Method of operating a protection device, associated computer program product, protection device and electrical installation
US-2016372916-A1 · Dec 22, 2016 · US
Motor protection system
US8941348B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8941348-B2 |
| Application number | US-201213718462-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 18, 2012 |
| Priority date | Dec 18, 2012 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
Official abstract text for this publication.
System and methods for protecting motors of a vehicle are provided. A system includes a current transformer device for each phase of the three-phase power received by each protected motor. Each current transformer device includes a switch that is normally in a first position and is configured to monitor an output current of fuse through which the power is transmitted, compare the output current to a threshold current level, and, when the output current is below the threshold current level, change the switch to a second position. The system also includes a processing circuit configured to control operation of the one or more motors of the vehicle. The processing circuit is configured to determine whether one or more of the switches of the plurality of current transformer devices is in the second position and, if so, activate a fault condition.
First claim
Opening claim text (preview).
What is claimed is: 1. A system for protecting one or more motors of a vehicle, the one or more motors configured to receive three-phase power from an alternator of the vehicle, wherein the vehicle includes a plurality of fuses, each fuse being provided between the alternator and one of the one or more motors of the vehicle for each phase of the three-phase power, the system comprising: a plurality of current transformer devices, the plurality of current transformer devices compri…
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Frequently asked questions
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- What does patent US8941348B2 cover?
- System and methods for protecting motors of a vehicle are provided. A system includes a current transformer device for each phase of the three-phase power received by each protected motor. Each current transformer device includes a switch that is normally in a first position and is configured to monitor an output current of fuse through which the power is transmitted, compare the output current…
- Who is the assignee on this patent?
- Caterpillar Global Mining Llc
- What technology area does this patent fall under?
- Primary CPC classification H02H3/083. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 27 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).