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actula power value from masterdrive VC

Created by: akyilmaz1977 at: 2/16/2010 4:54 PM (14 Replies)

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2/16/2010 4:54 PM	Rate (0)
akyilmaz1977 Posts: 20 Rating: (0)	Hello everybody; Is there any parameter or calculation for actual power value from masterdrive VC? You can find some parameters below which related with I tryed to calculate power of motor; r002=29 r003=221 r004=696 r005=26.8 r006=534 r007=47 r008=30 P72=1300 P73=740 P101=400 P102=1317 P105=900 P108=1030 I calculated according to power formula like: P=1.73400696*0,85=409kW We have parameter r005 (percentage output power?) How can Iuse this? Thanks in advance..
akyilmaz1977 Posts: 20 Rating: (0)
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2/17/2010 7:56 AM	Rate (0)
Vithani Platinum Expert Joined: 7/8/2009 Last visit: 6/7/2025 Posts: 1977 Rating: (479)	Why u wnt to calculate power while it is showing in r005?? In r005, you will find out put power ( Motor Power ) as a percentage of your Rated Power which has been Set by You Regards, Devesh
	I dont Like people driving Fast, thats the reason I overtake them ;)
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2/17/2010 8:23 AM	Rate (0)
akyilmaz1977 Posts: 20 Rating: (0)	Thanks Vithani So, actual power is according to your answer = P105r005 <-- Is it right? If we calculate actual power using this formula --> P=900hp0,26=234hp 234hp=1.341kW kW=174.5 But according to the power calculation P=√3VICosφ=1.73400696*0,85=409kW Why these two calculations resultsdoesnt't match?
akyilmaz1977 Posts: 20 Rating: (0)
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2/17/2010 8:33 AM	Rate (0)
Vithani Platinum Expert Joined: 7/8/2009 Last visit: 6/7/2025 Posts: 1977 Rating: (479)	Have You measured Voltage??? Give me the datas... Frewuency?? Voltage?? -- measured at output terminals of drive Current?? And reading in r005.
	I dont Like people driving Fast, thats the reason I overtake them ;)
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2/17/2010 10:27 AM	Rate (0)
akyilmaz1977 Posts: 20 Rating: (0)	r002=29.93 r003=220 r004=685 r005=25.6 r007=46 Measured value (with multimeter) = Phase to phase motor voltage=260V Phase to ground=246V
akyilmaz1977 Posts: 20 Rating: (0)
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2/17/2010 11:03 AM	Rate (0)
Vithani Platinum Expert Joined: 7/8/2009 Last visit: 6/7/2025 Posts: 1977 Rating: (479)	Please provide actual motor name plate data I need Rated Speed Rated Torque No of Poles. I think you are running drive on 30 Hz. Correct me if I am wrong Regards, Devesh
	I dont Like people driving Fast, thats the reason I overtake them ;)
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2/17/2010 12:16 PM	Rate (0)
akyilmaz1977 Posts: 20 Rating: (0)	ELIN motor typ:MKH-745 B06 FWB rpm:1030 6 pole torque:6490Nm
akyilmaz1977 Posts: 20 Rating: (0)
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2/18/2010 11:10 AM	Rate (1)
Vithani Platinum Expert Joined: 7/8/2009 Last visit: 6/7/2025 Posts: 1977 Rating: (479)	Hi Sorry for delay in reply.. I was little busy.. Now as per your data, At 30 Hz freq your torque is 64900.46 = 2985.4 Speed is 103030/60 = 515 -- I think your motor rated freq is 60 Hz Now for Power calculation, see attached document, P = M * n = 2985.4 * 515 = 154 KW I hope you are clear now.... Regards, Devesh Vithani Attachment Equations - Formulaes.pdf (662 Downloads)
	I dont Like people driving Fast, thats the reason I overtake them ;)
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This contribution was helpful to 1 thankful Users manoj_thakor

2/18/2010 1:10 PM	Rate (0)
akyilmaz1977 Posts: 20 Rating: (0)	Thanks your answer So, what about parameter of r005? You calculated power 154kW. How can we find 154kW using r005? best regards..
akyilmaz1977 Posts: 20 Rating: (0)
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2/18/2010 1:26 PM	Rate (0)
Vithani Platinum Expert Joined: 7/8/2009 Last visit: 6/7/2025 Posts: 1977 Rating: (479)	Hi.. I did not checked that. But its calculated on the same basis. It will calculated from Reference parameters P350 series. You can refer the Function Diagram No 285 and 286 for that. Hope this will help you. Cheers, Regards, Devesh Vithani
	I dont Like people driving Fast, thats the reason I overtake them ;)
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