ABB

Technical Specifications

• Voltage Range:
  • Primary Voltage: 10–35 kV (compatible with standard MV networks) .
  • Secondary Voltage Input: 100 V (via voltage transformers) or direct sensor inputs (346–2339 mV for voltage dividers) .

Technical Specifications:

• Standards Compliance: IEC 60255 (for relays), IEC 61850 (for communication)
• Protection Functions: Overcurrent, instantaneous overcurrent, earth fault protection, and more
• Measurement Capabilities: Voltage, current, power, frequency
• Communication Protocols: Supports multiple protocols including IEC 61850, Modbus, DNP3, etc.
• User Interface: LCD display with keypad or optional external HMI for easy operation and parameter setting

• Protection Functions:
  • Overcurrent protection (instantaneous and time-delayed)
  • Directional power flow protection
  • Pole slip protection
  • Over/under excitation protection
  • 100% stator earth-fault protection (including star point coverage under all operating modes)
  • Sensitive rotor earth-fault protection
  • Voltage and frequency protection (V/Hz, reactive current, stator voltage, and stator current limiters)

• Processor: High-performance 32-bit DSP + ARM dual-core architecture for rapid signal processing.
• Sampling System: 16-bit ADC with 64 samples per cycle for precise measurement.
• Current Inputs: Standard 1A or 5A CT inputs, with support for Rogowski coil sensors for enhanced flexibility.
• Voltage Inputs: Optional voltage measurement for advanced protection functions.
• Communication: Supports Modbus RTU and IEC 60870-5-103 protocols for seamless integration into SCADA/DCS networks.
• Power Supply: Universal 24-265 V AC/DC for global compatibility.
• Mechanical Design: 1/2 frame width, front-wiring design for space-saving installation in compact switchgear.

• The RET670 supports a wide range of voltages and currents, enabling it to be used in various power system configurations.
• It includes multiple current and voltage inputs for precise measurements and protection requirements.
• Capable of handling different types of faults including overcurrent, earth fault, and differential protection.
• Equipped with high-speed communication capabilities supporting protocols like IEC 61850, making it ideal for modern digital substations.

Technical Specifications:

• Type: Circuit breaker or component within switchgear systems.
• Rated Voltage: Suitable for specific voltage levels, often in the medium voltage range, depending on the exact model and configuration.
• Rated Current: Designed to handle currents up to designated limits, ensuring safe operation under load conditions.
• Interrupting Capacity: Capable of interrupting fault currents without sustaining damage, protecting downstream equipment from potential harm.
• Environmental Endurance: Engineered to withstand harsh environmental conditions, including temperature extremes, humidity, and dust.
• Compliance Standards: Meets international standards such as IEC (International Electrotechnical Commission) and IEEE (Institute of Electrical and Electronics Engineers) standards for electrical safety and performance.