Control.com

Capacitor rating

Search Forums New Posts
I

Thread Starter

Imran

I have 1 HP 1-phase motor. I want to know what is effect of capacitor rating on motor amperes, for example if we increase or decrease capacitance. Also if we change 110 UF, 275 V AC capacitor with 110 UF 400 V ac, what will happen? Either current decreases or not.

Regards,

imranshakoor7 at yahoo. com
 
B

Bob Peterson

The motor itself draws the same amount of current, with ot without the capacitor.

The voltage rating of the capacity has no effect on current. It only refers to the limits of voltage that can be applied.
 
C

Curt Wuollet

Probably, nothing will happen immediately. It will work fine and the cap is only used in starting anyway. As the cap deforms to the lower voltage over time, the capacitance may go up a bit, but that may take years at a few seconds per start. The effect on starting current will probably not be too significant even then.

Regards
cww
 
You must log in or register to reply here.
Thread starter Similar threads Forum Replies Date
Chanaka_T26 Repeated Capacitor Failure on Single-Phase Pump Connected to Pressure Controller (230V) Electrical Engineering 5
N Single phase VFD to overcome need for starting capacitor? Motion Control 2
Ahmad786 How should i connect my single phase induction motor to soft starter so that i can protect starting capacitor or soft starter's PCR from buring out? General Automation Chat 1
leVanw I don't know if the capacitance of a capacitor is large, the capacitor will discharge with a larger current than other capacitors with the same voltag Electrical Engineering 9
H Ampere-Hour rating for a Capacitor Electrical Engineering 8
Similar threads
Repeated Capacitor Failure on Single-Phase Pump Connected to Pressure Controller (230V)
Single phase VFD to overcome need for starting capacitor?
How should i connect my single phase induction motor to soft starter so that i can protect starting capacitor or soft starter's PCR from buring out?
I don't know if the capacitance of a capacitor is large, the capacitor will discharge with a larger current than other capacitors with the same voltag
Ampere-Hour rating for a Capacitor

You May Also Like

Top