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<\/a><\/li><\/ul><\/div>Erica Castanho<\/a><\/span><\/span>2023-08-30T09:14:14-03:00<\/span>Nishi takes part in the 38th Brazilian Congress on Maintenance and Asset Management, exhibiting products, services and equipment<\/a><\/h4>
Erica Castanho<\/a><\/span><\/span>2023-08-30T09:14:14-03:00<\/span>30\/08\/2023<\/span>|<\/span>Comments Off on Nishi takes part in the 38th Brazilian Congress on Maintenance and Asset Management, exhibiting products, services and equipment<\/span><\/span><\/span><\/p>
Nishi will be present from September 26 to 28, 2023 in Curitiba-PR at the 38th Brazilian Congress of Maintenance and Asset Management, exhibiting products, services and equipment. EXPOMAN is the largest trade fair in the
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<\/a><\/li><\/ul><\/div>Erica Castanho<\/a><\/span><\/span>2023-04-27T10:37:54-03:00<\/span>FREE WEBINAR: Generator failure – Root Cause Analysis (RCA) of 2 generators with insulation breakdown<\/a><\/h4>
Erica Castanho<\/a><\/span><\/span>2023-04-27T10:37:54-03:00<\/span>27\/04\/2023<\/span>|<\/span>Comments Off on FREE WEBINAR: Generator failure – Root Cause Analysis (RCA) of 2 generators with insulation breakdown<\/span><\/span><\/span><\/p>
Nishi and Quartzelec would like to invite you to attend the on-line meeting where we will be discussing: Generator failure - Root Cause Analysis (RCA) of 2 generators with insulation breakdown. We will be discussing
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<\/a><\/li><\/ul><\/div>Erica Castanho<\/a><\/span><\/span>2023-01-24T08:36:57-03:00<\/span>Electrical Tests: Low Voltage Winding x Medium High Voltage<\/a><\/h4>
Erica Castanho<\/a><\/span><\/span>2023-01-24T08:36:57-03:00<\/span>24\/01\/2023<\/span>|<\/span>Comments Off on Electrical Tests: Low Voltage Winding x Medium High Voltage<\/span><\/span><\/span><\/p>
Nishi-san's tips on medium and high voltage motor and generator maintenance are back, now with live broadcasts and open participant Q&A. Watch and participate in this online event with lots of technical content and the
READ MORE<\/span><\/a> <\/p><\/div><\/article><\/section><\/div><\/div><\/div><\/div><\/div>Would you like to receive exclusive content about electrical machines?<\/p>\n<\/div>
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Corrective Maintenance<\/h3>\n<\/div>\nThese are cost-effective strategies for low-cost, easy-to-replace equipment that does not bring economic harm to the operation, safety, and the environment. Cost is the parameter for the decision to repair or replace the winding. In generators and motors it is necessary to evaluate the cause of the failure and the need to change the thermal class of the insulation or even the motor sizing. It is subject to constant and unexpected failures that can impact production uptime and costs.<\/p>\n<\/div><\/div><\/div>
![](\"https:\/\/nishi.com.br\/novo\/wp-content\/uploads\/2021\/06\/corretiva1.jpg\" "\\"corretiva1\\"")
<\/span><\/div><\/div><\/div><\/div><\/div>Rewinding alternating current generator<\/h4>\n\n- Equipment Disassembly;<\/li>\n
- Stator (rewinding);<\/li>\n
- Rotor (rewinding);<\/li>\n
- Inspection and mechanical services;<\/li>\n
- Replacement of parts and components;<\/li>\n
- Assembling the equipment.<\/li>\n<\/ul>\n
Rewinding caged AC motor<\/h4>\n\n- Disassembling the equipment;<\/li>\n
- Stator (rewinding);<\/li>\n
- Rotor Cage (rewinding);<\/li>\n
- Components and mechanical services;<\/li>\n
- Assembling the equipment.<\/li>\n<\/ul>\n
Balancing tunnel<\/h4>\n
Overspeed balancing offers the opportunity to optimize a rotor by simulating actual operating conditions, and to make necessary corrections before the rotor is installed. Balancing verifies the mechanical integrity of the rotor design over the speed range before the unit is installed and ensures proper rotor operation at rated speed.<\/p>\n
In-field rewinding:<\/h4>\n
In situations where it is not possible to move machines to the workshop, all work is performed in the field, where a mobile workshop structure is set up at our customers’ facilities, where the following are performed:<\/p>\n
\n- Disassembly and Assembly;- Complete rewinding of the stator and rotor;<\/li>\n
- Supply or remanufacture of rotor and stator cores;<\/li>\n
- Wedging;<\/li>\n
- Mechanical services in general;<\/li>\n
- Replacing or recovering shafts;<\/li>\n
- Electrical Tests and Tests for process monitoring;<\/li>\n
- Vibration Analysis and Balancing;<\/li>\n
