The following is an English introduction to the technical parameters of the ABB SPAU 341 C1 Protection Relay with SPCU 1D50 and SPCN 1D56:

ABB SPAU 341 C1 Protection Relay with SPCU 1D50 and SPCN 1D56 - Technical Parameters

1. Product Overview:
   The ABB SPAU 341 C1 is a sophisticated protection relay designed for voltage regulation and protection in electrical power systems. It is typically used in distribution substations to control the voltage of power transformers with on-load tap-changers. The SPCU 1D50 and SPCN 1D56 are components that work in conjunction with the SPAU 341 C1 to provide automatic and manual voltage regulation capabilities.

2. Key Features:

   • Comprehensive Voltage Regulation: The SPAU 341 C1 offers precise voltage control for power transformers, ensuring stable and reliable operation of the electrical grid.
   • Automatic and Manual Operation: With the inclusion of the SPCU 1D50 (Automatic Voltage Regulating Module) and SPCN 1D56 (Manual Voltage Regulating Module), the relay supports both automatic and manual voltage adjustment, providing flexibility in operation.
   • High Immunity to Interference: The relay is designed to withstand electrical and electromagnetic interference, ensuring reliable performance in harsh industrial environments.
   • Advanced Protection Functions: Includes three-phase overcurrent blocking, undervoltage blocking, and line-ｄｒｏｐ compensation to enhance system safety and reliability.

3. Electrical Specifications:

   • Rated Input Voltage: Selectable rated energizing input voltage for phase-to-phase voltage measurement, typically 100 V, 110 V, or 120 V.
   • Current Inputs: Supports 1 A and 5 A tappings on the energizing phase current inputs, allowing compatibility with a wide range of current transformers.
   • Operating Frequency: Designed for operation at 50 Hz or 60 Hz, depending on the regional power grid standards.

4. Communication and Interfaces:

   • Serial Interface: Provides a serial interface for connecting the regulator to higher-level data acquisition systems, local/remote control systems, or other host systems.
   • Fiber-Optic Interface: Supports fiber-optic communication for enhanced noise immunity and long-distance signal transmission.
   • Local Man-Machine Communication: Features push-buttons and a digital display on the front panels of the regulator modules for local operation and monitoring.

5. Software and Configuration:

   • Powerful Software Support: Includes software tools for parameterizing the regulator, reading measured values, events, and storing set values.
   • Fault Recording and Analysis: The relay is equipped with fault recording capabilities to record analog and digital signals during faults, facilitating post-event analysis.

6. Mechanical and Environmental Specifications:

   • Compact Design: The fully equipped voltage regulator includes multiple modules (connection module, I/O module, automatic voltage regulating module, and manual voltage regulating module) in a compact design for easy installation and maintenance.
   • Operating Temperature Range: Designed to operate reliably in a wide temperature range, typically from -20°C to +60°C.
   • Protection Class: Meets relevant protection standards (e.g., IP20 or higher) to ensure dustproof and moisture-resistant properties.

7. Applications:

   • Power Transformers: Used for automatic and manual voltage regulation of power transformers with on-load tap-changers in distribution substations.
   • Industrial Power Systems: Suitable for a wide range of industrial applications where precise voltage control and protection are critical.

8. Certifications and Compliance:

   • Meets or exceeds international standards for electrical safety and electromagnetic compatibility (EMC), ensuring compliance with regulatory requirements.

9. Warranty and Support:

   • Backed by ABB's comprehensive warranty and technical support services, ensuring peace of mind for users.