Fuses for semiconductor protection
Transcript of Fuses for semiconductor protection
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Fuses for Fuses for semiconductorsemiconductor protectionprotection
Prepared by: Brane Lebarproduct manager assistant
20020088
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uick1. Market situation2. What is Ultra Quick?3. Reason for useing protection of semiconductors4. Danger of semiconductor explosion5. Difference between gG and aR/gR fuse
6. What we can protect with UQ ?-Thyristor, diode protection-IGBT protection-Battery, DC applications
7. Full protection of thyristor-Overload and s.c. protection of thyristor-When aR, when gR characteristics
8. Typical electrical characteristics-Short circuit simulation-I/t characteristics for gR, gG, aM-Selectivity-Thermal dissipation
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uick9. Selecting UQ fuse
-Voltage selection-Current selection-Joule integral selection-Ultra Quick select.xls
10. ETI UQ program (catalogue overview)-Type of fuses-Fuse bases and microswitches
11. Bussiness segment-Key words-Producers-Typical plants-Future application-Motor control market
12. Comparison characteristics ETI-competitors
13. World standards
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-UQ application guide-UQ industry applications-help for sales-Cross-reference-OEM references-Link to other documents
For presentation you need Power point 2003!
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Market situation
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One of the fastestgrowing market for fuses
is protection ofsemiconductor devices
!!!
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uickIn today’s industryavoiding “down-time” can be
the same as creatingprofit !!!
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uickWhat is ULTRA QUICK?
ULTRA QUICK (UQ) is a trade mark™ for the ETI program of fuses for protection of semiconductors andapplications with semiconductors
D2
DIODE_VIRTUAL
D32N5444
Q1IRG4BC40U
D42N1599
DIODE (1950)
Thyristor (1956),
GTO thyristor,
TRIAC
IGBT transistor(1985)
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Ultra Q
uickReason for useing protection ofsemiconductors:
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? ? ?
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5-6xIn(10ms) - UQ fuse has blown
>10xIn (10ms) break downof semiconductors
15-30xIn(10ms) -ordinary industrialfuse has blown
safety
10ms
50Hz
In
Danger of semiconductor explosion :
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Difference between UQ fuse and standard gG industrial fuse?
Joule integral
Power dissipation
Material of body
Melting element
Sand filler
Type ofprotection
Ultra Quick fuse (aR/gR) Industrial fuse (gG)
Low High
Higher Low
Steatit (610) Ceramics
Pure silver strip(smaller) Copper strip
Quarz + glass water(complicated process) Quarz
Short circuit(aR)
Full(overload + short circuit)
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What we can protectwith UQ
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10
100
1.000
10.000
100.000
1.000.000
10.000.000
0 200 400 600 800 1.000 1.200 1.400
thyristor
fuse- link
In (A)
I2t (A2s)
Nominal current for fuse-link and thyristor
MAX.Nominal current of
fuse- link
In (A)
F1
T1
Forbidden zone (overload zone of fuse -link)
Danger to run fuse-link under overload condition
Bigger current selection results bigger joule integral.
Thyristor may not be protected.
aR/gR
(aR)
if Isem=In
Choose whenyou haveinrush current2-3 times In
1.Thyristorprotection:
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2.IGBT protection:•Main purpose is to protect IGBT against explosion-ruptured (I2t of IGBT is too small to adequate protect by fuse for semiconductor protection !!! •Type 1 protection!!!
Sample:•Ic=200A•Icp (1ms)=400A•I2t (IGBT)=(400A)2 x 0,001s=160A2s•I2t (fast fuse 200A)=15.000-20.000A2s
Combination of electronic protectionand fuse for semiconductor protectionfor the middle and high power sistems.
Danger: electronic protectiondegradated over the time becauseovervoltage!!!
Electronic protection
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ltra Quick
without fuse (IGBT rupture)
with fuse
0
2
4
6
8X 10.000
I2t (
A2s
)
time
Save factor 4,3
Test: IGBT 400A/1200V, Fuse 200A/690V
IGBT protection by fuse for semiconductorprotection against ruptured (Type 1 protection) :
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3.Battery protection (Un >60V d.c.):Fault currents are usually only limited by the internal impendance ofthe battery. The internal impendance of the battery will vary with thestate of charge of the battery. If the battery is in a part dischargedcondition there will not be sufficient current available to operate a fuselink. Ultra Quick fuse – links are often used to protect batteries, as they limit the peak current to lower values than other fuse type andthis will better protect the battery from damage.
