QIT200-3 Interface Panel 200kW 3 Inverters CEI 0-21 with Test Report
SecSun QIT200-3 interface panel for 200 kWp photovoltaic systems with 3 three-phase inverters. Compliant with CEI 0-21 and CEI EN 61439-1/2. Supplied pre-wired and complete with SPI test report and declaration of conformity. Dimensions: 475×2032×975 mm — 100 kg.
The QIT200-3 is the SecSun interface panel designed for industrial photovoltaic systems of 200 kWp with 3 three-phase inverters in parallel. Compliant with CEI 0-21 and CEI EN 61439-1/2 standards, it is supplied complete with SPI test report (Interface Test Instrument) — the technical documentation required by E-Distribuzione and other grid operators for validating the interface protection of photovoltaic systems connected to the public grid.
Why is the interface panel mandatory for systems over 200 kWp?
The CEI 0-21 standard requires an interface protection system (SPI) for all photovoltaic systems connected to the MV or LV distribution grid with power greater than 11.08 kW. For large systems such as 200 kWp with three three-phase inverters, the interface panel must be sized to handle the combined currents of all inverters and ensure protection coordination according to the requirements of the local grid operator.
QIT200-3 technical specifications
| Product code | QIT200-3 |
| Manufacturer | SecSun / MR WATT – made in Italy |
| System rated power | 200 kWp |
| Supported inverters | No. 3 three-phase inverters |
| Reference standards | CEI 0-21, CEI EN 61439-1/2 |
| SPI test report | Included in the supply |
| Dimensions (WxHxD) | 475 x 2032 x 975 mm |
| Weight | 100 kg |
| Application | Industrial / commercial |
What does the QIT200-3 supply include?
- Pre-wired and tested SecSun interface panel
- CEI 0-21 approved interface relay for 3 three-phase inverters
- SPI test report (Interface Test Instrument) for the GSE/distributor connection application
- Panel single-line diagram
- CEI EN 61439-1/2 declaration of conformity (Di.co)
- User manual and installation instructions
When is the QIT200-3 used?
The QIT200-3 is the right choice for industrial photovoltaic systems of 200 kWp that use three three-phase inverters in parallel connected to the same switchboard section. It is suitable for installations on industrial warehouses, large commercial buildings, ground-mounted systems, and agrivoltaic systems where the overall power requires dedicated management of interface protection for each inverter group.
Frequently asked questions
Is the QIT200-3 already wired or does it require on-site assembly?
The QIT200-3 is supplied fully pre-wired and factory-tested. The installer only needs to connect the cables coming from the three inverters and those going to the grid, following the single-line diagram included in the supply. No internal assembly inside the panel is required.
What is the SPI test report included with the QIT200-3?
The SPI test report (Interface Test Instrument) is the document that certifies the correct operation of the interface relay according to the CEI 0-21 standard. It is a mandatory document required by E-Distribuzione and other Italian grid operators to approve the connection application for large photovoltaic systems. MR WATT includes the test report already completed for the QIT200-3.
Is the QIT200-3 compatible with any 200 kWp three-phase inverter?
Yes. The QIT200-3 interface panel is designed to work with any configuration of 3 three-phase inverters that makes up a total power of about 200 kWp, regardless of brand (Huawei, SMA, Solax, Fronius, ABB/FIMER, Sungrow). The CEI 0-21 interface protection operates independently of the inverter brand.
Which documents are needed for the GSE connection application with the QIT200-3?
For the GSE and local grid operator connection application, the following are typically required: the SPI test report (included), the CEI EN 61439-1/2 declaration of conformity (included), the system single-line diagram including the interface panel, and the technical documentation of the installed inverters. MR WATT provides all documents related to the QIT200-3 at the time of delivery.
Are there SecSun interface panel versions for power ratings other than 200 kWp?
Yes. MR WATT offers the full SecSun QIT range for systems of different sizes: from the single-phase 3 kW QIT3 up to the industrial QIT200-3. For systems with power or inverter configuration different from the QIT200-3, contact MR WATT to receive the correct model or a custom version.
