REF543CM129AAAA REF 543 and REF 545 Feeder terminals

Description

REF543CM129AAAA REF 543 and REF 545 Feeder terminals

Feeder terminal for protection, control, measurement and supervision of medium voltage networks
• New application areas for power quality measurement, protection, capacitor bank protection and control and motor protection
• Voltage and current measurement via conventional measuring transformers or current and voltage sensors
• Fixed man-machine interface including a large graphic display, or an external display module for flexible switchgear installation
• Extended functionality including protection, control, measurement, communication, power quality and condition monitoring
• Protection functions including e.g. nondirectional and directional overcurrent and earth-fault protection, residual voltage,
overvoltage and undervoltage protection, thermal overload protection, CBFP and auto-reclosing
• Control functions including local and remote control of switching objects, status
indication of the switching objects and interlockings on bay and station level

• Measurement of phase currents, phase-tophase and phase-to-neutral voltages, residual current and voltage, frequency,
power factor, active and reactive power and energy, etc.
• Condition monitoring including circuitbreaker condition monitoring, trip circuit supervision and internal self-supervision of
the feeder terminal
• Additional functions including synchrocheck, frequency protection, capacitor bank protection and control, measurement
of current and voltage harmonics
• RTD/analogue module for temperature measurement, current/voltage measurement and mA-outputs
• Communication over two communication interfaces: one for local communication
with a PC and the other for remote communication via a substation communication
system
• Part of the ABB Substation Automation system

REF543KM127AAAA

The feeder terminals REF 541, REF 543 and REF 545 differ from each other regarding the number of digital inputs and outputs available. Please, refer to section “Ordering” for
more details. These feeder terminals incorporate a wide range of feeder terminal functions:
• Protection functions
• Measurement functions
• Power quality functions
• Control functions
• Condition monitoring functions
• General functions
• Communication functions
• Standard functions
The function blocks are documented on the CD-ROM “Technical Descriptions of Functions” (1MRS 750889-MCD).
Protection functions
Protection is one of the most important functions of the REF 54_ feeder terminal. The protection function blocks are independent of
each other and have their own setting groups, data recording, etc.
Either Rogowski coils or conventional current transformers can be used for protection functions based on current measurement.
Correspondingly, voltage dividers or voltage transformers are used for protection functions
based on voltage measurement.
For further information about functionality levels and the protection functions included
in them, refer to the table “Functionality levels, protection functions” in section “Ordering”.

Please contact Sunny sales@xiongbagk.cn for the best price.

➱ sales manager: Sunny
➱ email mailto: sales@xiongbagk.cn
➱ Skype/WeChat: 18059884797
➱ phone/Whatsapp: + 86 18059884797
➱ QQ: 3095989363
➱ Website:www.sauldcs.com