- Partial Discharge Monitoring.<\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div>
These are cost-effective strategies for low-cost, easy-to-replace equipment that does not bring economic harm to the operation, safety, and the environment. Cost is the parameter for the decision to repair or replace the winding. In generators and motors it is necessary to evaluate the cause of the failure and the need to change the thermal class of the insulation or even the motor sizing. It is subject to constant and unexpected failures that can impact production uptime and costs.<\/p>\n<\/div><\/div><\/div>
<\/span><\/div><\/div><\/div><\/div><\/div>Rewinding alternating current generator<\/h4>\n\n- Equipment Disassembly;<\/li>\n
- Stator (rewinding);<\/li>\n
- Rotor (rewinding);<\/li>\n
- Inspection and mechanical services;<\/li>\n
- Replacement of parts and components;<\/li>\n
- Assembling the equipment.<\/li>\n<\/ul>\n
Rewinding caged AC motor<\/h4>\n\n- Disassembling the equipment;<\/li>\n
- Stator (rewinding);<\/li>\n
- Rotor Cage (rewinding);<\/li>\n
- Components and mechanical services;<\/li>\n
- Assembling the equipment.<\/li>\n<\/ul>\n
Balancing tunnel<\/h4>\n
Overspeed balancing offers the opportunity to optimize a rotor by simulating actual operating conditions, and to make necessary corrections before the rotor is installed. Balancing verifies the mechanical integrity of the rotor design over the speed range before the unit is installed and ensures proper rotor operation at rated speed.<\/p>\n
In-field rewinding:<\/h4>\n
In situations where it is not possible to move machines to the workshop, all work is performed in the field, where a mobile workshop structure is set up at our customers’ facilities, where the following are performed:<\/p>\n
\n- Disassembly and Assembly;- Complete rewinding of the stator and rotor;<\/li>\n
- Supply or remanufacture of rotor and stator cores;<\/li>\n
- Wedging;<\/li>\n
- Mechanical services in general;<\/li>\n
- Replacing or recovering shafts;<\/li>\n
- Electrical Tests and Tests for process monitoring;<\/li>\n
- Vibration Analysis and Balancing;<\/li>\n
- Partial Discharge Monitoring.<\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div>
Rewinding caged AC motor<\/h4>\n\n- Disassembling the equipment;<\/li>\n
- Stator (rewinding);<\/li>\n
- Rotor Cage (rewinding);<\/li>\n
- Components and mechanical services;<\/li>\n
- Assembling the equipment.<\/li>\n<\/ul>\n
Balancing tunnel<\/h4>\n
Overspeed balancing offers the opportunity to optimize a rotor by simulating actual operating conditions, and to make necessary corrections before the rotor is installed. Balancing verifies the mechanical integrity of the rotor design over the speed range before the unit is installed and ensures proper rotor operation at rated speed.<\/p>\n
In-field rewinding:<\/h4>\n
In situations where it is not possible to move machines to the workshop, all work is performed in the field, where a mobile workshop structure is set up at our customers’ facilities, where the following are performed:<\/p>\n
\n- Disassembly and Assembly;- Complete rewinding of the stator and rotor;<\/li>\n
- Supply or remanufacture of rotor and stator cores;<\/li>\n
- Wedging;<\/li>\n
- Mechanical services in general;<\/li>\n
- Replacing or recovering shafts;<\/li>\n
- Electrical Tests and Tests for process monitoring;<\/li>\n
- Vibration Analysis and Balancing;<\/li>\n
- Partial Discharge Monitoring.<\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div>
Balancing tunnel<\/h4>\n
Overspeed balancing offers the opportunity to optimize a rotor by simulating actual operating conditions, and to make necessary corrections before the rotor is installed. Balancing verifies the mechanical integrity of the rotor design over the speed range before the unit is installed and ensures proper rotor operation at rated speed.<\/p>\n
In-field rewinding:<\/h4>\n
In situations where it is not possible to move machines to the workshop, all work is performed in the field, where a mobile workshop structure is set up at our customers’ facilities, where the following are performed:<\/p>\n
- \n
- Disassembly and Assembly;- Complete rewinding of the stator and rotor;<\/li>\n
- Supply or remanufacture of rotor and stator cores;<\/li>\n
- Wedging;<\/li>\n
- Mechanical services in general;<\/li>\n
- Replacing or recovering shafts;<\/li>\n
- Electrical Tests and Tests for process monitoring;<\/li>\n
- Vibration Analysis and Balancing;<\/li>\n
- Partial Discharge Monitoring.<\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div>