solar-inverters

solar-inverter

Fronius SnapINverter Primo

The Fronius SnapINverter Primo is a single-phase, transformerless inverter designed for residential solar systems, with power categories from 3.8 kW to 15.0 kW. It features SnapINverter mounting for quick installation, high reliability, and field serviceability. The inverter supports Fronius SuperFlex Design for system flexibility, Dynamic Peak Manager for shade mitigation, multiple MPP trackers, and integrated data communication via LAN/WLAN. It is compatible with open interfaces for third-party integration but does not support battery backup or power optimizers. Supported standards include UL 1741 and IEC 62109. The device is suitable for complex roof configurations and shaded conditions, providing maximum energy yield and safety (fronius-snapinverter-primo, documents 1, 3, 5, 6, 10, 11, 12, 15).

Images

Fronius SnapINverter Primo
og_image
Fronius SnapINverter Primo
og_image

Pros and cons

Pros

Strengths called out by generated product content.

  • Fronius Primo inverters are considered solid and reliable units.
  • The Primo series supports high DC voltage applications up to 1000V.
  • Fronius inverters have good integration with solar web monitoring and APIs.
  • The Primo inverter series includes features like multiple MPPT trackers and SuperFlex Design.
  • Some users report positive experiences with initial setup and performance.

Cons

Tradeoffs and constraints to review before choosing.

  • There have been reports of unresolved issues related to grid connection and AC wiring.
  • Some users experienced inverter failures, possibly due to wiring or system configuration issues.
  • The Primo inverter's wireless network visibility can be problematic or require troubleshooting.
  • The Primo series may have limited backup power capabilities (e.g., 700W blackout outlet).
  • Installation and commissioning can be complicated, with potential for connection errors.

Notes

Context that does not fit neatly as a pro or con.

  • User opinions vary on whether to choose Primo or newer Gen24 models, often based on future battery plans.
  • Some users prefer Fronius for its monitoring and API openness, but acknowledge monitoring can be outdated.
  • Noise levels from the inverter are generally considered acceptable, with humming during the day.
  • Inverter appearance and integration are appreciated, though some find disconnects and external components unattractive.

Electrical Specifications

Max Output Power
15 kW1
Max Input Voltage
1,000 V
MPPT Tracking
2 count
Input Voltage Range
80 - 1000 V1

Power Ratings

Max Input Power
15 kW2
Rated Power
15 kW
Max Apparent Output Power
3,800 VA

Electrical Input

Start Up Voltage
803

Performance

Efficiency
97 %2
Operating Temperature Range
not explicitly specified1

Electrical Output

Rated Grid Voltage
240 V
Rated Grid Frequency
60 Hz
Grid Frequency Range
66 Hz2
Operation Phase
single-phase2
Rated Grid Current
18.3 A2
Max Grid Current
25 A2

Physical Characteristics

Weight
20 kg
IP Rating
IP65

Connectivity

Communication Interfaces
Energy management, Ethernet LAN, External input, Fronius Solar.web, Modbus TCP, RS422, RS485 Modbus RTU, Signalling output, SunSpec, USB, Wi-Fi

Efficiency

Efficiency Max
97 %2
Mppt Efficiency
99.9 %

Features

Features
Design flexibility, Easy installation, Field-serviceability, High reliability, Maximum energy yield, Maximum safety, Pro-active service solutions, Shade mitigation, SnapIN mounting system, SnapINverter technology1

Protection Features

DC Reverse Polarity Protection
Yes
Short Circuit Protection
Yes
Output Over Current Protection
Yes
Output Over Voltage Protection
Yes
Insulation Resistance Monitoring
Yes
Residual Current Detection
Yes
Surge Protection
Yes
Grid Monitoring
Yes
Islanding Protection
Yes
Temperature Protection
Yes

Physical Dimensions

Physical Length
24.7 cm
Physical Width
16.9 cm
Physical Height
9.1 cm
Type Phase Series Fro P Length
62.74 cm2
Type Phase Series Fro P Width
42.93 cm2
Type Phase Series Fro P Depth
23.11 cm2

General

Warranty
12 years

Sources

  1. Source 3fronius.comfronius.com1 fact
    Open