MV Fuses
ABB PTMV Poland
2003
ABB PTMV Division
Factory in Przasnysz
HV fuses
HV Current Limiting Fuses
1) Backup fuses
Fuses capable of breaking, under specified conditions of use and behavior, all currents
from the rated maximum breaking current down to the rated minimum breaking
current.
Suitable for application in switch/fuse combinations.
2) General purpose fuse
Fuses capable of breaking, under specified conditions of use and behavior, all currents
from the rated maximum breaking current down to the current that causes melting
of the fuse element in 1 hour or more.
ABB PTMV Poland
3) Full range fuse
Fuses capable of breaking, under specified conditions of use and behavior, all currents
that causes melting of the fuse element (s) up to its rated maximum breaking current.
HV fuses
HV NonCurrent Limiting Fuses
1Expulsion fuses
Outdoor fuses for protection of overhead lines and distribution transformers. They
comprise a tin or copper fuse element in series with a flexible braid in a tube.
ABB PTMV Poland
2) Liquid fuses
Based on early noncurrent limiting fuses that use liquids ( mostly hydrocarbon)
to quench the arc.
MV fuses –where&what we have?
MV fuses portfolio
 GFFF for HV fuses :Poland/Przasnysz
 DIN and BS standard fuses (backup
and motor protection)
 VT fuses
 DC fuses
 Gasexpulsion fuses manufacturers:
USA and Australia
 More info: Visit Fuses page on
ABB PTMV Poland
www.abb.com/mediumvoltage
MV fuses –VT fuses
MV fuses portfolio
VT fuses
 VT protection can utilize Backup fuses or special VT
fuses depending on VT’s design.
 ABB produces and recommends to use special VT
fuses.
 VT Competitors use Backup fuses (2 A and higher
ABB PTMV Poland
ratings) or special types VT fuses
MV fuses –DC fuses
MV fuses portfolio
DC fuses
 There are few dimensional standards depend on
tradition on the markets.
 ABB types DC fuses exist on following markets: Poland,
Czech, Slovakia, Croatia, Hungary.
 There are Italian types Italian Railway special
requirements – ABB is one of main suppliers
 There is a big DC fuse market semiconductors
ABB PTMV Poland
protection main suppliers Bussmann, Ferraz
Fuses in ABB General Presentation
MV fuses portfolio
MV DIN HRC fuses
Backup fuses
Competitors offer
ABB offer
3,6 7,2 kV
(6,3 200A), 192, 292, 442 mm
(6 100A) 192 mm, (6 200A) 292 mm
6 12 kV
(6,3 200A), 192, 292, 442, 537 mm
(6 100A) 292 mm, (6 200A) 442 mm
10 17,5 kV
(6,3 200A), 292, 367, 442 mm
(6 63A) 292, 367, 442 mm,
(80 125A) 442 mm
10 24 kV
ABB PTMV Poland
(6,3 200A), 292, 442, 537 mm
(6 125A) 442 mm, (80 125A) 537 mm
20 36 kV
(6,3 63A), 537 mm
(6,3 40A), 537 mm
MV fuses – some pictures
FUSES
Indoor /Outdoor
Indoor
CEF
CMF
ABB PTMV Poland
WBP / BRT
WBT/BWT
Product Overview Fuses
type CEF
High Rupturing Capacity Fuses
Features:







ABB PTMV Poland

High rupturing capacity
Indoor/Outdoor
Low minimum breaking current
Low power losses /suitable in compact switchgear
Low arcvoltage
High breaking capacity
High current limitation
Dimensions acc.to DIN/IEC & BS Standards
rated voltage 3,6 36 kV
rated current 6,3 200 A
Fuses
type WBP / BRT
Fuses for Voltage Transformers
Features:

