81Merlin Gerin MV Design GuideSchneider Electric

c MV partner(Pierre GIVORD)

c Protection of electrical networks(Christophe PREVE)

c Protection of electrical networks(édition HERMES fax 01 53 10 15 21)(Christophe PREVE)

c Medium voltage design(André DELACHANAL)

c Cahiers techniques

v n°158 calculating short-circuit currents

v n°166 enclosures and protection indices (Jean PASTEAU)

References Reference to Schneider Electricdocumentation

83Merlin Gerin MV design guideSchneider Electric

Index

Denomination pages

AAcceleration 67-69Accuracy 57Accuracy class 62Accuracy limit factor 58Accuracy power 57-62Active power 68Altitude 53-79Angle 67Angular acceleration 67Angular speed 67Aperiodic component 48Apparent power 68Area 67Arrangement 29Asynchronous 14-16Automatic reclosing 48

BBending 28Block 10Breaking current 48-50-51-52-75British thermal unit 69British thermal unit per (pound.degree Fahrenheit) 69British thermal unit per cubic foot.degree Fahrenheit 69British thermal unit per hour 69British thermal unit per pound 69British thermal unit per second 69British thermal unit per square foot.hour 69Busbars 15-21-28Busducting 27-29-37

CCables 15Cable-charging 51Calculating a force 27Calculation 15-17-21Calorie capacity 69Calory power 69Capacitor bank 51-52Capacity 68Celsius 68Circuit breaker 45-48Closing 52Closing capacity 74Closing-opening 47Comparison 72Compartmented 10Concentration 67Condensation 38Conditions 52Conductance 68Conductivity 68Construction 78Coordination 53-77Cross section 21Cubic foot 69Cubic inch 69Cubicles 10Current 8-67-68Current transformer 54-55

DDegree Fahrenheit 69Degree Rankine 69Density 67Derating 64-65-78Dielectric strength 38Dielectric withstand 38-39-40Differential 59-60Differential transformer 60Disconnector 9Disconnector switch 9

Alphabetical Index

Discordance 50Distances 38-39Documentation 81

EEarthing disconnector 9Electrical endurance 53-78Electrodynamic withstand 27Endurance 53-78Energy 68-69Energy (torque) 69Entropy 68Environment 40Equipment 9Equivalent diagram 19Equivalent impedance 16

FFactor 49-61Fault Arcs 16Field 68Fixed circuit breaker 9Fixed contactor 9Fluid ounce (UK) 69Fluid ounce (US) 69Flux 68Foot 69Foot of water 69Foot per second squared 69Force 68-69Forces 27Forces between conductors 27Frequency 9-29-37-47-54-67

GGallon (UK) 69Gallon (US) 69Generators 14-15

HHeat capacity 69Humidity 38-53-79

IIK code 43Impedance method 17Impulse testing 39Inch 69Inch of water 69Inductance 68Induction 68Insulation level 6Intrinsic resonance frequency 29Ionization threshold 38IP code 41

KKnot 69

LLength 67-69Level of pollution 40Lightning impulse 39-7Linear mass 29-37-67-69Line-charging 51Load 68Low inductive currents 52Luminous 67

M…Magnetic field 69Magnetisation 68Magnitudes 67Making current 46Mass 67-69Mass per surface area 67-69Mass per volume 67-69

84 Merlin Gerin MV design guide Schneider Electric

Alphabetical IndexIndex

Denomination pages

…MMaterials 67Mechanical effects 21Mechanical endurance 53-78Mechanical withstand of busbars 28Metal enclosure 9Metal-clad 10Metre 67Mile (UK) 69Minimum distances 39Modulous of elasticity 29-37Modulous of inertia 28-29-37Moment of a force 68Moment of inertia 29-69Motors 16Movement 68Multi-stage 51-52

NNetwork 15

OOersted 69Operating current 8Operating current 55Operating voltage 6-21Ounce 69Over-current factor 56Overhead lines 15Overview 72Overvoltages 6

PPeak 50Peak value 9-46-74Peak value of admissible current 9Period 67Periodic component 48Periodic phenomena 67Permissible short time withstand current 46-73Permissible strain 28Permittivity 68Phase error 63Phase shift 63-67Phase to earth 39Phase to phase 39-63Plane angle 67Pollution 38-40Potential 68Pound 69Pound force per square foot 69Pound force per square inch 69Pound force-foot 69Pound force-inch 69Pound force-second per square foot 69Pound per cubic foot 69Pound per cubic inch 69Pound per foot 69Pound per foot-second 69Pound per inch 69Pound per square foot 69Pound per square inch 69Pound square foot 69Pound-force 69Power 14-68Power level 67Pressure 38-68-69Pressure-strain 69Primary current 55Primary voltage 61Protection index 41-43

QQuantity 68

RRadiation factor 68Rated current 8-21-24-46-73Rated frequency 75Rated insulation level 46-72Rated short circuit 46-74Rated values 77Rated voltage 6-7-21-45-47-54-72-74Ratio error 63Reactive power 68Resistance 68Resistivity 68Resonance 29-37Resultant strain 28

SSafety factor 57Shape of parts 38-39Short circuit power 11-21Short time withstand current 26Short-circuit current 9-19Solid angle 67Speed 67Square foot 69Square inch 69Standards 71States 14Strain 68Supports 27-29Surface area 67-69Switch 9Switching sequence 47-75Symbols 67Synchronous compensators 16

TTemperature 38-52-69-79Temperature rise 22-23Thermal 56-68Thermal conductivity 69Thermal effects 21Thermal flux 69Thermal power 63Thermal short circuit current 56Thermal withstand 24Thermodynamic 67-68Thermodynamic temperature 67-68Three phase calculation example 17Time 67Transformation ratio 63Transformers 13-14-15Transient 49

UUnits 67Units of measurement 67

VVibration 29-37Viscosity 68-69Voltage 6-49-62-68Voltage transformer 61Volume 67-69Volume per mass 67Volume per mass 68

WWave lengths 67Weight 68Withdrawable circuit breaker 9Withdrawable contactor 9Work 68

YYard 69

Schneider ElectricIndustrie SA

Postal addressF-38050 Grenoble cedex 9Tel.: +33 (0)4 76 57 60 60Telex: merge 320842 Fhttp://www.schneider-electric.com

Rcs Nanterre B 954 503 439

The technical data given in this guide are given for informationpurposes only. For this reason, Schneider Electric Industries SAis in no way liable for any omission or error contained in itspages.

Published by: Schneider Electric Industries SACreation, layout by: HeadLinesPrinted by:ART 86206

03/2000

AM

TE

D30

0014

EN

This document has beenprinted on ecological paper.