Re: #Felder_3phase_Machine_Motor_Currents_KF700_K975_Dual51 #felder_3phase_machine_motor_currents_kf700_k975_dual51
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The three phase higher hp felder motors I've seen are soft start so starting the rpc will be the limitation, not the machines.? I have 110 amps going to the garage shop and can run about 20 hp at the same time and my old motors are generally hard starting.?
Dave From: [email protected] <[email protected]> on behalf of imranindiana via groups.io <imranindiana@...>
Sent: Saturday, March 6, 2021 1:51 PM To: [email protected] <[email protected]> Subject: [FOG] #Felder_3phase_Machine_Motor_Currents_KF700_K975_Dual51 ?
I thought this might help folks make an informed decision when they have limited power in shop. Actual currents are usually much less than what is listed on the label. All measurements made with motor idling. I made these measurements with a inexpensive clamp meter. I noted maximum current that I saw. Since this is not a true RMS meter a fudge factor of 10% should be sufficient to provide worst case current. ? KF700 Machine Label. Measured shaper 3KW motor. Measured Starting 18A. Idling 2.8A. I had previously measured current with a scope on this machine and a peak current of 4A matches the RMS reading I took.
? K975 Machine Label. Measured saw motor (5.5KW) alone and Saw & Scoring (1.1KW) motors together. Measured Starting 24A. Saw idling 4A. Saw & Scorer idling 5.7A.
? Format4 Dual51 Machine Label. 7.35KW motor. Measured Starting 38A. Idling 6.2A. I had previously measured current with a scope on this machine and a peak current of 10A equates to 7A RMS. So I would suggest using 7A.
? Hope this is helpful. ? Imran |