Related Manuals for ABB TMAX XT XT6 THERMOMAGNETIC
Summary of Contents for ABB TMAX XT XT6 THERMOMAGNETIC
- Page 1 — INSTRUCTION HANDBOOK 1SDH002299A1001 - ECN000285442 TMAX XT XT6 THERMOMAGNETIC Disassembly instructions...
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Page 3: Safety Notes
Disassembly instruction tmaX Xt Xt6 tHermomaGnetic 1. SCOPE Scope of this document is to illustrate the step-by-step disassembly process of ABB SACE Tmax XT XT6 moulded case circuit breaker equipped with a thermomagnetic trip unit. Document is focused on Tmax XT XT6 3p IEC version, anyway it allows to cover other versions of Tmax XT XT6 circuit breaker equipped with a thermomagnetic 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 Plugs In correspondence of circuit breaker upper connection terminals AUE lever group Mounted at the left of the toggle... - Page 5 Disassembly instruction tmaX Xt Xt6 tHermomaGnetic 6.1 PHASE 1 – CAP KITS Tools Actions to be performed Allen key Insert the flat screwdriver as shown in the By means of the allen key remove the screws picture and unhook the cap kits and their plugs connected with the cap kits.
- Page 6 INSTRUCTION HANDBOOK 6.2 PHASE 2 – FRONTAL Actions to be performed Tools Cross screwdriver By means of the flat screwdriver push the test Insert the flat screwdriver as shown in the button in order to bring the circuit breaker in picture and slightly push the screwdriver as trip position.
- Page 7 Disassembly instruction tmaX Xt Xt6 tHermomaGnetic Manually remove the upper and the lower front covers. Disassembled parts • 1 aesthetic front cover (Plastic) • 6 screws (Metal) • 1 upper front cover (Plastic) • 1 lower front cover (Plastic)
- Page 8 INSTRUCTION HANDBOOK 6.3 PHASE 3 – TRIP UNIT Actions to be performed Tools Allen key By means of the allen key unscrew the 6 screws By means of the cross screwdriver unscrew fixing the trip unit to the breaking part. the 2 screw located in the bottom part of the circuit breaker fixing the trip unit to the breaking part.
- Page 9 Disassembly instruction tmaX Xt Xt6 tHermomaGnetic 6.4 PHASE 4 – BREAKING PART COVER Actions to be performed Tools Cross screwdriver By means of the cross screwdriver unscrew the Manually remove the 2 screws and the left and 2 screws fixing the left and the right YO and YU the right YO and YU levers. levers to the breaking part. Torx key No. 25...
- Page 10 INSTRUCTION HANDBOOK By means of the pliers remove the spring By means of the torx key unscrew the 9 screws mounted inside the AUE lever group. fixing the breaking part cover to the breaking part main structure. Manually remove the breaking part cover. By means of the cross screwdriver unscrew the 4 screws fixing the right base accessory to the breaking part.
- Page 11 Disassembly instruction tmaX Xt Xt6 tHermomaGnetic Manually remove the right base accessory. Manually bring the trip test rod and rotate it of 90° anticlockwise and the trip test button automatically will separate from the right base accessory. Manually separate the trip test rod from its By means of the cross screwdriver unscrew spring.
- Page 12 INSTRUCTION HANDBOOK Manually remove the left base group. By means of the pliers remove the 3 grids located in the upper part of the breaking part cover. By means of the flat screwdriver remove the 2 By means of the cutter start removing the shock absorbers located at both sides of the label located on the breaking part cover and breaking part cover.
- Page 13 Disassembly instruction tmaX Xt Xt6 tHermomaGnetic Disassembled parts • 2 + 2 + 9 + 4 + 3 screws (Metal) • 2 YO and YU levers (Metal) • 1 AUE lever group (Plastic and Metal) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 1 + 1 springs (Metal) • 1 right base accessory (Plastic and Metal) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 1 trip test rod (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 1 left base group (Plastic and Metal) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 3 grids (Metal)
- Page 14 INSTRUCTION HANDBOOK 6.5 PHASE 5 – TOGGLE AND ARCHING CHAMBERS Actions to be performed Tools Cross screwdriver By means of the cross screwdriver unscrew the Manually remove the toggle extension. screw fixing the toggle extension to the toggle holder. Pliers Manually remove the toggle protection and the By means of the pliers remove the toggle base.
