Zac Penn
Plastic
- Joined
- Oct 4, 2019
- Location
- Jacksonville
EDIT: The motor is actually a 10 HP motor!!!
I have a 10 HP 230VAC 3-phase compressor that is creating a pretty big voltage drop at the circuit panel. One problem is that my building has 120VAC or 208VAC 3-phase power supply that usually reads 214-216 VAC depending on what legs you probe. Because of lower voltage, the compressor is pulling more amps than the nameplate says it should. Just before the pressure switch turns off the motor it is pulling about 28 Amps and it is listed at 24 Amps on the nameplate, but that doesn't really bother me as I have a 30 Amp breaker at the panel for safety. The wiring from the panel to the compressor is all 8 gauge so the wire is sized correctly for the job.
When the compressor turns on, the voltage drops at the main lugs of the panel from 214-216 VAC down to 200-202 VAC for about 3-5 seconds then it jumps back up to normal. This wouldn't bother me except for the fact that my Cosmec Conquest 510 CNC Router is connected to the same panel and every once in a while the voltage drop will cause the CNC to go into Watchdog Mode due to the voltage drop. It doesn't specifically say it was due to a voltage drop, but I have concluded that is the issue. I have been at the control panel enough times, at the exact moment when it goes into Watchdog Mode and that is precisely when the compressor turns on. Like I said earlier, it isn't every time, or every 3 times, but the only time this error happens is when the compressor has just turned on (like within 1 second of the compressor turning on).
I can't EASILY isolate the compressor from the CNC without running 200+ feet of 8/3 MC from another panel in the warehouse. That is a pretty good chunk of change for the wiring, plus the rental of a scissor lift, and labor time involved with the install. I was doing some research and I found this at Grainger, and thought it might be a good fix for this problem....
WEG Power Factor Correction Capacitor,3.00 KVAR,240VAC Voltage,7.9" Width,4.8" Depth,15.8" Height - 16Y128'|'BCWTC300V29B4-N - Grainger
The price is right on this product if it will do what I need, but I was hoping maybe you guys could confirm this would work, or had a better solution, or at least the right solution for around the same price point????
Thanks,
Zac
EDIT: The motor is actually a 10 HP motor!!!
I have a 10 HP 230VAC 3-phase compressor that is creating a pretty big voltage drop at the circuit panel. One problem is that my building has 120VAC or 208VAC 3-phase power supply that usually reads 214-216 VAC depending on what legs you probe. Because of lower voltage, the compressor is pulling more amps than the nameplate says it should. Just before the pressure switch turns off the motor it is pulling about 28 Amps and it is listed at 24 Amps on the nameplate, but that doesn't really bother me as I have a 30 Amp breaker at the panel for safety. The wiring from the panel to the compressor is all 8 gauge so the wire is sized correctly for the job.
When the compressor turns on, the voltage drops at the main lugs of the panel from 214-216 VAC down to 200-202 VAC for about 3-5 seconds then it jumps back up to normal. This wouldn't bother me except for the fact that my Cosmec Conquest 510 CNC Router is connected to the same panel and every once in a while the voltage drop will cause the CNC to go into Watchdog Mode due to the voltage drop. It doesn't specifically say it was due to a voltage drop, but I have concluded that is the issue. I have been at the control panel enough times, at the exact moment when it goes into Watchdog Mode and that is precisely when the compressor turns on. Like I said earlier, it isn't every time, or every 3 times, but the only time this error happens is when the compressor has just turned on (like within 1 second of the compressor turning on).
I can't EASILY isolate the compressor from the CNC without running 200+ feet of 8/3 MC from another panel in the warehouse. That is a pretty good chunk of change for the wiring, plus the rental of a scissor lift, and labor time involved with the install. I was doing some research and I found this at Grainger, and thought it might be a good fix for this problem....
WEG Power Factor Correction Capacitor,3.00 KVAR,240VAC Voltage,7.9" Width,4.8" Depth,15.8" Height - 16Y128'|'BCWTC300V29B4-N - Grainger
The price is right on this product if it will do what I need, but I was hoping maybe you guys could confirm this would work, or had a better solution, or at least the right solution for around the same price point????
Thanks,
Zac
EDIT: The motor is actually a 10 HP motor!!!
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