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ABB REX521EHHPSH02E RELAY
ABB REX521EHHPSH02E RELAY
ABB REX521EHHPSH02E RELAY
ABB REX521EHHPSH02E RELAY
ABB REX521EHHPSH02E RELAY
ABB REX521EHHPSH02E RELAY
ABB REX521EHHPSH02E RELAY
ABB REX521EHHPSH02E RELAY
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ABB REX521EHHPSH02E RELAY

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MOQ : 1 Piece

ABB REX521EHHPSH02E RELAY Specification

  • Contact Form
  • 2NO + 2NC (configurable)
  • Power Consumption
  • <20 VA
  • Contact Material
  • Silver Alloy
  • Coil Voltage
  • 110/220 V AC/DC
  • Working Temperature
  • -10C to +55C
  • Ambient Temperature
  • -10C to +55C
  • Mechanical Life
  • >10,000,000 operations
  • Dielectiric Strength
  • 2 kV AC, 50/60 Hz, 1 min
  • Coil Power
  • <5 W
  • Protect Feature
  • Overcurrent, Earth Fault, Phase Sequence, and more
  • Contact Resistance
  • <=50 m
  • Product Type
  • Numerical Protection Relay
  • Insulation Resistance
  • >= 100 M at 500V DC
  • Theory
  • Digital / Microprocessor Based Relay
  • Usage
  • Protection and control of electrical power systems
  • Contact Load
  • 5A at 250VAC / 30VDC resistive
  • Operate Time
  • <20 ms
  • Terminal Type
  • Screw Terminal
  • Rated Voltage
  • 110/220 V AC/DC
  • Supply Terminal
  • Rear side screw terminals
  • Size
  • Standard Module
  • Color
  • Grey
  • Dimension (L*W*H)
  • Approx. 250 x 177 x 110 mm
  • Weight
  • Approx. 3.5 kg
  • Communication Protocol
  • RS485, Modbus, DNP3, IEC60870-5-103
  • Display
  • LCD multi-line display with LED indicators
  • Compliance
  • IEC 60255
  • Mounting Type
  • Flush/Panel Mount
  • Fault Diagnosis
  • Self-diagnosis and test functions
  • Measuring Functions
  • Voltage, current, power, frequency metering
  • Storage Temperature
  • -40°C to +70°C
  • Event Recording
  • Sequence-of-event (SoE) Recorder
  • IP Class
  • IP40 (front), IP20 (rear)
  • Housing Material
  • Flame Retardant Polycarbonate
  • Firmware Upgrade
  • Field upgradable via front port
 
 

About ABB REX521EHHPSH02E RELAY

ABB REX521EHHPSH02E RELAY


REX521EHHPSH02E ABB Type Designation: Catalog Description: PROTECTION UNIT Long Description: PROTECTION UNIT Categories Parts & Services Medium Voltage Products and Systems Digital Substation Products Feeder Protection and Control REX 521



Reliable Protection for Power Systems

Designed to safeguard electrical power systems, the ABB REX521EHHPSH02E relay provides protection features including overcurrent, earth fault, and phase sequence, ensuring operational safety and minimizing downtime. Its quick operate time and high mechanical life make it ideal for industrial and utility applications.


Advanced Communication and Monitoring

With support for RS485, Modbus, DNP3, and IEC60870-5-103 protocols, the relay allows seamless integration into modern SCADA and control systems. Its multi-line LCD display, LED indicators, and event recording promote easy monitoring and swift fault diagnosis, enhancing operational efficiency.


Field Upgradeable and Durable Design

The relay includes a field-upgradable firmware via its front port, enabling users to keep it updated with the latest features. Manufactured from flame retardant polycarbonate and rated with robust IP classifications, it assures safety and durability even in demanding environments.

FAQ's of ABB REX521EHHPSH02E RELAY:


Q: How can the firmware of ABB REX521EHHPSH02E relay be upgraded in the field?

A: The firmware of the ABB REX521EHHPSH02E relay can be upgraded directly via its front communication port. This process ensures that the relay stays updated with the latest features and security enhancements without requiring removal from its installed position.

Q: What are the primary measuring functions available in the ABB REX521EHHPSH02E relay?

A: The relay offers accurate voltage, current, power, and frequency metering. These measuring functions enable comprehensive system monitoring and help maintain optimal performance across various electrical power applications.

Q: When should the ABB REX521EHHPSH02E relay be used in an electrical power system?

A: This relay is best deployed for the protection and control of electrical power systems where overcurrent, earth fault, phase sequence, and additional protective features are required. Its fast operate time and high reliability make it suitable for industrial, utility, and critical infrastructure settings.

Q: Where should the ABB REX521EHHPSH02E relay be mounted for optimal performance?

A: The relay is designed for flush or panel mounting, making it ideal for installation within control panels or switchgear compartments. Its standard module size and robust terminal design ensure straightforward and secure integration into new or retrofit systems.

Q: What benefits does the self-diagnosis feature bring to daily operations?

A: Self-diagnosis and test functions allow the relay to monitor its operating health and promptly detect any faults. This proactive approach reduces troubleshooting time, supports predictive maintenance, and minimizes system interruptions.

Q: How does the Sequence-of-event (SoE) Recorder function assist in fault analysis?

A: The Sequence-of-event Recorder captures and logs event data, enabling precise fault investigation and system analysis. Operators can review the sequence of events to identify root causes and implement corrective actions efficiently.

Q: What compliance and safety standards does the ABB REX521EHHPSH02E relay meet?

A: This relay complies with IEC 60255 standards for electrical relays and features flame-retardant polycarbonate housing. Its insulation resistance, dielectric strength, and IP classifications ensure safe operation in varied environmental conditions.

ABB REX521EHHPSH02E RELAY
ABB REX521EHHPSH02E RELAY
ABB REX521EHHPSH02E RELAY
ABB REX521EHHPSH02E RELAY
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