- Page 15 Disassembly instruction tmaX Xt Xt6 tHermomaGnetic Manually remove the arching chambers. Disassembled parts • 1 screw (Metal) • 1 toggle extension (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 1 toggle protection (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 1 toggle holder (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 1 toggle base (Plastic) • 3 arching chambers (Metal and GP0-3)
- Page 16 INSTRUCTION HANDBOOK 6.6 PHASE 6 – MOBILE CONTACTS ASSEMBLY AND OPERATING MECHANISM Actions to be performed Tools Cross screwdriver By means of the cross screwdriver unscrew By means of the flat screwdriver separate the the 6 screws fixing the upper rear plate and upper rear plate from the breaking part main Flat screwdriver the lower rear plate to the breaking part main...
- Page 17 Disassembly instruction tmaX Xt Xt6 tHermomaGnetic By means of the flat screwdriver clean from By means of the tube key unscrew the 4 nuts silicone rear part of the breaking part main located in the rear part of the breaking part structure.
- Page 18 INSTRUCTION HANDBOOK Manually pull the shaft as indicated by the Lift the breaking part main structure and let arrow and by means of the flat screwdriver the I3 assemblies separate from the breaking remove the 3 benzings. part main structure by gravity. By gravity let the plates fall down from the By means of the allen key unscrew the 3 screws breaking part main structure.
- Page 19 Disassembly instruction tmaX Xt Xt6 tHermomaGnetic Manually remove the S51 and SR levers Manually remove the 2 supports mounted on mounted on the mobile contacts assembly. the mobile contacts assembly. Disassembled parts • 6 + 2 + 6 + 3 screws (Metal) • 1 rear upper plate (Plastic) • 1 rear lower plate (Plastic) • 1 protection plate (Plastic) • 4 + 3 nuts (Metal) • 4 + 2 + 3 washers (Metal) • 3 dowels (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 3 benzings (Metal) • 3 I3 assemblies (Metal)
- Page 20 INSTRUCTION HANDBOOK 6.7 PHASE 7 – BREAKING PART CASE Actions to be performed Tools Torx key By means of the torx key unscrew the 3 screws Manually remove the 3 arc runners. fixing the arc runners to the breaking part case.
- Page 21 Disassembly instruction tmaX Xt Xt6 tHermomaGnetic Manually pull the main fixed contacts as By means of the cutter start removing the label indicated by the arrow, slightly lift them and located on side of the circuit breaker case and after manually complete the removal.
- Page 22 INSTRUCTION HANDBOOK 6.8 PHASE 8 – TRIP UNIT FRONTAL Actions to be performed Tools Torx key Manually disassemble the transparent By means of the cutter start removing the label protection from the trip unit frontal. located on the trip unit frontal and manually No.
- Page 23 Disassembly instruction tmaX Xt Xt6 tHermomaGnetic 6.9 PHASE 9 – TRIP UNIT MAIN STRUCTURE Actions to be performed Tools Cross screwdriver By means of the cross screwdriver unscrew the Manually remove the trip unit cover. 4 screws fixing the trip unit cover to the trip Flat screwdriver unit main structure.
- Page 24 INSTRUCTION HANDBOOK Manually remove the 2 pins mounted inside the By means of the flat screwdriver slightly push trip shaft. the hook as indicated by the arrow. Manually remove the hook and its spring. By means of the cross screwdriver unscrew the 6 screws located in the bottom part of the trip unit main structure.
- Page 25 Disassembly instruction tmaX Xt Xt6 tHermomaGnetic Disassembled parts • 1 trip unit cover (Insulating tape) • 1 + 1 springs (Metal) • 1 magnetic slide (Plastic) • 2 trimmers (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 1 trip shaft (Plastic) • 2 pins (Metal) • 1 hook (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 6 screws (Metal) • 3 thermal and magnetic groups (Metal) • 3 plates (Metal) • 1 trip unit case (Plastic) 7. ENERGY CONSUMPTION FOR CIRCUIT BREAKERS DISASSEMBLY...
- 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.