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SEB IBF4N User Manual

SEB IBF4N User Manual

Digital overcurrent protection relay for breaker failure function
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DIVISIONE ELETTRONICA E SISTEMI
IBF4N
D
O
P
R
IGITAL
VERCURRENT
ROTECTION
ELAY
B
F
F
FOR
REAKER
AILURE
UNCTION
USER MANUAL
P500D820
March 2018

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Summary of Contents for SEB IBF4N

  • Page 1 DIVISIONE ELETTRONICA E SISTEMI IBF4N IGITAL VERCURRENT ROTECTION ELAY REAKER AILURE UNCTION USER MANUAL P500D820 March 2018...

  • Page 3: Table Of Contents

    Information printed in this manual subject to change without prior notice. This manual must not be reproduced in whole or in part, in any form or by any means without the express written permission of SEB Divisione Elettronica e Sistemi.

  • Page 4: General Characteristics

    If the generator circuit breaker (52G) does not work properly when an open command is applied, the IBF4N protection relay identifies the fault condition and send the command to open the other circuit breaker in order to isolate the busbar.

  • Page 5: Ibf4N Operations

    > 20 V dc / ac LO voltage = 0 ÷ 10 V dc / ac Command and signaling relays The IBF4N controls 4 output relays (named R1, R2, R3 and R4); these relays are programmed to be activated (normally OFF) on the following conditions:...
  • Page 6 The open command to the circuit breaker following a protection trip (digital input DIG2 - status HI) activates the IBF4N protection relay to detect the current that is flowing through the circuit breaker poles and to detect the status of limit switches related to them (digital input DIG1 - signal FC52).
  • Page 7 SEB Divisione Elettronica e Sistemi GENERAL CHARACTERISTICS the IBF4N will start the time delays TFC (related to limit switches) and TI (related to threshold I>) If one of the two conditions is still present when ONE of the time delay expires (time delay TI for the condition of the measured flowing current greater than I>...

  • Page 8: Front Panel Keys

    SEB Divisione Elettronica e Sistemi FRONT PANEL KEYS FRONT PANEL KEYS The 5 push-buttons on the front panel allow to visualize all the protection parameters and to modify the protection set-up. right arrow down arrow programming session activation or parameter confirmation change or increment of the selected parameter reset of the protection relay (ref.

  • Page 9: Front Panel Led Signaling

    SEB Divisione Elettronica e Sistemi FRONT PANEL LED SIGNALING FRONT PANEL LED SIGNALING POWER ⊕ auxiliary supply available (green) FAIL ⊕ fault condition detected by SELF-DIAGNOSIS software (red) REMOTE ⊕ communication session active on RS485 port (red) ⊕ trip condition on I> threshold (following command CAP or CAN) TRIP I>...

  • Page 10: Programming And Test

    SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST PROGRAMMING AND TEST The protection relay is easily programmable following the instructions in the next paragraphs: • HOW TO PROGRAM THE PROTECTION RELAY • HOW TO MODIFY A VISUALIZED PARAMETER All parameters can be freely modified; the proper protection set-up as required by the plant management is submitted to the operator's judgment.

  • Page 11: How To Modify A Visualized Parameter

    SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST How to modify a visualized parameter When the parameter to be modified is visualized on front panel display do the following sequence: PRESS [ENTER] to activate the parameter modification session If one or more parameters are modifiable, on the first of them will appear a blinking cursor.

  • Page 12: Test Of Output Relays

    SEB Divisione Elettronica e Sistemi PROGRAMMING AND TEST Test of output relays When the output relays test is selected (Fig. 2, ref. F3) it is possible to command an output relay (one at the time) to trip from the current status allowing functional tests on electrical plants.

  • Page 13: Display And Programming

    When a permanent or temporary fault condition is detected by the self-diagnosis module, the following message is displayed: FAIL HARDWARE HARDWARE Detected fault condition on hardware or software resources of the protection relay; all functions are suspended. Corrective action - replace the protection relay and contact SEB post sales service...

  • Page 14: Visualization Structure

    SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Visualization structure ALTERNATIVE IBF4N FAIL TRIP DISPLAYS HARDWARE BAUDRATE NR RELAY SER. NR. VERS SW dd/mm/yy IBF4N PROTOCOL nnnn zzzzzzzz zz.zz hh:mm:ss yyyyyyyy INSERT 2 PHASE, 3 PHASE aaaaaaaa Nominal data and time...
  • Page 15 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING From Fig. 1 SETUP NOMINAL In = x A Iprim CONTRAST VALUE xxxxx A LEV n THRESHOL I> I> TI INDIP n.nn In xxxxxx A xx.xx s TFC IND zz.zz s RELAYS...
  • Page 16 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING...

