You can define the optimal maintenance strategy according to criticality of your application by combining four maintenance practices:
oCorrective maintenance
oPreventive maintenance
oOn-site condition maintenance
oPredictive maintenance (condition-based maintenance)
Corrective maintenance:
oIs carried out after fault recognition.
oIs intended to put an item into a state in which it can perform a required function.
Corrective maintenance is recommended only for non-critical applications that have minimal impact in business operations.
Preventive maintenance:
oIs carried out in either of the following cases:
oAt predetermined frequency in accordance with established time intervals or number of units of use but without previous condition investigation.
NOTE: The time intervals or number of units of use may be established from knowledge of the failure mechanisms of the item.
oAccording to prescribed criteria.
oIs intended to reduce the probability of failure or the degradation of the functioning of an item.
Preventive maintenance is recommended for user applications with low to high criticality.
Preventive maintenance includes three programs:
oMaintenance program that can be performed by the end user:
oBasic end-user maintenance program
oStandard end-user maintenance program
oMaintenance program that can be performed by Schneider Electric Services:
oManufacturer maintenance program
On-Site condition maintenance is a Schneider Electric maintenance offer that includes the inspection and/or testing (scheduled on request or planned), the analysis, and the resulting maintenance actions.
On-site condition maintenance programs enhance Manufacturer maintenance with the following:
oThe OnSite Condition Essential program is recommended for devices in a user application with moderate criticality. It includes ProDiag Trip Unit diagnostic.
oThe OnSite Condition Advanced program is recommended for devices in a user application with high criticality. It includes the following diagnostics:
oProDiag Trip Unit
oProDiag Breaker
oProDiag Clusters for drawout Masterpact MTZ devices
Contact your Schneider Electric field service representative for more information.
Predictive Maintenance (Condition-Based Maintenance)
Predictive maintenance is condition-based maintenance carried out following a forecast derived from repeated analysis or known characteristics and evaluation of the significant parameters of the degradation of the item.
A Schneider Electric service bureau assesses data on behalf of the end user to validate and trigger maintenance work orders, and schedule ensuing on-site maintenance.
Contact your Schneider Electric field service representative for more information.
EcoStruxure™ Facility Expert optimizes operations and maintenance, helping to ensure business continuity, and provides insights to service providers or facility managers.
EcoStruxure Facility Expert is a real-time collaborative technology available on mobile devices and PCs that enables managers and maintenance personnel to be connected with facilities and equipment. Information exchange between users is simple and fast.
The QR code on Masterpact MTZ devices enables managers and maintenance personnel to access the following automatic downloads through EcoStruxure Facility Expert:
oThe Masterpact MTZ device identifier.
oTechnical documentation.
oThe maintenance plan for the Masterpact MTZ device.
EcoStruxure Facility Expert helps maintenance personnel to diagnose issues remotely and manage maintenance efficiently by:
oProviding relevant information on critical assets.
oSending immediate state of the equipment and detailed information for diagnostics.
Defining Your Maintenance Plan
Low voltage circuit breakers, for example Masterpact MTZ circuit breakers, in a power distribution infrastructure play a critical role in helping to protect the equipment and activity against cable overloads, short-circuits, and insulation faults, helping to ensure safety, reliability, security, and sustainability.
If you are a plant manager, maintenance manager, facility manager, or safety manager, you are responsible for helping to ensure your power distribution infrastructure with Masterpact MTZ devices works in optimum conditions throughout its life cycle.
To achieve the necessary level of protection you need to have a maintenance plan to maintain each Masterpact MTZ device (system and parts) in a satisfactory operational state for its useful service life, and you must ensure that the plan is carried out.
This guide provides you with the insights necessary to build your own Masterpact MTZ maintenance plan, tailored to your device operating conditions (determined by the level of external stress of your device), and the environmental conditions impacting the aging and performance of your Masterpact MTZ device, and the criticality of the application.
Schneider Electric recommends that you build your Masterpact MTZ maintenance plan according to:
oThe required preventive maintenance programs:
oBasic end-user maintenance program
oStandard end-user maintenance program
oManufacturer maintenance program
oThe frequency of each maintenance program, defined by:
oThe environmental conditions and device operating conditions:
– Normal
– Severe
oThe criticality of the user application:
– Low
– Moderate
– High
The following example is a preventive maintenance plan for three Masterpact MTZ devices operating under different conditions in the facility.
