high voltage ballast protection. 2 confidential and proprietary to littelfuse, inc. © 2006...
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![Page 1: High voltage Ballast protection. 2 Confidential and Proprietary to Littelfuse, Inc. © 2006 Littelfuse, Inc. All rights reserved. Electronic Ballast for](https://reader034.vdocuments.us/reader034/viewer/2022051115/5697bfc41a28abf838ca615f/html5/thumbnails/1.jpg)
High voltage Ballast protection
![Page 2: High voltage Ballast protection. 2 Confidential and Proprietary to Littelfuse, Inc. © 2006 Littelfuse, Inc. All rights reserved. Electronic Ballast for](https://reader034.vdocuments.us/reader034/viewer/2022051115/5697bfc41a28abf838ca615f/html5/thumbnails/2.jpg)
2Confidential and Proprietary to Littelfuse, Inc. © 2006 Littelfuse, Inc. All rights reserved.
Electronic Ballast for Fluorescent LightingFluorescent-Lamp Ballast UL935
Primary Voltage Rating of Ballast:
477 series
477 series
![Page 3: High voltage Ballast protection. 2 Confidential and Proprietary to Littelfuse, Inc. © 2006 Littelfuse, Inc. All rights reserved. Electronic Ballast for](https://reader034.vdocuments.us/reader034/viewer/2022051115/5697bfc41a28abf838ca615f/html5/thumbnails/3.jpg)
3Confidential and Proprietary to Littelfuse, Inc. © 2006 Littelfuse, Inc. All rights reserved.
Electronic Ballast for Fluorescent Lighting477series (500Vac/600Vac-rated)
Littelfuse designed solution for 600Vac Ballast
• 600Vac-rated fuse (up to 5A
inclusive)
o 500Vac-rated for ratings above 6.3A
• 5X20mm size
• Both IEC and UL agency approvals
![Page 4: High voltage Ballast protection. 2 Confidential and Proprietary to Littelfuse, Inc. © 2006 Littelfuse, Inc. All rights reserved. Electronic Ballast for](https://reader034.vdocuments.us/reader034/viewer/2022051115/5697bfc41a28abf838ca615f/html5/thumbnails/4.jpg)
4Confidential and Proprietary to Littelfuse, Inc. © 2006 Littelfuse, Inc. All rights reserved.
Electronic Ballast for Fluorescent Lighting477series 600Vac
Application 1:600Vac Primary Protection for Ballast
Problem:• The highest primary voltage rating of
ballast is 440Vac to 600Vac, which request the protection device fuse’s
voltage rating to be 600Vac.
New solution:477series (600Vac
Parameter)