# BR-20 3P Type 2 20kA Surge Protective Device for TN-C Systems
## Introduction to Surge Protection in TN-C Systems
The BR-20 3P Type 2 20kA Surge Protective Device (SPD) is specifically designed for TN-C electrical systems, offering robust protection against transient overvoltages. In today’s increasingly electronic-dependent world, safeguarding electrical equipment from power surges has become more critical than ever.
## Understanding TN-C Systems
TN-C systems combine the protective earth (PE) and neutral (N) conductors into a single conductor (PEN) throughout the distribution system. This configuration presents unique challenges for surge protection that the BR-20 addresses effectively.
### Key Characteristics of TN-C Systems:
– Combined PEN conductor
– Common grounding arrangement
– Specific requirements for surge protection devices
## Features of the BR-20 3P Type 2 SPD
The BR-20 offers comprehensive protection with its advanced design:
– 20kA discharge capacity per phase
– Type 2 classification according to IEC 61643-11
– Specifically designed for TN-C system requirements
– Compact and easy-to-install design
– Visual status indication for quick monitoring
## Technical Specifications
Parameter | Value
Rated Voltage (Un) | 230/400V AC
Maximum Continuous Operating Voltage (Uc) | 320V AC
Nominal Discharge Current (In) | 10kA (8/20μs)
Maximum Discharge Current (Imax) | 20kA (8/20μs)
Voltage Protection Level (Up) | ≤1.5kV
Response Time | <25ns
## Installation Considerations
Proper installation is crucial for optimal performance:
– Should be installed at the main distribution board
– Requires connection to the PEN conductor
– Must be installed by qualified personnel
– Follow all local electrical codes and regulations
– Regular maintenance checks recommended
## Benefits of Using BR-20 in TN-C Systems
The BR-20 provides several advantages for TN-C installations:
– Enhanced equipment protection against lightning and switching surges
– Reduced downtime and maintenance costs
– Compliance with international standards
– Long service life with reliable performance
– Cost-effective solution for surge protection
## Conclusion
The BR-20 3P Type 2 20kA Surge Protective Device offers a specialized solution for TN-C systems, addressing their unique requirements with robust protection capabilities. By implementing this device, facilities can significantly reduce the risk of equipment damage from power surges, ensuring continuous operation and protecting valuable electrical assets.
