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 eliminates that risk. It carries the full set of grid-code type approvals required across Germany, the UK, and most of the EU — signed and stamped by accredited test houses. Engineers can specify it knowing the grid connection will pass.
Edition 2018-11
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 and region) or UK G99, NA protection at the connection point, EZA/EZE controller (Erzeugungsanlagen-Regler), Q/P control, FRT (fault ride-through), automatic synchronization with the grid.
Recommended products:
• SYMAP® Compact+ GC — one device for NA protection and EZA controller
• FGH certificate — certified and ready for grid 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 certificate for connection.
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), gas engine protection against overload and misfiring.
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 part of every individual generation unit per Grid Code requirements — it sits inside SYMAP® Compact+ GC and communicates with the local inverter or generator. It implements Q/P control, frequency regulation, and FRT response to the DSO command.
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.