internal temperature monitoring (DC and AC connection points) prevents overheating.