ABB Sace Tmax XT XT5 THERMOMAGNETIC Montageanleitung

—

INSTRUCTION HANDBOOK

1SDH002298A1001 - ECN000285442

TMAX XT XT5 ELECTRONIC

Disassembly instructions

Disassembly instruction tmaX Xt Xt5 electronic

1. SCOPE

Scope of this document is to illustrate the step-by-step disassembly process of ABB SACE Tmax XT XT5

moulded case circuit breaker equipped with an electronic trip unit (type Ekip DIP LS/I).

Document is focused on Tmax XT XT5 3p IEC version, anyway it allows to cover other versions of Tmax

XT XT5 circuit breaker equipped with an electronic trip unit with just few slight differences to be taken

into account.

Gloves Glasses Safety shoes Protective clothes

4. TOOLS

Disassembly operations require the use of tools (e.g. screwdriver, torx key, pliers, …); tools to be used

are specified inside each phase of the disassembly process (see Chapter 6).

3. PERSONAL PROTECTIVE EQUIMENT (PPE)

When performing disassembly, following safety Personal Protective Equipment (PPE) must be worn:

2. SAFETY NOTES

Before proceeding with any disassembly operation, it’s mandatory to put the circuit breaker in open

position.

Disassembly operations of circuit breakers must be performed by qualified and skilled personnel in

the electrical field (IEV 195-04-01: person with relevant education and experience to enable him or her

to perceive risks and to avoid hazards which electricity can create) and having a detailed knowledge of

circuit breakers.

Disassembly activites must be performed in an ergonomic workspace able to ensure protection of per-

sons demanded to perform disassembly activities.

Applicable national legislation and international standards in force at the time of disassembly of circuit

breakers must be taken into account in addition to prescriptions illustrated in this document.

ABB declines any responsibility for injury to people or damage to property resulting from a failure to

comply with the instructions set out in this document and with any applicable safety standard.

INSTRUCTION HANDBOOK

If disassembled parts require a separate treatment a specific indication is provided inside each phase

with reason why for the separate treatment (see Chapter 6).

Description Position inside circuit breaker Quantity

Cap kits In correspondence of circuit breaker connection terminals 

UVR rod Mounted on the breaking part cover 

Test lever Mounted on the breaking part cover 

Left hand lever adapter Mounted on the breaking part cover 

RC lever release Mounted on the breaking part cover 

RC lever support Mounted on the breaking part cover 

Right hand op/cl AUX adapter Mounted on the breaking part cover 

Toggle extention Mounted on the toggle 

Toggle protection Mounted on the toggle 

Operating mechanism Mounted on the central pole 

Backplane Mounted on the trip unit 

RC lever Mounted on the trip unit 

Trip unit printed circuit board Mounted on the trip unit 

Trip coil Mounted on the trip unit 

Connector protection Mounted on the trip unit 

Sensors assemblies Mounted on the trip unit 

6. DISASSEMBLY PROCESS

Circuit breakers disassembly process is constituted by a sequence of operations to be performed on

products after their dismounting from original installation. For each phase following information are

provided:

 

 

 

 

 

applicable)

 

5. SEPARATE TREATMENT

Table below lists parts requiring a separate treatment adding information about part location inside

circuit breakers and related quantity.

Disassembly instruction tmaX Xt Xt5 electronic

Tools

Allen key

Flat screwdriver

6.1 PHASE 1 – CAP KITS

By means of the allen key remove the screws

connected with the cap kits.

Manually separate the cap kits and their nuts

from circuit breaker main structure.

Insert the flat screwdriver as shown in Picture

2 and unhook the cap kits from circuit breaker

main structure.

Actions to be performed

8mm

Disassembled parts

 

 

 

(Thermoplastics containing brominated

flame retardants)

INSTRUCTION HANDBOOK

Tools

Cross screwdriver

6.2 PHASE 2 – FRONTAL

Manually close the circuit breaker and by

means of the cross screwdriver push the test

button in order to bring the circuit breaker in

trip position.

Manually remove the aesthetic front cover.

By means of the cross screwdriver unscrew the

4 screws fixing the front cover to the circuit

breaker main structure.

Insert the flat screwdriver as shown in the

picture and slightly push the screwdriver as

shown by the arrow in order to raise up and to

unhook the aesthetic front cover from circuit

breaker main structure.

Actions to be performed

Flat screwdriverFlat screwdriver

Disassembly instruction tmaX Xt Xt5 electronic

Manually remove the front cover.

 

 

 

Disassembled parts

INSTRUCTION HANDBOOK

6.3 PHASE 3 – TRIP UNIT

By means of the torx key unscrew the 3 screws

fixing the trip unit to the breaking part.

Manually remove the trip unit from the

breaking part.

By means of the allen key unscrew the 4 screws

located in the bottom part of the circuit

breaker fixing the trip unit to the breaking

part.

Actions to be performed

Tools

Disassembled parts

 

 

Electronic components) *

Allen key

3mm

Torx key

No. 30

*Trip unit will be furtherly disassembled (see Phases 6.7 and 6.8)

Disassembly instruction tmaX Xt Xt5 electronic

6.4 PHASE 4 – BREAKING PART COVER

By means of the cutter start removing the

label on the left side of the breaking part and

manually complete the operation.

Manually remove the breaking part cover from

the breaking part main structure.

By means of the cross screwdriver unscrew

the 8 screws fixing the breaking part cover to

breaking part main structure.

By means of the pliers remove the 2 nuts

mounted on the breaking part cover.

Actions to be performed

Tools

Cross screwdriver

Pliers

Flat screwdriver

Cutter

INSTRUCTION HANDBOOK

By means of the flat screwdriver turn the test

lever until it comes out from its housing.

Manually remove the trip test button and

separate the spring from test lever.



mounted on the breaking part cover.



rod.

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