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ABB Sace TMAX XT XT4 ELECTRONIC Instruction Handbook Manual
ABB Sace TMAX XT XT4 ELECTRONIC Instruction Handbook Manual

ABB Sace TMAX XT XT4 ELECTRONIC Instruction Handbook Manual

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INSTRUCTION HANDBOOK
1SDH002296A1001 - ECN000285442
TMAX XT XT4 ELECTRONIC
Disassembly instructions

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Summary of Contents for ABB Sace TMAX XT XT4 ELECTRONIC

  • Page 1 — INSTRUCTION HANDBOOK 1SDH002296A1001 - ECN000285442 TMAX XT XT4 ELECTRONIC Disassembly instructions...
  • Page 3: Safety Notes

    Disassembly instruction tmaX Xt Xt4 electronic 1. SCOPE Scope of this document is to illustrate the step-by-step disassembly process of ABB SACE Tmax XT XT4 moulded case circuit breaker equipped with an electronic trip unit (type Ekip DIP LS/I). Document is focused on Tmax XT XT4 3p IEC version, anyway it allows to cover other versions of Tmax XT XT4 circuit breaker equipped with an electronic trip unit with just few slight differences to be taken into account.
  • Page 4: Disassembly Process

    INSTRUCTION HANDBOOK 5. SEPARATE TREATMENT Table below lists parts requiring a separate treatment adding information about part location inside circuit breakers and related quantity. Description Position inside circuit breaker Quantity Cap kits In correspondence of circuit breaker connection terminals Cases for microswitches In the right hole of the circuit breaker Plug In the left hole of the circuit breaker...
  • Page 5 Disassembly instruction tmaX Xt Xt4 electronic 6.1 PHASE 1 – CAP KITS Tools Actions to be performed Allen key Insert the flat screwdriver as shown in Picture 2 By means of the allen key remove the screws and push it up in order to remove the cap kits. connected with the cap kits.
  • Page 6 INSTRUCTION HANDBOOK 6.2 PHASE 2 – BREAKING PART FRONTAL Actions to be performed Tools Cross screwdriver By means of the cross screwdriver unscrew By means of the cross screwdriver unscrew the 2 screws located in the upper part of the the 2 screws located in the lower part of the breaking part frontal fixing the breaking part breaking part frontal fixing the breaking part...
  • Page 7 Disassembly instruction tmaX Xt Xt4 electronic By means of the flat screwdriver push up the reset test rod and manually remove it. Disassembled parts • 2 + 2 screws (Metal) • 1 breaking part frontal (Plastic) • 1 reset test rod (Plastic)
  • Page 8 INSTRUCTION HANDBOOK 6.3 PHASE 3 – TOGGLE AND ITS PROTECTION Actions to be performed Tools – Manually lift the toggle and its protection and after separate the toggle from its protection. Disassembled parts • 1 toggle (Plastic) • 1 toggle protection (Plastic)
  • Page 9 Disassembly instruction tmaX Xt Xt4 electronic 6.4 PHASE 4 – TRIP UNIT Actions to be performed Tools Cross screwdriver By means of the cross screwdriver unscrew the Manually disasseble the transparent protection 2 screws fixing the trip unit frontal to the trip from the trip unit frontal.
  • Page 10 INSTRUCTION HANDBOOK Manually slightly pull the trip unit as indicated by the arrow and after lift the trip unit in order to complete the removal Disassembled parts • 2 screws (Metal) • 1 trip unit frontal (Plastic) • 1 trip unit transparent protection (Plastic) • 1 label (Adhesive paper) • 1 trip unit (Plastic and Metal) * *Trip unit will be furtherly disassembled (see Phases 6.11 and 6.12)
  • Page 11 Disassembly instruction tmaX Xt Xt4 electronic 6.5 PHASE 5 – PLASTIC PARTS MOUNTED ON THE BREAKING PART Actions to be performed Tools Flat screwdriver Flat screwdriver Manually slightly push the 2 flaps present on By means of the flat screwdriver lift the plug each case for microswitch located in the right located in the left hole of the breaking part and hole of the breaking part as indicated by the...
  • Page 12 INSTRUCTION HANDBOOK 6.6 PHASE 6 – REAR COVER Actions to be performed Tools Cross screwdriver By means of the cross screwdriver unscrew the Manually remove the rear cover. 2 screws fixing the rear cover to the breaking part. Disassembled parts • 2 screws (Metal) • 1 rear cover (Plastic)
  • Page 13 Disassembly instruction tmaX Xt Xt4 electronic 6.7 PHASE 7 – OPERATING MECHANISM AND TRIPPING SHAFT Actions to be performed Tools Torx key By means of the torx key (size 20) unscrew By means of the flat screwdriver unhook the 2 the 4 screws located in the back part of the springs mounted on the operating mechanism.