Unlimited breaking capacity
 Shortcircuit current limiting
 Small dimensions
 Intended for protection of circuits
powered by voltage transformer
 Intended for ABB voltage transformers
Type WBP Indoor design.
Rated voltages 7.2, 12, 24, 36 kV.
Rated current 0,4 0,8 A.
ABB PTMV Poland
Type BRT Outdoor design.
Rated voltages 7.2; 12; 17.5; 24; 36 kV.
Rated current 0,8 A.
Fuses
type CMF
Fuses for MOTOR circuit applications
Features:






High voltage current limiting
Low power losses
Low minimum breaking current
High breaking capacity
Short circuit current limitation
Dimensions acc.to DIN/IEC & BS Standards
ABB PTMV Poland
rated voltage 3,6 12 kV
rated current 63 315 A
Fuses
type WBT / BWT
Fuses for RAILWAY TRACTION
Features:


High rupturing capacity
Short circuit current limiting
 Low switching voltages
Type: WBT...,
Nominal voltage 1.5 4 kV DC.
Nominal current In 0,6 100 A
Breaking current up to 50kA
Type: BWT
ABB PTMV Poland
Rated voltage Un 3 kV DC
Rated current In 3.15 250 A
Minimum breaking current Imin 4 x In
‘Specifica Generale per la Fornitura di Valvole Fusibili A.T. per Circuiti C.C’.
Trenitalia (Italian Railways)
Fuses
type CEF/CMF
ABB PTMV Poland
Automated Production Line of ABB fuse link
Accessories
CEF fuse clips
CEF test fuse link 3,6 – 36 kV
ABB PTMV Poland
Operating tong for fuse link CEF 3,6 – 36 kV
ABB PTMV Poland
Accessories
Fuses
ABB PTMV Poland
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ABB PTMV Poland
Fuses
type CEF/CMF
HV fuses – normal operating conditions
ABB PTMV Poland
•Maximum ambient temperature +400C
•Minimum ambient temperature is 250C
•The altitude does not exceed 1000m (3300ft)
•The ambient air is not excessively polluted by dust, smoke,
corrosive or flammable gases, vapour or salt
•Vibrations due to causes external to fuses or earth tremors are
negligible
•Typical condition of humidity for indoor installations are fulfilled
HV fuses – Standards
ABB PTMV Poland
•IEC 602821 High Voltage Fuses
•IEC 60549 High Voltage Fuses for external protection of shunt
Power capacitor
•IEC 60644 Specification for high voltage fuse links for motor
circuit applications
•IEC 60787 Application guide for selection of fuse links of high
voltage fuses for transformers circuit applications
ABB PTMV Poland
HV fuses – design
ABB PTMV Poland
HV fuses – general rules
HV fuses – Fuse parameters
ABB PTMV Poland
Striker’s types
HV fuses – Fuse parameters
ABB PTMV Poland
Dimensions
HV fuses – Fuse parameters
Nameplate
ABB PTMV Poland
Fuse types:
CEF:
indoor
CEFBS: with tags
CEFU: outdoor
CMF:
motor
CMFBS: with tags
HV fuses – Fuse parameters
ABB PTMV Poland
Nameplate
HV fuses – Fuse parameters
ABB PTMV Poland
Nameplate
ABB PTMV Poland
HV fuses – Graphic definition of currents
HV fuses – Fuse parameters
ABB PTMV Poland
Data and dimensions
HV fuses – application above 1000m above sea level
Altitude correction factors for Test and Rating Voltages
ABB PTMV Poland
Altitude correction factors for Rated Current and Temperature Rise
ABB PTMV Poland
HV fuses – Fuse operation
ABB PTMV Poland
HV fuses – general rules
ABB PTMV Poland
HV fuses – Graphic definition of currents
HV fuses – Fuse parameters
Switching voltages limits
As shown on the previous chart the fuse must generate an arc
voltage which exceeds the operating voltage. That means when the
operating voltage increase, a fuse which will generate a sufficient
arc voltage must be chosen. Practically this is done by increasing
the length of each fuse element. As shown in fig. 5 under short
circuit conditions the arc voltage will start in all notches
simultaneously and spread from the starting points against
neighboring notches. The total arc voltage is a function of the arc
length. Increasing arc length gives a higher arc voltage.
ABB PTMV Poland
The switching voltage generated by CEF fuses are below these
