1. DL manuals
  2. ABB
  3. Relays
  4. REX 521
  5. Operator's Manual

ABB REX 521 Operator's Manual

Manual is about: Protection Relay

Summary of REX 521

  • Page 1

    Protection relay rex 521 operator’s manual.

  • Page 3

    3 rex 521 issued: 29.11.2001 version: e/04.06.2004 we reserve the right to change data without prior notice. Protection relay operator’s manual contents 1. About this manual .....................................................................5 1.1. Copyrights ..........................................

  • Page 4

    4 1mrs 751107-mum protection relay operator’s manual rex 521 5. Test mode ............................................................................... 27 5.1. I/o test ........................................................................................ 27 5.2. Irf test ..........................

  • Page 5: About This Manual

    1mrs 751107-mum protection relay operator’s manual rex 521 5 1. About this manual 1.1. Copyrights the information in this document is subject to change without notice and should not be construed as a commitment by abb oy. Abb oy assumes no responsibility for any errors that may appear in this docume...

  • Page 6

    6 1mrs 751107-mum protection relay operator’s manual rex 521 1.4. Abbrevitations 1.5. Related documents manuals for the rex 521 parameter and event lists for the rex 521 tool-specific manuals cbfp circuit-breaker failure protection ct current transformer hmi human-machine interface hspo high-speed p...

  • Page 7

    1mrs 751107-mum protection relay operator’s manual rex 521 7 1.6. Document revisions 1.7. Safety information version revision number date history d 25.03.2004 document layout changed e 04.06.2004 pictures updated in tables, chapter 3.2.1. Changes in tables, chapters 3.4.1. And 3.5.1. Warning text ad...

  • Page 8: 2. Introduction

    8 1mrs 751107-mum protection relay operator’s manual rex 521 2. Introduction 2.1. Rex 521 protection relay the protection relay rex 521 is designed for protection, control, measuring and supervision in medium voltage networks. Typical applications include incoming and outgoing feeders as well as sub...

  • Page 9: 3. Instructions

    1mrs 751107-mum protection relay operator’s manual rex 521 9 3. Instructions 3.1. Hmi features • push-buttons for navigating, [c] clear/cancel and [e] enter • language selection • setting values are protected by passwords • display backlight • display contrast • display test • selection of primary v...

  • Page 10

    10 1mrs 751107-mum protection relay operator’s manual rex 521 fig. 3.1.-1 hmi front view 1. Alarm leds 2. Led indicator: trip, cbfp 3. Led indicator: start, block 4. Led indicator: ready, irf, test mode 5. Lcd 6. Optical pc connector 7. Navigation buttons 8. Clear/cancel 9. Enter rex 521_face_a rex ...

  • Page 11

    1mrs 751107-mum protection relay operator’s manual rex 521 11 3.1.1. Push-button functions the hmi includes push-buttons for operating the protection relay. A quick touch on the arrow button up [ ↑ ] or down [ ↓ ] is interpreted as one step upwards or downwards in a menu or as the minimum step up or...

  • Page 12

    12 1mrs 751107-mum protection relay operator’s manual rex 521 3.1.2. Selecting language fig. 3.1.2.-1 selecting language 1. Select with [ ↓ ] and [ → ] buttons configuration in the main menu, general in the group menu, software in the subgroup menu and active language in the parameter menu. 2. Press...

  • Page 13

    1mrs 751107-mum protection relay operator’s manual rex 521 13 3.1.3. Passwords fig. 3.1.3.-1 password menus setting values are protected by passwords. There are two different passwords, one for protecting the hmi setting values and another for protecting settings through serial communication. • the ...

  • Page 14

    14 1mrs 751107-mum protection relay operator’s manual rex 521 fig. 3.1.5.-1 adjusting display contrast • the display contrast may be adjusted anywhere in the menu structure except in the setting menus where the [e] button is used for entering the setting mode. • the selected contrast value is stored...

  • Page 15

    1mrs 751107-mum protection relay operator’s manual rex 521 15 3.2. Menu chart the contents of the menu chart depend on the configuration of the relay. However, the main menu structure is always preserved. Fig. 3.2.-1 an example of a menu chart structure hmichart_c 2002-22-01 08:32:23.100 2002-22-01 ...

  • Page 16

    16 1mrs 751107-mum protection relay operator’s manual rex 521 3.2.1. Measurement menu the contents of the measurement menu depend on the relay configuration. If a measurement view is selected, it remains active after the time-out period. The same is true with the manual control view. From other view...

