Key Features and Specifications:
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Model: REX 5211
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Manufacturer: ABB
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Description: Feeder Protection Relay
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Applications: Incoming and outgoing feeders as well as substation protection
Protection Functions:
- 3-phase non-directional overcurrent protection, 3 stages
- Non-directional earth-fault protection, 3 stages
- 3-phase transformer inrush and motor start-up current detector
- Phase discontinuity protection
- 3-phase thermal protection
- Auto-reclose function
Measurements:
- Primary and unit values 3I 3-phase current measurement
- Neutral current measurement
- Power quality measurement
- Transient disturbance recorder
- Total Harmonic Distortion (THD) Current distortion measurements
Additional Features:
- Circuit breaker control
- Auto-reclosing
- Condition monitoring
- Total harmonic distortion (THD) for power quality measurements
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