IEEE C37.48-2005 pdf free

IEEE C37.48-2005 pdf free.IEEE Guide for the Application, Operation, and Maintenance of High-Voltage Fuses, Distribution Enclosed Single-Pole Air Switches, Fuse Disconnecting Switches, and Accessories.
The distribUtion class and power class expulsion-type fuses listed in 1,1 are similar to those now covered in IEC 60282-2, The distribution class expulsion-type fuses are similar to the class “A” fuses covered in the IEC document and the power class fuses are similar to their class “13” fuses. At present. IEEE and ANSI standards do not cover the class “C” fuses listed in the IEC standard. Some of the current-limiting type fuses listed in 1.1 are similar to those now covered in IEC 60282-I. however, significant differences exist in the testing requirements of IEC and IEEE/ANSI. IEEE fuse standard% reflect, primarily, applications common in North America. and in countries that use electrical systems designed using similar principles. IEC standards tend to rely heavily on practices common in Europe. Since IEC testing differences include testing at different voltages for the same fuse rated voltage, and difl’erent or no testing for fuses intended for use in a surrounding temperature above 40 rC, the user is advised to exercise extreme caution if devices specified and tested per IEC standards are compared o those specified and tested per IEEE/ANSI standards. The differences in test requirements may result in devices tested to IEC not being suitable for applications where devices tested to IEEE and ANSI standards are required. or vice versa,
In the headings and the text of this document there will be some areas where information is included in brackeis [1. The information in the brackets is a term used in IEC standards that may he similar to the term used in this document, a term that is common in some parts of the world, or a term Lhat has been used previously in IEEE or ANSI standards. Caution is again advised when making comparisons.
1.3 Description of fuse-enclosure packages (FEPs) using expulsion-type indoor power class fuses
— Type IE: A fuse mounted in an enclosure with relatively free air circulation within the enclosure (for example, an expulsion fuse mounted in an enclosure or in a vault)
— Type 2E: A fuse mounted in a container with restricted air flow surrounding the fuse. hut relatively free air circulation within the enclosure on the outside of the container (for example, an expulsion fuse in an enclosure with insulating harriers that ftrm a container that restricts (he airflow)
— Type 3E: A fuse mounted in an enclosure, directly immersed in liquid, with relatively free liquid circulating around the fuse (for example, an expulsion fuse in a swächgear enclosure)
1.4 Description of FEPs using current-limiting type Indoor distribution and power class fuses
— l’vpe IC’: A fuse mounted in an enclosure wih relatively free air circulation within the enclosure (for example, a fuse mounted in a live front pad mounted transformer or in a vault)
— Type 2C: A fuse mounted in a container with restricted air flow surrounding the fuse, but with relatively free air cireulalion within the enclosure on the outside surfaces of the container (for example, a fuse inside a canister in a vault).IEEE C37.48 pdf free download.