  • Page 17: Address And Time (Fig. 1)

    SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING Address and time (fig. 1) B1 - RELAY MODEL (not programmable) IBF4N B2 - B3 - COMMUNICATION PROTOCOL (programmable) PROTOCOL xxxxxxxx The communication protocol is programmable between the followings: STANDARD ASCII SEB protocol...

  • Page 18: Protection Insertion Selection (Fig. 1)

    SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING B7 - TIME/DATE (programmable) dd/mm/yy hh:mm:ss Time and date are programmable and they are used to mark recorded events. NOTE: the clock is not provided with back-up battery, therefore a loss of auxiliary supply...

  • Page 19: Thresholds And Time Delays Set-Up (Fig. 2)

    SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING The display contrast level is programmable from 0 to 9. The backlighted display is switched off if no push-button is pressed for at least 5 minutes; when one of the front panel push- button is pressed the display is switched on.

  • Page 20: Output Relays Functions (Fig. 2)

    - signal FC52 (HI status - circuit breaker NOT OPEN) DIG2 functional activation of the IBF4N protection following a circuit breaker open command (CAP command) as consequence of a TRIP CONDITION of protective devices (HI status active)

  • Page 21: Parameter Values Visualization (Fig. 3)

    SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING DIG1 DIG2 DIG3 FC 52 Parameter values visualization (fig. 3) L1 - THRESHOLD STATUS The actual status of the I> threshold is displayed; the threshold status can show one of the following values:...

  • Page 22: Events (Fig. 3)

    SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING I1= 0.50 I2= 0.50 I3= 0.50 5.10 Events (fig. 3) On the display are shown the memorized information related to the last 8 TRIP events. The 8 events are recorded and identified with a progressive number from 1 to 8; the more recent event shows a lower number.

  • Page 23: Trip Counters

    SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING It is shown the total delay to the TRIP of the output relays from protection relay IBF4N start condition (see paragraph 1.1). Q5 - Q6 - Q7 - MEMORIZED MEASURED CURRENTS ON EVENT yy.yy In...
  • Page 24 SEB Divisione Elettronica e Sistemi DISPLAY AND PROGRAMMING The trip related to the I> threshold are the trips after the TI time delay (measured flowing current still higher than the threshold I> after the programmed TI time delay), whilst the trips related to the threshold FC52 are the trips after the TFC time delay (circuit breaker not completely open after the programmed TFC time delay).

  • Page 25: Installation

    SEB Divisione Elettronica e Sistemi INSTALLATION INSTALLATION Supplied kit RK VERSION - 19" rack installation (the proper rack is supplied by SEB) • protection relay module IBF4N with rear socket • transparent front panel for rack installation • blister with items 1-2-3-4-5 n°...
  • Page 26 SEB Divisione Elettronica e Sistemi INSTALLATION With reference to the insertion diagram in the next page, the currents measured by the protection relay have the following matching: terminals A1 - A2 terminals B1 - B2 terminals C1 - C2 Other circuits (output relays etc.) It is suggested to terminate the current wiring using plug terminals.
  • Page 27 SEB Divisione Elettronica e Sistemi INSTALLATION...

  • Page 28: Relays R3 And R4 - Signaling / Command Set-Up

    The new configuration is obtained with the following cabling: RS485 serial communication port The digital protection relay IBF4N presents an insulated serial interface RS485 half-duplex that allow the multi-drop connection up to 31 protection units. There are available 2 selectable communication protocols (ref. B2, par. 5.3).

  • Page 29: Technical Data

    SEB Divisione Elettronica e Sistemi TECHNICAL DATA TECHNICAL DATA Measuring inputs Rated phase current (In) 1 A / 5 A programmable Thermal withstand continuously 4 In Thermal withstand for 1 s 100 In Rated frequency 50 / 60 Hz Primary CT’s current...
  • Page 32 SEB DIVISIONE ELETTRONICA E SISTEMI - UFFICIO COMMERCIALE Via Fratelli Ceirano, 19 - 10024 MONCALIERI (TO) tel. +39 011 6474893 - fax +39 011 0432996 web: www.seb-barlassina.it mail to: servizio-clienti@seb-barlassina.it...

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