I have a standard 5hp 3ph induction motor running a pump through a gear reducer. Inverter controlled (Allen-Bradley PF70 drive). I have very poor speed accuracy (4% error) using open loop mode. I want to install an encoder on the motor and run in closed loop control.
I am wondering what ppr...
Hello. I was wondering if there are posted or recommended budget numbers for utilities costs for a large facility (manufacturing). If they exist, I assume they would be dependant on the seasonal weather conditions experienced in that area. (I'm in Ontario - about 50%-50% summer-winter balance)...
Hello, I need an approx calculation of energy savings for a fan application. Currently the 44hp motor is run at line voltage and a damper is adjusted to get approx half the rated air flow from the fan (1/2 load). We want to install an frequency inverter to adjust the fan speed to deliver the...
Fred, I met with a representative of your company. he was not interested in this work. Acttually, he refused to return to my Plant. His reasoning for this was due to our asbestos insullation on our piping??? Hard for me to believe that he designs induction heaters for vessels and has never...
Thanks. Yes that makes sense. HP is HP. I'll keep the same hp for the AC motor and Inverter. by the way the application is a polymer extruder pump.
Thanks again.
CAF
I have heard that it is recommended to upsize the hp when replacing a DC drive with a 3 phase AC drive. Is this still a recommended practice?
I have a 240VDC 10hp 1750rpm drive to be replaced with a 575VAC 3ph drive w/inverter. Should I select a 12.5 or 15hp inverter and drive?
Thanks.
CAF
I am installing 100hp air compressors. I am wondering if I put the breaker panel within line of site from the compressors, can I eliminate the local fused disconnect at each compressor? The breaker would be the point of lock-out.
Thanks.
CAF
My induction heater is Simply a coil of wire wrapped around a vessel. There is a mercury switch which closes and energizes the coil of wire with 575VAC (60Hz). This creates a field inside the vessel which causes current to flow within the internal metal baffels of the vessel. This causes them...
Looking for a company with expertise in custom induction heater applications. We have some induction heaters on a vessel that was built back in '67. two of the four heater coils have failed recently. We need a repair/replacement.
I have standardized to Automation Direct PLCs in my Plant. DL06 for small apps and DL205 for greater io apps. I also have a SCADA Data Collection system implemented with DL405 modules/rack w/ Ethernet Base Controller to poll inputs and transfer to SCADA PC. Everything is working great.
Only...
I have 400V (380V) rated production equipment in my Plant which is comming from Germany. Up til now we have special ordered step-down powee transformers to supply this equipment with it's rated 400V 3ph power. I noticed that the spec on the equipment indicated an 'PERMITTED RANGE OF VOLTAGE...
Can a Moeller PKZMO Manual Motor Protector be used for general(other than motor load) cct protection in lue of fusing/cct breaker?
According to Electrical Code (Canadian or American)?
CAF