Reason for useing ultra quick for batteryprotection are:-phisicaly smaller than gG fuses-faster-more limit the peak current
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Full protection ofthyristor
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Ultra Q
uickCharacteristics - when is gR or aR• Overloads + short circuit gR (1,1 x In up to breaking capacity)• Short-circuit aR ( 1,6 x In up to breaking capacity)
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uickWrong s.c. protection of thyristorswith gG (must be aR or gR):
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Typical electricalcharacteristics
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uickI/t characteristics gR, gG, aM:
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Thermal distribution
∫∫∫∫∫∫∫∫∫ ⋅−∂∂
= dVgradTdivdVtTcdVj )(
2λρ
σ
(1)where:T means the temperature of element [ºC];j – current density [A/m2];σ – electrical conductivity [1/Ωm];ρ – material density [kg/m3];c – specific heat [J/kgºC];λ – thermal conductivity [W/mºC].
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Selecting UQ fuse
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power dissipation offuse link
total joule integral ofUQ fuse-link
joule integral ofsemiconductor
In Un
Size
What we must know for selecting UQ fuse link?
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• Voltage rating:choose the maximum voltagethe fuse is likely exposed to
• The operation voltage must not exeed therated voltage of fuse
• The rated voltage for AC and DC are different
Fuse selection criteria (Un)
DC-L/R
05
101520253035404550556065707580859095
100
200 250 300 350 400 450 500
Voltage (V)
L/R (ms) Depends of type and
nominal voltage
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• Smaller current selection –problem to run under overload condition (forbidden dashedsection (aR) of the melt curve).
• Bigger current selection - more fault let-through energy (joule integral). Thesemiconductor may not be protected.
Fuse selection criteria (In)
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• Ambient temperature• Forced cooling• Terminal conductor• Frequency• Current variation
Additional influenced factors (In)
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Ambient temperature A1
Ambient temperature A1
0,6
0,70,8
0,91
1,11,2
1,31,4
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80
A1
D0,D,BS,CH
NV
)( Coϑ
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Forced cooling B1
Forced cooling B1
1
1,05
1,1
1,15
1,2
1,25
1,3
0 1 2 3 4 5 6 7 8
air speed m/s
B1
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Terminal conductor C1
In the real world, the fuse may be used with cable bus sizes which are smaller than those used in the standard type test conducted in the lab.C1 varies with fuse design configuration and is;typically in the range 0,8 to 1
Thermal connection factor C1
0,8
0,82
0,84
0,86
0,88
0,9
0,92
0,94
0,96
0,98
1
50% 60% 70% 80% 90% 100%
100% equals 1,3A/mm2
C1
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Frequency correction factor C2
Frequency correction factor C2
0,5
0,6
0,7
0,8
0,9
1
1,1
0 100 500 1.500 5.000 10.000 20.000
f(Hz)
C2
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Current variation A2
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Combining the factors
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Example:
What could be MAX. nominal current in circuit forselected fuse-link?
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Fuse selection criteria Joule integral
I²t fuse < I²t sem
typical 1:1,5Why? The reason is tolerances in Joules integral of fuse link and
semiconductors (-+10%) and additional safety (10%)
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Joule integralJoule integral
1 1,5:
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10
100
1.000
10.000
100.000
1.000.000
10.000.000
0 200 400 600 800 1.000 1.200 1.400
thyristor
fuse-link
In (A)
I2t (A2s)
Nominal current MAX.Nominal current of
fuse-link
In (A)
F1
T1
f (cosφ, Un)
aR/gR
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uickComparison I2t/Ip for fuse aR/gR and gL/gG, circuit
breaker and thyristor for the same amp. rating
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Let through energy-joule integral:
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Ultra Q
uickDon’t worry!!!
