BUSSMANN
Effective March 2016
Supersedes December 2015
Technical Data 6002
SERIES
PT Medium voltage fuses for potential and
small power transformers
Features and benefits
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Low amp, current-limiting E-Rated PT
medium voltage fuses are general purpose
fuses defined by their melting time-current
characteristic that permit their electrical
interchangeability with other fuses of the
same E Rating.
•
E-Rated general purpose fuses must have
a current responsive element that will melt
in 300 seconds at an RMS current within
the range of 200% to 240% of the fuse’s
nameplate current rating, fuse refill, or link
per ANSI C37.46 for fuses rated 100E or less.
•
•
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PT fuses are physically dimensioned for easy
installation in existing hardware.
Space saving size eases design
considerations for new installations.
Current-limiting fuses provide positive
interruption even on low fault currents.
The fuse limits the magnitude of
electromechanical stresses in the protected
apparatus.
Description:
Bussmann® series Indicating and non-
•
indicating E-Rated, current-limiting, medium
voltage fuses for potential, small power and
control transformers.
•
These fuses are in a self-contained, non-
venting package for installation indoors or
outdoors in an enclosure.
Contents
•
•
Available in indicating and non-indicating
versions.
Description
Page
Open fuse indicator speeds troubleshooting
by providing a positive visual indication of
fuse operation.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.475kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.6kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
5.5kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 10-26
7.2kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 27-29
8.3kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 30-39
12kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 40-42
15.5kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . 43-52
17.5kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . 53-54
24kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 55-56
25.5kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . 57-60
36kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 61-62
38kV fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 63-69
Fuse mountings. . . . . . . . . . . . . . . . . . . . . . 70-71
Typical applications:
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Primary protection of:
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Medium voltage potential transformers
•
Small medium voltage service
transformers
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Small medium voltage control
transformers.