Building a wind farm, solar park, biogas plant or battery storage system involves dozens
of moving parts: civil works, transformers, inverters, SCADA, communication. The one
item that often blocks the grid connection at the last minute is the
protection relay: if it does not carry the right grid-code certification, the DSO
or TSO will not energise your connection, and your project sits idle while you scramble
for a compliant alternative.
SYMAP® Compact+ GC significantly reduces that risk. It is type-certified for Germany under VDE-AR-N 4110/4120 (FGH) and can be configured for the relevant UK G99 grid-connection functions; for other countries the configuration is adapted to the national grid codes, DSO/TSO requirements and the specific point of connection. The device is additionally certified to UL (US) and KTC (Korea) within the applicable model and certificate scope. Engineers can specify it with clear evidence for protection and EZA-Regler functions, significantly simplifying the grid-connection approval path.
Edition 2023-09
Medium Voltage
FGH certified
Edition 2018-11
High Voltage
FGH certified
UK ENA
UK Grid Code
COMPLIANT
Renewable energy sources require different protection and control configurations, from a single generation unit to large plant controllers. Pick your segment, each page describes the Grid Code requirements, the EZA/EZE distinction and the recommended SYMAP® configuration.
Utility-scale PV, commercial solar, onshore and offshore wind parks
Typical requirement: Grid Code compliance per VDE-AR-N 4110/4120 (Germany; other countries per operator requirements) or UK G99, NA protection at the connection point, EZA/EZE controller (Erzeugungsanlagen-Regler), Q/P control, FRT (fault ride-through) and grid-connection coordination.
Recommended products:
• SYMAP® Compact+ GC: one configured device for NA protection and EZA-Regler functions
• FGH certificate: protection device and EZA-Regler, ready for connection
• Plant controller (PPC) for parks with multiple inverters, central management of power and reactive setpoints
Small and medium hydro, run-of-river, pumped storage
Typical requirement: Generator protection (87G, 32, 40, 46, 49, 50/51, 81), automatic synchronization with the grid (25A), parallel operation and island mode, Grid Code documentation for the DSO operator, FGH evidence (protection device / EZA-Regler).
Recommended products:
• SYMAP® Y-G: generator protection for a single unit
• SYMAP® Compact+ GC: for grid connection with Grid Code logic
• SYMAP® BCG / ECG: for hydropower with multiple generators in parallel operation
Biogas plants, gas engines, landfill gas, CHP units
Typical requirement: Gas generator in CHP mode (electrical and thermal energy in parallel), NA protection per VDE-AR-N 4110, parallel-with-grid and island operation, synchronization (25A), electrical protection of the gas genset (e.g. overload, reverse power).
Recommended products:
• SYMAP® Compact+ GC: one device for NA protection, EZA controller and synchronization
• SYMAP® BCG / ECG: for CHP with multiple gas gensets
Grid-connected battery systems, peak shaving, frequency regulation
Typical requirement: AC grid connection of the battery installation with a PCS transformer, NA protection per VDE-AR-N 4110/4120, IEC 62933 standard series for BESS. DC side with monitoring functions (current, voltage, insulation, string balancing). SYMAP® provides a signal interface to the BMS, it is not a BMS replacement, nor a PCS controller.
Recommended products:
• SYMAP® Compact+ GC: AC side, NA protection, EZA controller
• SYMAP® Y-BAT: DC monitoring and BMS interface
PV + battery + diesel, wind + battery + grid, microgrids for remote installations
Typical requirement: Coordinated management across multiple sources (PV, wind, diesel, battery), seamless transition from grid-connected to island mode, grid-forming inverter logic, optimisation by source priority. Compact+ GC as field IED, plant controller as the central logic.
Recommended products: Compact+ GC for individual connection points, BCG/ECG for systems with multiple diesel gensets, Y-BAT for DC battery monitoring, an external plant controller for optimisation.
EZA controller (Erzeugungsanlagen-Regler) is a function used where the grid-code concept requires generation-unit or plant control; in SYMAP® Compact+ GC it is implemented as a certified EZA-Regler configuration communicating with the local inverter or generator. It implements Q/P control and frequency support, and coordinates FRT behaviour according to grid requirements.
Plant Controller (PPC) is the central logic of the whole plant with multiple inverters or generators, it coordinates the setpoints of the individual EZA controllers, dispatch logic per operator signal, and overall park optimisation. PPC is a separate system that integrates with the SYMAP® network over IEC 61850 or Modbus.
For your renewable energy project, send the single-line diagram, plant rating and operator requirement (DSO/TSO) to contact-tender. We propose the SYMAP® configuration with Grid Code documentation.