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XA10
The XA10 protection relay is designed to ensure safety and reliability in medium-voltage radial networks, offering advanced protection for lines, power transformers, and rotating machines.

Reliable Earth Fault Protection
  • In systems with solidly grounded neutral, XA10 provides effective protection against earth faults on lines of any length.
  • In systems with isolated neutral or neutral grounded through Petersen coil and/or resistor, it ensures protection on short lines, preventing unwanted tripping caused by capacitive current contributions during external faults.
Advanced Protection Functions
In addition to phase overcurrent and residual overcurrent protection, XA10 includes:

  • Minimum current protection
  • Negative sequence overcurrent
  • Inverse/positive sequence current ratio monitoring
  • Thermal image protection for lines and transformers
  • Thermal image protection for motors and generators
  • Restricted earth fault protection (low impedance)
  • Rotor lock detection and maximum number of motor starts
Monitoring and Control
XA10 integrates advanced system management features:

  • Breaker trip circuit supervision and failure detection
  • Automatic reclosing with selectable reclosing sequences
Flexibility and Communication
  • Expandable logical inputs and output relays via optional external modules
  • Communication interfaces supporting Modbus® RTU/TCP, IEC60870-5-103, DNP3, and IEC 61850 protocols

Thanks to these features, XA10 is a multifunction relay ideal for customized management of electrical networks, meeting modern requirements for monitoring and control.

FUNCTIONS


STANDARD PROTECTIVE & CONTROL ELEMENTS

  • Negative sequence overcurrent - 46LT
  • Maximum Residual Overcurrent - 50N/51N(1)
  • Calculated Residual Overcurrent - 50N/51N (Comp)
  • Low impedance restricted earth fault - 64REF
  • CT Supervision - 74CT
  • Trip Circuit Supervision - 74TCS
  • Multiple Profiles (A, B, C, D)
  • Second Harmonic Restraint
  • Automatic Recloser - 79
  • CEI 0-16
  • Negative /positive sequence current ratio - I2/I1
  • Thermal Image Transformer - 49LT
  • Breaker Failure - BF
  • Phase overcurrent side H and side L - 50/51
  • Under Current - 37
  • Thermal with Pt100 Probes - 26

COMMUNICATION FUNCTIONS

  • Modbus TCP-IP
  • Modbus protocol RTU RS485 / IEC 870-5-103 / DNP3
  • IEC61850 Ed.1 & Ed. 2

DOWNLOADS

XA10 Coding sheet
XA10 Flyer
XA10 User Manual