  • Page 14 INSTRUCTION HANDBOOK Manually remove the tripping shaft from the By means of the flat screwdriver remove the operating mechanism pulling it as indicated by metal plate mounted on the tripping shaft. the arrow. By means of the flat screwdriver and by means of the pliers dismount the pin and remove the pin and the 2 springs mounted on the pin.
  • Page 15 Disassembly instruction tmaX Xt Xt4 electronic 6.8 PHASE 8 – BREAKING PART COVER AND CONNECTED PARTS Actions to be performed Tools Cross screwdriver By means of the cross screwdriver unscrew the By means of the cross screwdriver uncrew the 2 screws located at the bottom corners of the 6 screws fixing the breaking part cover to the breaking part cover.* breaking part base.
  • Page 16 INSTRUCTION HANDBOOK By means of the pliers remove the hood By means of the flat screwdriver slightly push mounted on the motor operator lever removed on the right the the trip lever mounted in the at previous step. bottom part of the breaking part and then lift the lever in order to complete the removal.
  • Page 17 Disassembly instruction tmaX Xt Xt4 electronic Manually separate the plastic part from the By means of the flat screwdriver remove the metals parts constituting the terminals metal plate from the plastic part constituting connections removed at previous step. terminals connections. By means of the pliers remove the open/close lever.
  • Page 18 INSTRUCTION HANDBOOK 6.9 PHASE 9 – MOVING CONTACTS AND ARCHING CHAMBERS Tools Actions to be performed Flat screwdriver Manually remove the block lever. Manually lift the moving contacts assembly. Pliers By means of the pliers remove the 2 plugs By means of the pliers remove the 2 plugs mounted on the moving contacts assembly*.
  • Page 19 Disassembly instruction tmaX Xt Xt4 electronic By means of the flat screw driver lift the Manually separate the arching chambers from arching chambers and after manually complete their supports. the removal operation. Disassembled parts • 1 block lever (Metal) • 1 moving contacts assembly (Plastic and Metal) • 4 plugs (Plastic) • 6 arching chambers (Plastic and Metal) • 6 arching chambers supports (Plastic and Metal) Note:...
  • Page 20 INSTRUCTION HANDBOOK 6.10 PHASE 10 – FIXED CONTACTS Tools Actions to be performed Cross screwdriver By means of the cross screw driver unscrew Manually push the fixed contacts as indicated the 6 screws located in the back part of the by the arrow.
  • Page 21 Disassembly instruction tmaX Xt Xt4 electronic By means of the flat screwdriver unscrew the By means of the flat screwdriver complete the screw fixing the case side protection to the removal of the case side protections. breaking part base. * Applicable to circuit breakers with V and X breaking capacities * Applicable to circuit breakers with V and X breaking capacities only.
  • Page 22 INSTRUCTION HANDBOOK 6.11 PHASE 11 – TRIP UNIT COVER AND I3 ASSEMBLY Tools Actions to be performed Torx key Manually push the 3 I3 assemblies as indicated By means of the pliers remove the spring by the arrow. mounted on the I3 assembly. No.
  • Page 23 Disassembly instruction tmaX Xt Xt4 electronic Manually remove the wave spring located over the trip coil. Disassembled parts • 3 + 4 screws (Metal) • 3 springs (Metal) • 3 I3 groups (Metal) • 3 I3 supports (Plastic) • 1 trip unit cover (Plastic and Metal) • 1 wave spring (Metal)
  • Page 24 INSTRUCTION HANDBOOK 6.12 PHASE 12 – PRINTED CIRCUIT BOARD, CURRENT SENSORS, TRIP COIL AND TRIP UNIT Tools Actions to be performed Torx key By means of the torx key unscrew the 3 screws Manually lift the protection cover over the located in the bottom part of the trip unit.
  • Page 25 Disassembly instruction tmaX Xt Xt4 electronic Manually remove the wave spring located in the hole previously hosting the trip coil. Disassembled parts • 3 screws (Metal) • 1 protective cover (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 1 printed circuit board (Plastic, Metal and Electronic components) SEPARATE TREATMENT (Printed circuit board) • 3 sensors (Plastic, Metal and Mixture) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 3 supports (plastic) • 1 trip coil (Plastic, Metal and Magnets) SEPARATE...
  • Page 26 INSTRUCTION HANDBOOK...
  • Page 28 — ABB SACE A division of ABB S.p.A. L.V. Breakers Via Pescaria 5, 24123 Bergamo - Italy Phone: +39 035 395.111 Fax: +39 035 395.306-433 abb.it/lowvoltage © Copyright 2022 ABB. All rights reserved. Specifications subject to change without notice.