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Overview
Description
SUN2000 solar inverters are grid-tied PV string inverters that convert the DC power generated by PV strings into AC power and feed the power into the power grid.
Characteristics
Smart
- Ten independent maximum power point tracking (MPPT) circuits and 20 PV string inputs. Flexible configuration of PV strings is supported.
- Smart PV module self-learning: Automatically detects PV module failures, helping rectify faults. Optimizes the working mode to obtain the optimal working mode of the system.
- Smart air cooling: Adjusts the fan speed based on the ambient temperature and load to ensure the service life of fans and avoid frequent maintenance.
- MBUS networking: Uses the existing power line for communication and does not require additional communications cable, which reduces the construction and maintenance costs and improves communication reliability and efficiency.
- Smart I-V curve diagnosis: Implements I-V scanning and health diagnosis for PV strings. In this way, potential risks and faults can be detected in time, improving the plant operation & maintenance (O&M) quality.
Safe
- Embedded DC and AC surge protection devices (SPDs).
- Embedded residual current monitoring unit: Immediately disconnects from the power grid upon detecting that the residual current exceeds the threshold.
Networking
SUN2000 solar inverters apply to grid-tied systems of large-scale PV plants and commercial distributed grid-tied systems. Typically, a grid-tied PV system consists of the PV string, solar inverter, AC combiner box, and transformer station.
Figure 2-4 Networking
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(1) PV string |
(2) SUN2000 |
(3) AC combiner box |
(4) Transformer station |
(5) Power grid |
- |
- Connect the SUN2000-125KTL-M0 to a dedicated power transformer instead of a low-voltage overhead power cable.
- In a non-low-voltage grid-connected scenario, the SUN2000-100KTL-M1, SUN2000-100KTL-INM0, and SUN2000-75KTL-M1 need to connect to an isolation transformer and avoid overhead cabling.
Supported Power Grids
- SUN2000-110KTL-M0, SUN2000-100KTL-M0, SUN2000-100KTL-M1, SUN2000-100KTL-INM0, and SUN2000-75KTL-M1 solar inverters support the TN-S, TN-C, TN-C-S, TT, and IT power grids.
- The SUN2000-125KTL-M0 supports only the IT power grid.
Figure 2-5 Supported power grids
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