  • Page 17

    1mrs 751107-mum protection relay operator’s manual rex 521 17 * the calculated thermal level of the device, maximum from the stator and the rotor. ** only available in configuration h08 3.2.2. Event menu the event menu ( main menu\measured values\events ) contains the function block name and the eve...

  • Page 18

    18 1mrs 751107-mum protection relay operator’s manual rex 521 fig. 3.2.2.-1 event view 3.2.3. Manual control 3.2.3.1. Local/remote position selection the control position can be changed in control\manual control\ local/remote . • the control mode can be selected by pressing the [e] button and using ...

  • Page 19

    1mrs 751107-mum protection relay operator’s manual rex 521 19 3.2.3.2. Controlling breaker the object control menu is in control\manual control\control cb . Only the current position of the breaker is shown and no control is possible in remote or control off mode. In local mode the state of the brea...

  • Page 20

    20 1mrs 751107-mum protection relay operator’s manual rex 521 the current state of the interlocking of the object can prevent the select or execute requests. In that case the text =interlocked is displayed for three seconds. The attempted operation is cancelled and after the three seconds the curren...

  • Page 21

    1mrs 751107-mum protection relay operator’s manual rex 521 21 3.2.4. Setting parameters the setting parameters are listed in the cd-rom technical descriptions of functions (see “related documents” on page 6). 1. Navigate to the right parameter using the buttons [ ↑ ], [ ↓ ] and [ → ], [ ← ] and the ...

  • Page 22

    22 1mrs 751107-mum protection relay operator’s manual rex 521 when entering single bit values, the bit to be edited may be shifted by pressing the [ → ] button when the cursor is located in the rightmost corner of the display. In that way, the cursor does not have to be moved back and forth between ...

  • Page 23

    1mrs 751107-mum protection relay operator’s manual rex 521 23 fig. 3.3.1.-2 indication of blocking if a protection function trips, the name of the function and the text trip appear on the display. The red led indicator is lit. The faulted phases are displayed in this case. Should the protection func...

  • Page 24

    24 1mrs 751107-mum protection relay operator’s manual rex 521 3.3.3. Condition monitoring indication if the relay configuration includes condition monitoring functions that are not directly related to any protection function or to the internal relay condition, indication messages with the message su...

  • Page 25

    1mrs 751107-mum protection relay operator’s manual rex 521 25 3.4. Led indicators 3.4.1. Green indication led (ready) 3.4.2. Yellow indication led (start) 3.4.3. Red indication led (trip) non-active led: off auxiliary supply voltage has been disconnected. Check that the auxiliary voltage is disconne...

  • Page 26

    26 1mrs 751107-mum protection relay operator’s manual rex 521 3.5. Alarm leds 3.5.1. Alarm led 1-8 steady led: trip a protection function has tripped and an indication message is displayed. The trip indication is latching, that is, it must be reset by pressing the [c] button or via the serial commun...

  • Page 27: 4. Test

    1mrs 751107-mum protection relay operator’s manual rex 521 27 4. Test mode digital inputs, output relays and irf relay may be tested by setting the parameter test mode to testing in the menu main menu\tests\general . When test mode is activated, the green ready indicator is blinking. For more inform...

  • Page 28

    28 1mrs 751107-mum protection relay operator’s manual rex 521 4.3. Function block test the outputs (start and trip) of a function block can be activated locally via the hmi or externally via serial communication. This is possible without setting the relay in test mode as described in “test mode” on ...

  • Page 29: 5. Index

    1mrs 751107-mum protection relay operator’s manual rex 521 29 5. Index a about this manual ....................................................................................... 5 alarm leds .......................................................................................... 9, 26 1-8 ..........

  • Page 30

    30 1mrs 751107-mum protection relay operator’s manual rex 521 l latched output relays resetting ............................................................................................. 11 led indicators ..................................................................................... 9, 25 ...

  • Page 31

    1mrs 751107-mum protection relay operator’s manual rex 521 31 t test display ................................................................................................ 14 function block .................................................................................... 28 i/o ...................

  • Page 32

    Abb oy distribution automation p.O. Box 699 fi-65101 vaasa finland tel. +358 10 22 11 fax. +358 10 224 1094 www.Abb.Com/substationautomation 1m r s 7 511 07 -m u m en 06. 20 04.