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ABB UAD154A protection relay

In stock

The UAD154A is part of ABB’s 650 series relays, designed for flexible and reliable protection.

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ABB UAD154A

Here are the technical parameters for the ABB UAD154A (a differential protection relay from the ABB Relion 650 series):

ABB UAD154A Technical Parameters

General Characteristics

  • Application: Differential protection for generators, motors, transformers, and busbars.
  • Protection Functions:
    • Differential protection (87G, 87M, 87T)
    • High-impedance differential protection (optional)
    • Backup protection functions (e.g., overcurrent, negative sequence)

Electrical Ratings

  • Rated Voltage (Un):
    • 24–48 V DC (auxiliary supply)
    • 110–250 V DC/AC (typical)
  • Current Inputs:
    • Rated current (In): 1 A or 5 A (configurable)
    • Thermal withstand: Continuous 2 × In, 1 sec 100 × In

Protection Settings

  • Differential Protection:
    • Pickup setting: Adjustable (typically 5–50% of In)
    • Slope characteristics (e.g., 10%, 20%, 30%)
    • Harmonic restraint (2nd & 5th harmonics for inrush blocking)
  • Operating Time: < 20 ms (for high-set differential)

Communication & Interfaces

  • Communication Protocols:
    • IEC 61850 (GOOSE, MMS)
    • Modbus RTU/Modbus TCP
    • DNP3.0 (optional)
  • Ports:
    • Ethernet (RJ45)
    • Optical/fiber ports (optional)

Mechanical & Environmental

  • Housing: Standard 19″ rack mount (4U) or panel mount
  • Operating Temperature: -25°C to +55°C
  • Ingress Protection: IP20 (standard)

Certifications & Standards

  • Standards Compliance:
    • IEC 60255 (protection relays)
    • IEEE C37.90 (EMC immunity)
    • CE, UL (depending on variant)

Main Brand:

ABB      Allen-Bradley      Alstom      Bently         Emerson     Foxboro

GE       MOOG       Schneider       Woodward       HIMA        Honeywell  

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First hand source, affordable price. Spot inventory!

•Shipping Port: Xiamen

•Ship to you via Fedex/DHL/TNT/UPS/EMS

•Package: Original packing with cartons

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