Phasor measurement unit (PMU) TPA-02 is intended for measuring the current and voltage phasors with a precise timestamping and subsequent transmission to a vector data multiplexer according to the C37.118 protocol.

Main functions

  • Measuring of current and voltage in the network being monitored
  • Current phase angle calculation (per phase)
  • Voltage phase angle calculation (per phase)
  • Line frequency calculation
  • Frequency rate of change calculation
  • Measurement of generator excitation system`s current and voltage
  • Time synchronization using precise time GLONASS/GPS signals
  • Data transmission over C37.118 protocol

Basic performance data

input voltage measurement limit

100 V

input current measurement limit 5; 10 А
relative current and voltage measurement error up to ± 0,2 %
relative power measurement error up to ± 0,4 %
relative measurement error of the generator excitation system`s current and voltage up to ± 0,4 %
input signals frequency measurement range 45…55 Hz
permissible frequency absolute measurement error up to ± 0,001 Hz
permissible phase shift absolute measurement value ± 0,1°
absolute time synchronization error up to ± 1,0 μs
number of voltage measurement channels 3
number of current measurement channels 3
number of generator excitation system voltage measurement channels* 1
number of generator excitation system current measurement channels* 1
power supply 120–370 VDC, 85–265 VAC
overall dimensions (WхHхD) 270x266x260 mm, 6U enclosure (Euromechanis)

Additional features

  • Fault recording
  • Alarm indication
  • Self-diagnostics
  • Integrated web-interface

Communication modules

2xEthernet 10/100 Base-Tx/Fx

Communication protocols

  • С37–118.2-2011
  • IEC 61850-8-1 (MMS)
  • IEC 61850-9-2 LE (SV)
  • IEC 60870-5-104
  • FTP
  • Proprietary communication protocols

Operating temperature

+1...+50°С

* Generator excitation system`s voltage and current channels are arranged with the help of a UNC-2 detector.

Система Orphus