Question 4. The approximate equivalent circuit of a three-phase ∆ /∆ connected 60 Hz, 4000/1000 V transformer reduced to the primary and its parameters are as follows. It is given as Z'y=7.75+j8.85 Ω. A voltage of 4000 Volt is applied to the primary winding of this transformer. Accordingly, calculate the values ​​of primary line current, secondary line current, secondary line voltage and total input and output power for the three phases. 1-) If 4000 Volt voltage is applied to the primary of the transformer above, enter the amplitude value of the primary line current in the box below. ( Phase value will not be entered, for example, if the amplitude is 150 Volts phase is 36.86 degrees, only 150 will be entered!!! 2 digits after the comma will be enough. ) 2-) If 4000 Volt is applied to the primary of the transformer above, enter the amplitude value of the secondary line current in the box below. ( Phase value will not be entered, for example, if the amplitude is 150 Volts phase is 36.86 degrees, only 150 will be entered!!! 2 digits after the comma will be enough. ) 3-) If 4000 Volt is applied to the primary of the transformer above, enter the amplitude value of the secondary line voltage in the box below. ( Phase value will not be entered, for example, if the amplitude is 150 Volts phase is 36.86 degrees, only 150 will be entered!!! 2 digits after the comma will be enough. ) 4-) If 4000 Volt voltage is applied to the primary of the transformer above, enter the three-phase total input power value in kW into the box below. ( 2 digits after the comma will be enough. ) 5-) If 4000 Volt voltage is applied to the primary of the transformer above, enter the three-phase total output power value in kW in the box below. ( 2 digits after the comma will be enough. )

Electric Motor Control
10th Edition
ISBN:9781133702818
Author:Herman
Publisher:Herman
Chapter3: Magnetic Starters
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Question 4. The approximate equivalent circuit of a three-phase ∆ /∆ connected 60 Hz, 4000/1000 V transformer reduced to the primary and its parameters are as follows. It is given as Z'y=7.75+j8.85 Ω. A voltage of 4000 Volt is applied to the primary winding of this transformer. Accordingly, calculate the values ​​of primary line current, secondary line current, secondary line voltage and total input and output power for the three phases.

1-) If 4000 Volt voltage is applied to the primary of the transformer above, enter the amplitude value of the primary line current in the box below. ( Phase value will not be entered, for example, if the amplitude is 150 Volts phase is 36.86 degrees, only 150 will be entered!!! 2 digits after the comma will be enough. )

2-) If 4000 Volt is applied to the primary of the transformer above, enter the amplitude value of the secondary line current in the box below. ( Phase value will not be entered, for example, if the amplitude is 150 Volts phase is 36.86 degrees, only 150 will be entered!!! 2 digits after the comma will be enough. )

3-) If 4000 Volt is applied to the primary of the transformer above, enter the amplitude value of the secondary line voltage in the box below. ( Phase value will not be entered, for example, if the amplitude is 150 Volts phase is 36.86 degrees, only 150 will be entered!!! 2 digits after the comma will be enough. )

4-) If 4000 Volt voltage is applied to the primary of the transformer above, enter the three-phase total input power value in kW into the box below. ( 2 digits after the comma will be enough. )

5-) If 4000 Volt voltage is applied to the primary of the transformer above, enter the three-phase total output power value in kW in the box below. ( 2 digits after the comma will be enough. )

Soru 1. Üç fazlı A/A bağlı 60 Hz, 4000/1000 luk bir transformatörün primere indirgenmiş yaklaşık
eşdeğer devresi ve bu devreye ait parametreleri aşağıdaki gibidir. Sekondere bağlı yükün primere
indirgenmiş empedansı Z', = 7,75 +j5,85 n olarak verilmiştir. Bu transformatörün primer sargısına
4000 Volt gerilim uygulanmaktadır. Buna göre primer hat akımı, sekonder hat akımı sekonder hat gerilimi
ile üç faz için toplam giriş ve çıkış güçlerinin değerlerini hesaplayınız.
R₁ = 0,10
X1 = 0,1 Ω
Gc= 4 mS
R₂ = 0,15
Bm = 3 mS
4₁
Ich
Ra
Ta
Xml
X₂=
R₁ R₂
www-ww
Real
= 0,05 Ω
Zeal
X₁1
X12 12
Xeql
V/₂₂
Transcribed Image Text:Soru 1. Üç fazlı A/A bağlı 60 Hz, 4000/1000 luk bir transformatörün primere indirgenmiş yaklaşık eşdeğer devresi ve bu devreye ait parametreleri aşağıdaki gibidir. Sekondere bağlı yükün primere indirgenmiş empedansı Z', = 7,75 +j5,85 n olarak verilmiştir. Bu transformatörün primer sargısına 4000 Volt gerilim uygulanmaktadır. Buna göre primer hat akımı, sekonder hat akımı sekonder hat gerilimi ile üç faz için toplam giriş ve çıkış güçlerinin değerlerini hesaplayınız. R₁ = 0,10 X1 = 0,1 Ω Gc= 4 mS R₂ = 0,15 Bm = 3 mS 4₁ Ich Ra Ta Xml X₂= R₁ R₂ www-ww Real = 0,05 Ω Zeal X₁1 X12 12 Xeql V/₂₂
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