REF601 ABB - Feeder Protection and Control Relay

Brand: ABB
Model: REF601
Product Type: Feeder Protection and Control Relay
Dimensions: Width: 130.0 mm, Height: 160.0 mm, Depth: 151.5 mm
Weight: 3.2 lbs (1.43 kg)

Technical Specifications:

• Nominal Voltage (Vn): 24...240 V AC, 50 and 60 Hz; 24...240 V DC
• Voltage Variation: 85...110% of Vn (20.4...264 V AC); 70...120% of Vn (16.8...288 V DC)
• Input Frequency: 50/60 Hz
• Current Inputs: Rated current, In 1 A or 5 A
• Thermal Withstand Capability: Continuously 4 A or 20 A, For 1 sec 100 A or 500 A
• Dynamic Current Withstand: Half-wave value 250A or 1250A
• Input Impedance: < 100 mΩ or < 20 mΩ

Functions:

• Protection:
  • Non-directional overcurrent protection (Three stages)
  • Ground-fault protection (Two stages)
  • Phase discontinuity protection
  • Negative sequence overcurrent protection
  • Circuit breaker failure protection
• Control: Breaker control functionality, including local HMI operations for opening and closing
• Measurement: Three-phase current measurement, residual current measurement, negative phase sequence current, thermal level
• Event Logging: Stores up to 100 events with associated timestamps
• Fault Recording: Records fault records of analog values for the last five trip events

Communication Options:

• Protocols: MODBUS RTU, IEC 60870-5-103
• Interface: RS-485, 2 wire

Environmental Conditions:

• Operating Temperature Range: -25 to +55 ºC
• Service Temperature Range: -25 to +70 ºC (less than 16 hours)
• Relative Humidity: Less than 93%, non-condensing
• Altitude: Up to 2000 m (6561 ft)