The maintenance plan is based on the following parameters:
oNumber and types of maintenance programs: apply the three preventive maintenance programs recommended by Schneider Electric:
oBasic end-user maintenance program
oStandard end-user maintenance program
oManufacturer maintenance program
oFrequency for each maintenance program: determined according to the following:
oEnvironmental and operating conditions
oCriticality of the user application
|
Criteria |
Masterpact MTZ device no. 1 |
Masterpact MTZ device no. 2 |
Masterpact MTZ device no. 3 |
|---|---|---|---|
|
Temperature |
30 °C (86 °F) |
25 °C (77 °F) |
30 °C (86 °F) |
|
Percent load (I/In) |
67% |
48% |
85% |
|
Relative humidity |
75% |
85% |
70% |
|
Corrosivity |
Urban zones, scattered industrial activity, and heavy traffic |
||
|
Salt environment |
No salt mist |
No salt mist |
No salt mist |
|
Dust |
Moderate level |
High level |
Low level |
|
Vibration |
None |
None |
None |
|
Environmental and operating conditions |
Normal |
Severe |
Severe |
|
Criticality of the user application |
Low |
Moderate |
High |
|
Maintenance program frequency |
|||
|
Basic end-user maintenance program |
Every year |
Every year |
Every year |
|
Standard end-user maintenance program |
Every 2 years |
Every 2 years |
Every 2 years |
|
Manufacturer maintenance program |
Every 5 years |
Every 3 years |
Every 2 years |
|
Diagnostic services (ProDiag programs) |
Contact your Schneider Electric field service representative to plan maintenance operations. |
||
Based on the data above, the recommended maintenance plan for the three Masterpact MTZ devices is as follows:
oMaintenance plan for Masterpact MTZ no. 1 device, operating in normal operating conditions and with user application with low criticality:
|
Maintenance plan |
Year 1 |
Year 2 |
Year 3 |
Year 4 |
Year 5 |
Year 6 |
Year 7 |
Year 8 |
Year 9 |
Year 10 |
Year 11 |
Year 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Basic end-user maintenance program |
✔ |
– |
✔ |
– |
– |
✔ |
– |
✔ |
– |
– |
✔ |
– |
|
Standard end-user maintenance program |
– |
✔ |
– |
✔ |
– |
– |
✔ |
– |
✔ |
– |
– |
✔ |
|
Manufacturer maintenance program |
– |
– |
– |
– |
✔ |
– |
– |
– |
– |
✔ |
– |
– |
|
Diagnostic services (ProDiag programs) |
Contact your Schneider Electric field service representative to plan maintenance operations. |
|||||||||||
oMaintenance plan for Masterpact MTZ no. 2 device, operating in severe operating conditions and with user application with moderate criticality:
|
Maintenance plan |
Year 1 |
Year 2 |
Year 3 |
Year 4 |
Year 5 |
Year 6 |
Year 7 |
Year 8 |
Year 9 |
Year 10 |
Year 11 |
Year 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Basic end-user maintenance program |
✔ |
– |
– |
✔ |
– |
– |
✔ |
– |
– |
✔ |
– |
– |
|
Standard end-user maintenance program |
– |
✔ |
– |
– |
✔ |
– |
– |
✔ |
– |
– |
✔ |
– |
|
Manufacturer maintenance program |
– |
– |
✔ |
– |
– |
✔ |
– |
– |
✔ |
– |
– |
✔ |
|
Diagnostic services (ProDiag programs) |
Contact your Schneider Electric field service representative to plan maintenance operations. |
|||||||||||
oMaintenance plan for Masterpact MTZ no. 3 device, operating in severe operating conditions and with user application with high criticality:
|
Maintenance plan |
Year 1 |
Year 2 |
Year 3 |
Year 4 |
Year 5 |
Year 6 |
Year 7 |
Year 8 |
Year 9 |
Year 10 |
Year 11 |
Year 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Basic end-user maintenance program |
✔ |
– |
✔ |
– |
✔ |
– |
✔ |
– |
✔ |
– |
✔ |
– |
|
Standard end-user maintenance program |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
|
Manufacturer maintenance program |
– |
✔ |
– |
✔ |
– |
✔ |
– |
✔ |
– |
✔ |
– |
✔ |
|
Diagnostic services (ProDiag programs) |
Contact your Schneider Electric field service representative to plan maintenance operations. |
|||||||||||
