Stucke Elektronik SYMAP®BCG Power Management and protection device
SYMAP® BCG is the flagship “All-in-One” solution from Stucke Elektronik.
It is a sophisticated digital platform that combines Power Management System (PMS) logic with comprehensive Generator Protection and Engine Control.
It is designed to be the primary controller for each generating set in a complex power plant or shipboard grid.
1. Product Description
SYMAP® BCG stands for Bus-tie, Control, and Generator protection.
It is a microprocessor-based system that manages the entire lifecycle of a power source—from starting the engine and synchronizing with the busbar to load sharing and protecting the alternator against electrical faults.
By integrating these functions into a single unit, the BCG eliminates the need for separate PLC-based power management, external synchronizers, and standalone protection relays, significantly reducing the complexity of switchgear wiring.
2. Technical Parameter Table
| Category | Specification |
| Power Supply | 24V DC (Range: 18V – 36V DC) |
| AC Measurement | 3-phase Voltage (Gen & Bus), 3-phase Current, 1x Earth Current |
| PMS Functions | Auto-start/stop, Auto-synchronizing, Load Sharing (kW/kVAr), Heavy Load Start |
| Generator Protection | Overcurrent (50/51), Reverse Power (32), Differential (87G), Over/Under Voltage/Freq |
| Engine Interface | Speed Governor Control (Analog/CAN), AVR Control, Start/Stop Logic |
| I/O Capacity | ~18 Digital Inputs, ~15 Relay Outputs (Expandable via modules) |
| Communication | Dual Ethernet (IEC 61850), Modbus TCP/RTU, Profibus DP, CANbus |
| Redundancy | 3-CPU Architecture (Control, Protection, and Watchdog) |
| Data Logging | High-resolution Disturbance Recorder & 5,000+ Event SOE |
3. Related Models
The BCG series is often customized for specific power levels:
SYMAP® BCG-Standard: Integrated PMS and protection for LV/MV generators.
SYMAP® BCG-D: Includes integrated Differential Protection for high-reliability generators.
SYMAP® BCG-C (Compact): A smaller form factor for space-constrained control panels.
SYMAP® BCG-HV: Optimized for high-voltage generators with PT/CT ratio scaling.
SYMAP® BCG
4. Application Cases
Marine Propulsion Plants: Managing multiple diesel generators on LNG carriers, tankers, and cruise ships.
Offshore Drilling Rigs: Controlling the power grid for DP3 (Dynamic Positioning) vessels where total system reliability is mandatory.
Islanded Power Stations: Managing remote microgrids combining diesel, gas, and renewable sources.
Critical Backup Power: Emergency power systems for airports and large-scale data centers requiring “black-start” capability.
5. Product Advantages and Features
Integrated Synchronizer & Load Sharer: Features high-precision automatic synchronization and active/reactive load sharing without external hardware.
Fail-Safe Operation: The 3-CPU system ensures that if the “Management” CPU fails, the “Protection” CPU remains fully functional to trip the breaker during a fault.
Black-out Prevention: Includes “Load Shedding” and “Heavy Load Inquiry” logic to prevent the grid from collapsing when large motors are started.
User-Friendly HMI: Large backlit LCD with vector diagrams, allowing operators to see the phase relationship between Generator and Busbar in real-time.
Global Certifications: Type-approved by all major marine classification societies (DNV, LR, ABS, BV, CCS, etc.).
6. Other Models in the Same Series
The SYMAP® family offers specialized units for every node in the grid:
SYMAP® EC: Engine Control only (Start/Stop/Governor).
SYMAP® G / F: Dedicated Generator or Feeder protection.
SYMAP® BC: Bus-tie Control for connecting busbar segments.
SYMAP® T / M: Transformer and Motor protection.
SYMAP® BAT / DC: For battery energy storage and DC grid applications