limits and a CEF fuse can safely be used if the system voltage is 50
100% of rated fuse link voltage.
HV fuses – Fuse parameters
ABB PTMV Poland
Switching voltages limits
HV fuses – general rules
ABB PTMV Poland
Selection of rated current of fuses
HV fuses – general rules
ABB PTMV Poland
Selection of rated current of fuses
HV fuses – general rules
ABB PTMV Poland
Minimum breaking current
HV fuses – general rules
ABB PTMV Poland
Minimum breaking current
HV fuses – general rules
ABB PTMV Poland
Timecurrent characteristic
ABB PTMV Poland
HV fuses – general rules
TIME CURRENT CHARACTERISTIC.
The time current characteristic curves for CEF fuses are shown in NHP
300547. The characteristic are valid for all voltage classes of CEF fuses.
The curves are given as medium characteristic curves. They show the
melting time in relation to the prospective current causing the fuse
elements to melt.
The curves have a tolerance of +/10% in the current direction.
The total operating time for the fuse will be the melting time plus the arcing
time from the fuse elements melt until the current is interrupted.
For selectivity analysis the interesting curves will be:
The minimum melting current characteristic and
The total clearing time/current characteristic.
Minimum melting characteristic shows the melting characteristic with 0.0%
tolerance. That means the minimum prospective current values that can
melt the fuse.
Total clearing time characteristic shows the maximum melting plus the
maximum arcing time for the fuse with tolerance +0.0%.
That means: The range between these two curves is the operating area for
the actual fuse. In order to get selectivity downstream protection devices
must clear a fault before we get an intersection with the minimum melting
time curve, and higher order protection devices must not give an
intersection with the total clearing time / current characteristic.
ABB PTMV Poland
HV fuses – general rules
ABB PTMV Poland
HV fuses – minimum melting characteristic
ABB PTMV Poland
HV fuses – total clearing characteristic
ABB PTMV Poland
HV fuses – general rules
ABB PTMV Poland
HV fuses – general rules
ABB PTMV Poland
HV fuses – general rules
HV fuses – Resistance and I t values for CEF
ABB PTMV Poland
2
ABB PTMV Poland
HV fuses – Cut off current
HV fuses – Cut off current
CURRENT LIMITATION
The effective current limitation can be taken from the
curve in
NHP 300548. The maximum value of the current which is
let through by the fuse depends on the fuse rated current
and the prospective current. NHP 300548 shows the
peak let through current with Is = Ip*√2*X with X = 1.8.
ABB PTMV Poland
Example:
CEF 12kV 63A
Ip = 7 kA (r.m.s.)
The Is value is now found as the intersection between the
vertical line starting at 3 kA on the xaxis and the
corresponding curve for 63A
at:
Is = 5 kA (Peak value).
HV fuses – general rules
ABB PTMV Poland
Rated voltage selection
ABB PTMV Poland
HV fuses – Capacitor bank protection
ABB PTMV Poland
HV fuses – Capacitor bank protection
ABB PTMV Poland
HV fuses – Transformer protection
ABB PTMV Poland
HV fuses – Transformer protection
ABB PTMV Poland
HV fuses – Transformer protection
ABB PTMV Poland
HV fuses – general rules
ABB PTMV Poland
HV fuses – Transformer protection
ABB PTMV Poland
HV fuses – Transformer protection
ABB PTMV Poland
HV fuses – Transformer protection
ABB PTMV Poland
HV fuses – for use in compact switchgear
ABB PTMV Poland
HV fuses – for use in compact switchgear
ABB PTMV Poland
HV fuses – for use in compact switchgear
ABB PTMV Poland
HV fuses – Motor protection
ABB PTMV Poland
HV fuses – Motor protection
ABB PTMV Poland
HV fuses – Coordination current limiting fuses/cutouts
ABB PTMV Poland
HV fuses – Your questions
ABB
PTMVPoland
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