Voltage Dip Immunity of Equipment and Installations TUTORIAL
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Transcript of Voltage Dip Immunity of Equipment and Installations TUTORIAL
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Classification of Equipment Dip Immunity
Dip Immunity Labels(Part 7)
UIE working groupPower Quality
Voltage Dip Immunity of Equipment and Installations
TUTORIAL
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Voltage Dip Immunity Labels: Purpose
Facilitate communication & exchange of information on dip immunity
Advice on what steps to take to ensure that process is not adversely affected by voltage dips
Allow equipment manufacturers to report dip immunity of their equipment using only a few key test points
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Immunity Classes & Applications
Classification of equipment dip immunity and equipment behavior:
Voltage dip immunity labels– Classification of equipment dip immunity – Equipment Performance Criteria
Assessment and improvement of process dip immunity
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Voltage Dip Immunity Labels
1. What degree/level of equipment dip immunity is required?
• Introducing equipment dip immunity classes
2. What is the required behavior of equipment during and after a voltage dip?
• Equipment performance criteria
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Classification of Equipment Dip Immunity
5 Classes are introduced– Class A - highest level of equipment
immunity – Class B - good level of equipment
immunity – Class C1 - reasonable level of equipment
immunity– Class C2 - similar to class C1, take into
account certain nominal voltage levels– Class D - basic level of equipment immunity
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Class A
Class A specification of equipment dip immunity against type I + II dips
Class A specification of equipment dip immunity against type III dips
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Class BClass B specification of equipment dip immunity
against type I + II dipsClass B specification of equipment dip immunity
against type III dips
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Class C1Class C1 specification of equipment dip immunity
against type I + II dipsClass C1 specification of equipment dip immunity
against type III dips
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Class C2Class C2 specification of equipment dip immunity
against type I + II dipsClass C2 specification of equipment dip immunity
against type III dips
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Class DClass D specification of equipment dip immunity
against type I + II dipsClass D specification of equipment dip immunity
against type III dips
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?4,5 / year3,5-1+1,5-0,5+1=4,5
Class A specification of equipment dip immunity against Type III dips
CP95
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Typical exposure site
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Low exposure site
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High exposure site
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Very high exposure site
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Potential number of trips
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Equipment Performance Criteria
Full (normal) operation Self-recovery Assisted-recovery
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Voltage dip immunity labels
Full operation Self-recovery Assisted-recoveryABC1C2D
Voltage dipimmunity label
Equipment performance criteria
Imm
unity
cl
ass
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The report can be obtained in electronic format for free from:
www.uie.org;
a hardcopy can be purchased from www.e-cigre.org
Francisc Zavoda Robert Neumann