short circuit in xls

Simplicity of Short Circuit Calculation 3 Different Transformer 3 Different Generator 3 Different Motor No Conductor Resistance Calculation Short Circuit Value is: 4.91 kA Power System Constant c 1.1 c IEC Short Circuit Power 5000 MVA IEC Transformer A Transformer B Transformer C Quantity 1 Pcs Quantity 0 Pcs Quantity Primary Voltage 6.6 kV Primary Voltage 6.6 kV Primary Voltage Secondary Voltage 20 kV Secondary Voltage 20 kV Secondary Voltage Rated Apparent Power 16 MVA Rated Apparent Power 40 MVA Rated Apparent Power Rated Short Circuit 10 % Rated Short Circuit 11 % Rated Short Circuit 4.91 kA 4.91 kA 0.00 Generator A Generator B Generator C Quantity 0 Pcs Quantity 0 Pcs Quantity Rated Voltage 0.4 kV Secondary Voltage 0.4 kV Secondary Voltage Rated Apparent Power 10 MVA Rated Apparent Power 10 MVA Rated Apparent Power Subtransient Reactanc 12 % Subtransient Reactanc 12 % Subtransient Reactanc 0.00 kA 0.00 kA 0.00 Motor A Motor B Motor C Quantity 0 Pcs Quantity 0 Pcs Quantity Rated Voltage 12 kV Rated Voltage 12 kV Rated Voltage Active Power 8 MW Active Power 8 MW Active Power 0.85 0.85 Rotor Locked current 5 Ir Rotor Locked current 5 Ir Rotor Locked current 0.00 kA 0.00 kA 0.00 kA IkT + IkG + IkM = S"kq VP VP VP VS VS VS Sr Sr Sr ukr ukr ukr Total IkT Transformer IkT Transformer A IkT Transformer B IkT Transformer C Ur VS VS Sr Sr Sr X"d X"d X"d Total IkG Generator IkG Generator A IkG Generator B IkG Generator C Pr Pr Pr Phase angle Ir and Ur Cos jr Phase angle Ir and Ur Cos jr Phase angle Ir and Ur Cos jr Total IkM Motor IkM Motor A IkM Motor B IkM Motor C I kT } } = { { size 8{c cdot S rSub { size 6{rT} } } } over { sqrt {3} cdot U rSub { size 6{rT} } cdot left ( { { size 6{u rSub {kr} } } over { size 6{100 % } } } +c cdot { { size 6{S rSub {rT} } } over { size 6{S rSub {kQ} rSup { ¿¿¿¿¿¿¿¿ I kM } } = { { size 8{c cdot { { size 6{I rSub {LR} } } ove r { size 6{I rSub {r} } } } cdot P rSub { size 6{r} } } } over { sqrt {3} cdot U rSub { size 6{r} } cdot cosϕ rSub { size 6{r} } } } } {¿¿ ¿ I kG } } = { { size 8{c cdot S rSub { size 6{r} } } } over { sqrt {3} cdot U rSub { size 6{r} } cdot { { size 6{x rSub {d} rSup { 100% ¿¿¿¿

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Simplicity of Short Circuit Calculation3 Different Transformer3 Different Generator3 Different MotorNo Conductor Resistance Calculation

Short Circuit Value is:

4.91 kA

Power SystemConstant c 1.1 c IEC

Short Circuit Power 5000 MVA IEC

Transformer A Transformer B Transformer CQuantity 1 Pcs Quantity 0 Pcs Quantity 0 Pcs

Primary Voltage 6.6 kV Primary Voltage 6.6 kV Primary Voltage 6.6 kV

Secondary Voltage 20 kV Secondary Voltage 20 kV Secondary Voltage 20 kV

Rated Apparent Power 16 MVA Rated Apparent Power 40 MVA Rated Apparent Power 40 MVA

Rated Short Circuit 10 % Rated Short Circuit 11 % Rated Short Circuit 11 %

4.91 kA 4.91 kA 0.00 0.00

Generator A Generator B Generator CQuantity 0 Pcs Quantity 0 Pcs Quantity 0 Pcs

Rated Voltage 0.4 kV Secondary Voltage 0.4 kV Secondary Voltage 0.4 kV

Rated Apparent Power 10 MVA Rated Apparent Power 10 MVA Rated Apparent Power 10 MVA

Subtransient Reactance 12 % Subtransient Reactance 12 % Subtransient Reactance 12 %

0.00 kA 0.00 kA 0.00 0.00

Motor A Motor B Motor CQuantity 0 Pcs Quantity 0 Pcs Quantity 0 PcsRated Voltage 12 kV Rated Voltage 12 kV Rated Voltage 12 kV

Active Power 8 MW Active Power 8 MW Active Power 8 MW

0.85 0.85 0.85

Rotor Locked current 5 Ir Rotor Locked current 5 Ir Rotor Locked current 5 Ir

0.00 kA 0.00 kA 0.00 kA 0.00 kA30/12/2005 TN

IkT + IkG + IkM =

S"kq

VP VP VP

VS VS VS

Sr Sr Sr

ukr ukr ukr

Total IkT Transformer IkT Transformer A IkT Transformer B IkT Transformer C

Ur VS VS

Sr Sr Sr

X"d X"d X"d

Total IkG Generator IkG Generator A IkG Generator B IkG Generator C

Pr Pr Pr

Phase angle Ir and Ur Cos jr Phase angle Ir and Ur Cos jr Phase angle Ir and Ur Cos jr

Total IkM Motor IkM Motor A IkM Motor B IkM Motor C

I kT} } = { { size 8{c cdot S rSub { size 6{rT } } } } over { sqrt {3} cdot U rSub { size 6{rT } } cdot left ( { { size 6{u rSub {kr } } } over { size 6{100 %} } } +c cdot { { size 6{S rSub {rT } } } over { size 6{S rSub {kQ } rSup {¿¿¿¿¿ ¿ ¿¿

I kM} } = { { size 8{c cdot { { size 6{I rSub {LR} } } over { size 6{I rSub {r} } } } cdot P rSub { size 6{r} } } } over { sqrt {3} cdot U rSub { size 6{r} } cdot cos ϕ rSub { size 6{r} } } } } {¿ ¿¿

I kG} } = { { size 8{c cdot S rSub { size 6{r} } } } over { sqrt {3} cdot U rSub { size 6{r} } cdot { { size 6{x rSub {d} rSup {

100% ¿¿¿¿

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