Stucke Elektronik SYMAP®ECG engine control and generator protection

SYMAP® ECG is the core and best-selling all-in-one product of the German Stucke Elektronik brand.

1 It not only includes engine control functions, but also integrates complete generator protection functions.

1. Product Description

SYMAP® ECG is a two-in-one (2-in-1) integrated controller designed to manage both the “power source (engine)” and the “electricity output (generator)” simultaneously.

In traditional systems, a vehicle engine controller (such as EC) and an independent generator protection device are usually required. However, SYMAP® ECG integrates both into a single enclosure. It operates through three independent microprocessors to ensure a high level of redundancy and safety in the control logic and power protection. 2

2. Technical Parameter Table

Parameter Category    Technical Details

Power Supply    24V DC (tolerance 18V – 36V)

AC Measurement Input    3-phase voltage (up to 690V direct input), 3-phase current (+1 neutral current)

Frequency Range    40 Hz – 70 Hz

Processing System    3-CPU system (main control, measurement, independent watchdog monitoring)

Input/Output (I/O)    Approximately 10-18 programmable digital inputs / approximately 10-15 relay outputs

Analog Interface    Supports 4-20mA, 0-10V input (for pressure, temperature sensors)

Electrical Parameter Measurement    Active/Reactive Power, Power Factor ($\cos \phi$), Harmonic Analysis (THD)

Protection Response Time    < 40ms

Shell Material    Full metal enclosure, excellent electromagnetic compatibility (EMC)

Certification Standards    Complies with mainstream classification societies’ certifications (DNV, LR, ABS, BV, GL, CCS)

3. Related Models

SYMAP® ECG has multiple variants tailored for voltage levels and application scenarios:

SYMAP® ECG-C: Compact integrated solution, suitable for distribution cabinets with limited space.

SYMAP® ECG-D: Enhanced version, usually featuring differential protection (Differential Protection) function, designed for large generators.

SYMAP® ECG-H: High-voltage application version, connected via voltage transformer (PT).

SYMAP®ECG

4. Application Cases

Main power station of ships: Responsible for the automatic start-stop, synchronous grid connection and load distribution of the main generator sets on container ships and oil tankers.

Key facility backup power supply: For instance, emergency power generation units in hospitals and large data centers, extremely high startup success rate and flexible protection capabilities are required.

Offshore drilling platform: Managing high-power diesel generators on complex offshore platforms.

Mobile power station: Integrated control of containerized generator sets.

5. Product Advantages & Features

High integration: Reduces the number of components required for the unit control panel, minimizing the number of failure points and simplifying the wiring complexity.

Comprehensive protection library:

Engine protection: Over-speed, low oil pressure, high water temperature, sensor failure.

Generator protection: Overcurrent (50/51), Short circuit, Over/Under Voltage (27/59), Over/Under Frequency (81), Reverse Power (32), Loss of Magnetism (40).

Powerful synchronization function: Built-in automatic synchronizer, which can precisely control the closing of the circuit breaker and supports manual, semi-automatic and fully automatic modes.

Logic Programming (PLC): Supports complex logical control logic (Boolean Logic), and allows for customizing I/O behaviors according to specific requirements.

High reliability: Made in Germany, specially designed for extreme environments (vibration, high humidity, salt fog).

6. Other Models in the Same Series

The SYMAP® family encompasses all the nodes of the distribution network:

SYMAP® BC (Bus-tie Control): Bus tie control, used for segment management of busbars.

SYMAP® F (Feeder Protection): Feeder Protection: This is a device used for short-circuit and overload protection in power distribution circuits. 3

SYMAP® T (Transformer Protection): Transformer-specific protection. 4

SYMAP® Y (Motor Protection): High-power motor protection and start-up control.