Thyristors power controller ELC

proportionaldigitalfor heating systems

Overview
The electrical power control ELC is the modular solution for the power supply and intelligent control of electric boilers and hybrid boilers. The functional unit consists of power cabinets and a control cabinet, and offers a wide range of power levels from 250 to 5,500 kW.

Key benefits

• Optimised operation of electric boiler systems thanks to modern thyristor technology
• Intelligent system protection for very high availability, operational reliability and durability
• Efficient thermal management and temperature concept protects electrical components
• Full operating data transparency and easy monitoring with the Bosch boiler control BCO
• Simpler planning and flexible installation of the electrical power supply
• Expandable and scalable concept: investment for the future tailored to your needs
• Quality from a single source: engineering, manufacturing and service from Bosch

Technical & functional details (descriptive)
The ELC offers stepless control over the entire power range from 0 to 100%. The thyristor technology precisely adjusts the output to dynamic heat energy demands or available surplus electricity while smart full-wave control minimises grid disturbances and ensures high grid stability.

Designed for high redundancy: switching cycle optimisation distributes load evenly across contactors to increase service life. Individual power cabinets can be selectively switched off without interrupting entire system operation. A voltage monitor protects the system in the event of a power failure and enables a controlled restart.

Bosch efficient thermal management uses roof-mounted fans for even temperature distribution; an optional cooling system provides reliable regulation at ambient temperatures up to 45 °C. Each cabinet includes smart temperature monitoring and an associated protection concept.

A PLC in the ELC control cabinet transmits operating data to the Bosch boiler control (BCO) for visualisation; all system information is displayed on one screen. Integrated power and energy meters enable detailed monitoring (standard for systems > 500 kW). Seamless connection to higher-level automation systems is possible using common control-technology protocols.

The modular design allows separate setup of individual functional units. Control cabinet design provides sufficient space for cable connections; additional bases are generally unnecessary. Detailed technical information from Bosch simplifies planning of peripherals, the entire system and all connections. Selective grid disconnection of individual power cabinets allows maintenance during partial load operation and main switches are low-maintenance.

Characteristics / technical specifications

• Commercial designation: ELC
• Function: Modular electrical power control for electric and hybrid boilers (power supply + intelligent control)
• Power range: 250 – 5,500 kW
• Control technology: Thyristor-based, stepless control 0–100%
• System components: Power cabinets and control cabinet (PLC)
• Redundancy / protection: Switching cycle optimisation, selective cabinet shutdown, voltage monitor for controlled restart
• Thermal management: Roof-mounted fans; optional cooling system (operating up to 45 °C ambient)
• Monitoring / metering: PLC integration with Bosch Boiler Control (BCO); integrated power & energy meters (standard > 500 kW)
• Connectivity: Supports common control-technology protocols for integration to higher-level automation
• Modularity / scalability: Expandable modular concept for future power expansions or modernisations
• Manufacturing / quality: Developed and manufactured by Bosch (Made in Germany)
• Service / maintenance: Selective grid disconnection for maintenance; low-maintenance main switches