Description

REB670 is a high-performance busbar protection relay designed for complex substation topologies. It supports advanced analog, binary, and auxiliary DC input modules to ensure reliable, fast fault detection and isolation.

Analog Inputs

• Rated frequency: 50/60 Hz

• Frequency range: ±10%

• Rated current Ir: 1 or 5 A

• Operating range: 0–100 × Ir

• Thermal withstand:

• 100 × Ir for 1 s

• 30 × Ir for 10 s

• 10 × Ir for 1 min

• 4 × Ir continuously

• Dynamic withstand: 250 × Ir (one half wave)

• Burden:

• < 20 mVA at Ir = 1 A

• < 150 mVA at Ir = 5 A

Power Supply Module (PSM)

• Auxiliary DC voltage (EL):

• (24–60) V DC ±20%

• (90–250) V DC ±20%

• Power consumption: Typically 50 W

• In-rush current: < 10 A during 0.1 s

• Supply interruption bridging time: < 50 ms

Binary Inputs and Outputs

• Binary inputs: 16 channels

• Rated DC voltage (RL):

• 24/30 V DC ±20%

• 48/60 V DC ±20%

• 110/125 V DC ±20%

• 220/250 V DC ±20%

Dimensions

• Width: 483 mm (19 in.)

• Height: 132 mm (5.2 in.)

• Depth: 215 mm (8.5 in.)