⎝⎛pt电子游戏⎞⎠

Chinese home appliance industry film capacitor brand
Phone: 400-9903-638
QQ: 672785002
You are here: ⎝⎛pt电子游戏⎞⎠ > Capacitor Formula
1.Calculation of capacitor life
2. Calculation of motor running capacitance
3.Capacitor loss power calculation
4.Capacitor thermal resistance and hotspot calculation
1.Calculation of capacitor life
J-motor starting winding current density constant Value range: 5-7
S-start winding wire cross-section
C-Capacitance μF
Method Two:
I-Motor rated current
U-power voltage
cosφ-power factor Value range: 0.7-0.8
C-Capacitance μF
Method three:
k-current coefficient Value range: 0.5-0.7
P-Motor rated power
cosφ-power factor Value range: 0.7-0.8
C-Capacitance μF
Three-phase motor:
I-rated current
p-power factor Value range: 1-2
f-frequency
U-rated voltage
cosφ-power factor Value range: 0.55-0.75
C-Capacitance μF
3.Capacitor loss power calculation
U-rated voltage VAC
f-frequency Hz
C-Capacitance F
Loss at tanδ-f frequency
P-loss power W
Capacitive thermal resistance calculation:
I-current A
f-frequency Hz
C-Capacitance F
tanδ-dielectric loss
Rs-contact resistance Ω
θHs-hot spot temperature
θamb-ambient temperature
Rth-capacitor thermal resistance ℃ / w
Capacitor hotspot temperature calculation:
I-current A
f-frequency Hz
C-Capacitance F
tanδ-dielectric loss
Rs-contact resistance Ω
Rth-thermal resistance ℃ / w
θamb-ambient temperature
θHs-hot spot temperature
Guangdong Fengming Electronic Technology Co., Ltd. Address: No. 1 Longle Road, Huanglong Village Committee, Beibei Town, Shunde District, Foshan City, Guangdong. Service Hotline: 400-9903-638 QQ: 672785002
Record number: 粤 ICP 备 12027368 号 -5
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