solution is
Ultra Quick select.xls
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D0
BS
U/U-N
D
CHUQ01 UQ1
UQ2
NV/NH
New
UQ02
ETI UQ program (catalogue):
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ETI UQ program in two dimensions
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Fuses for semiconductorFuses for semiconductorprotectionprotection
NH
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Fuses for semiconductorFuses for semiconductorprotectionprotection
NHNH dimensionsdimensions
Type MSizes 000, 00, 1, 2, 3
Knife contacts according to DIN43620 and VDE 0636-201 andIEC60269-2-1
With top flap indicator
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Fuses for semiconductorFuses for semiconductorprotectionprotection
NH bolted fuselinks Type IB -Body sizes 000 and 00
Type SSizes 000, 00
Bolted (slotted) connectionsaccording to DIN 43653 andIEC60269-4-1
With top flap indicator
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Fuses for semiconductorFuses for semiconductorprotectionprotection
NH bolted fuselinksType IB - Body sizes 1, 2 and 3
Type SSizes 1, 2, 3
Bolted (slotted) connectionsaccording to DIN 43653 andIEC60269-4-1
With top flap indicator
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Fuses for semiconductorFuses for semiconductorprotectionprotection
NH bolted fuselinksType IB - Body sizes 1, 2 and 3
Type S-MSizes 1, 2, 3
Bolted (slotted)connections accordingto DIN 43653 andIEC60269-4-1
With centre tripindicator
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Fuses for semiconductorFuses for semiconductorprotectionprotection
NH flush-end fuselinks,Type IIA, up to 1200V up to 1250A
Type GSizes 1, 2, 3
Flush endconnections (facefixing) accordingto IEC 60269-4-1
With top flapindicator
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Fuses for semiconductorFuses for semiconductorprotectionprotection
NH flush-end fuselinks,Type IIA, up to 1000V up to 1250A
Type G-MSizes 1, 2, 3
Flush end connections(face fixing) accordingto IEC 60269-4-1
With centre tripindicator
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MicroswitchMK
MicroswitchNVS5
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UPS:
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Induction heater:
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Business Segments
OEM•OriginalEquipmentManufacturers
MRO•MaintenanceReplacementOperations
•Opportunity for large numberof fuses at one-time or on yearlyconsumption
•Price sensitive
•Direct contact with designengineers
•Cross-reference important
•Small number of fuses
•Short term delivery important-day to day
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Key words for finding salesopportunities?• Drives• Rectifires• UPS (computer, telecom, ADSL, VDSL, ISDN)• Power electronics• Converters, inverters, wind energy• Motors• Pumps, fans• Lift, crane• Electrolysis• DC power
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uickProducers of fuses for semiconductorprotection:• Bussmann• Ferraz• Siba• ETI• Siemens• Littelfuse• Efen• GE• Jean Muller• OEZ• Lawson• Fuji• …
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IRONWORKS
CABLE RAILWAY
( SKI CENTERS…)
Thermal, hydro, Aluminium POWER PLANT
RAILWAY
Welding machine
TRAMWAY
PRODUCER OF UPS SYSTEMS
PRODUCER OF MOTOR DRIVER
PRODUCER OF FREQUENCY CONVERTER ARMY-
SERVICE
ELECTRICAL CAR-
HEAVY INDUSTRY
PRODUCER OF DC-DC, AC-DC, DC- AC CONVERTERS
PHARMACEUTICAL
Petro-Chemical
Cement plantsPort authoritiesPrinting plants
Amusement parks
Food processing
Sewage treatment plants
Pulp and paper
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Where we can use UQ fuse?• UPS systems (Computer back up, Telecom, Hospital,
Emergency, Controled power shut down)• DC motor drives• Servo motors (inverters for brushless servomotors-CNC
machine, robot)• AC motor drivers (Soft starters, Freq. converters)• Power supplies (Chemical electrolysis, Al-Mg smelters,
Electrolytic winning of cadmium, copper, nickel, cobalt and non-ferrous materials, Zinc plants, Graphite electrode plants, DC arcFurnace)
• Inverters (Wind power, Fuel cell supplies equipment, airports-400Hz)
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Future application?
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Electronic motor controler market growing20-30% per year?
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Active Var-compensator-(triac switch) (FACTS) ?
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DCR
S
TAC
supply
F1
F2F3
1 2 3
4 5 6
3-phase controlled bridge converter
AC
AC
AC
Traction inverter
Bridge converter (DC motor converter)Power control
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Ultra Q
uickUPS
M
M
G
DC drive
Soft starter
AC drive
M
M
M
M
VV fuse
gR/aR fuse
gG fuse
DC fuse
aM fuse
Medium voltage generator
High voltage/Medium voltage
transformer
36kV
Compressors/Fans etc.
Medium voltage/Low voltage transformer
Lighting
Medium voltage/Low voltage transformer
Fuse in factory:
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Comparisoncharacteristics
ETI-Competitors
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World Standards:
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Standards IEC 60947-4-2:
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Ultra Q
uickSupport for:
engineersand
sales people
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Ultra Quick industryapplication (help for sales)
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Ultra Quick applicationguide
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Cross-reference
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Ultra Q
uickMulti languageversion
Insert competitor code
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References Ultra Quick(Siemens, GE, Bosch-Rexroth, Solcon, Siei…)
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Link to other documents:• Catalogue Semiconductor protection• Ultra Quick application guide• Ultra Quick in world industry• Cross-reference on internet• Ultra Quick select• References for Ultra Quick• Motor starter tables• Frequently asked questions• www.eti.si (semiconductor protection)
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Thanks