Are the cheap Pittsburg tools any good? Anybody have anything good to say about these? The general idea is that they're too cheap to be any good.
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#2
Electrical and Electronic / What is Sensorless Vector Control
February 21, 2019, 10:39:AM
What is Sensorless Vector Control? Is sensorless control somehow superior to other methods, or is it just another option based on application?
#3
The Maintenance Saloon / Define Reverse Torque
February 21, 2019, 10:37:AM
Please define reverse torque seems like common sense torque in reverse but am I missing something?
#4
The Maintenance Saloon / What is NEMA?
February 21, 2019, 10:35:AM
What is NEMA exactly and how much do NEMA ratings matter in a standard industrial environment?
#5
Troubleshooting 101 / Isolation Transformer on a Drive or Inverter
February 06, 2019, 07:43:AM
Is it common practice to use an isolation transformer on a drive or inverter in noisy environments? Or do we only add isolation transformers when there are problems?
#6
Electrical and Electronic / Don't Use Dynamic Braking
February 06, 2019, 07:41:AM
Dynamic braking seems to be the braking solution for most applications in my opinion. Is there a situation or certain type of application where you don't use dynamic braking?
#7
Electrical and Electronic / What is Deadband?
February 06, 2019, 07:38:AM
Can someone provide a textbook definition of deadband in relation to inverters and drives? What is deadband?
#8
Electrical and Electronic / What is Reactance
January 22, 2019, 04:00:AM
Question: What is reactance in regards to drives and motors? What does "reactance" mean?
#9
Troubleshooting 101 / What is Duty Cycle
January 22, 2019, 03:58:AM
Question: What is Duty Cycle in reference to AC and DC motors?
#10
The Maintenance Saloon / What is Break Away Torque
January 22, 2019, 03:56:AM
Question: What is Break Away Torque? I believe it is a motor spec but not sure how to define it.
#11
Troubleshooting 101 / Thermal Switch Failure
January 20, 2019, 06:39:AM
Has anyone seen repeated thermal switch failure in a motor application that doesn't produce much heat? I would expect heat to cause switch failure but this isn't the case.
#12
The Maintenance Saloon / Is EMI ever an issue with motors and drives?
January 20, 2019, 06:36:AM
Guys,
Is EMI ever an issue with motors and drives? I have not seen any evidence but have heard others talking about filtering it with external components.
Is EMI ever an issue with motors and drives? I have not seen any evidence but have heard others talking about filtering it with external components.
#13
The Maintenance Saloon / Advantage of Single Phase Power Over Three Phase
January 20, 2019, 06:32:AM
Is there any advantage of using single phase power over three phase power?
#14
The Maintenance Saloon / Define Rotor and Stator
January 20, 2019, 06:30:AM
Guys,
In terms of motors you hear rotor and stator thrown around all the time. Can someone properly define rotor and stator and the difference between the two?
In terms of motors you hear rotor and stator thrown around all the time. Can someone properly define rotor and stator and the difference between the two?
#15
Electrical and Electronic / What is a PWM Drive?
January 20, 2019, 06:28:AM
Guys,
What is a PWM Drive? (Pulse-Width Modulation Drive)
What is a PWM Drive? (Pulse-Width Modulation Drive)
#16
Electrical and Electronic / What is a line reactor and why is it needed
January 20, 2019, 06:25:AM
Guys,
What is a line reactor? and why do you need to use them in unison to variable speed drives?
What is a line reactor? and why do you need to use them in unison to variable speed drives?
#17
Electrical and Electronic / What is Auto-Tune and Why Do You Need It
January 20, 2019, 06:22:AM
Guys,
What is Auto-Tune and why would you need to auto-tune a drive after entering the appropriate parameters?
What is Auto-Tune and why would you need to auto-tune a drive after entering the appropriate parameters?
#18
Electrical and Electronic / What is a 4 Quadrant Drive
January 20, 2019, 06:20:AM
Guys,
What is a 4 quadrant drive? Is it similar to a vector drive?
What is a 4 quadrant drive? Is it similar to a vector drive?
#19
Electrical and Electronic / What does Watt Loss mean?
January 19, 2019, 05:58:PM
What does Watt Loss mean? Looking for the actual definition from a technician's standpoint. I was told Watt loss needs to be considered when designing a drive/motor system but I'm not sure how critical it is.
#20
Electrical and Electronic / What is an IGBT?
October 04, 2017, 05:33:AM
What is an IGBT? Looking for a detailed definition of an IGBT.
#21
Electrical and Electronic / What are Harmonics in Industrial Applications?
October 04, 2017, 05:32:AM
What are harmonics in industrial applications? Any takers on this?
#22
Electrical and Electronic / What is an Attenuation Choke?
October 04, 2017, 05:29:AM
Another question for the record... What is an attenuation choke?
#23
Electrical and Electronic / What is a Free-Run Stop?
October 02, 2017, 06:51:PM
What is a Free-Run Stop? It sounds like motor freewheeling. Are there differences between free-run stop and freewheeling?
#24
Electrical and Electronic / What does CE mean on Motors?
October 02, 2017, 06:42:PM
What does CE mean on Motors? Is this similar to UL? I know I've seen it in quite a few places.
#25
Electrical and Electronic / What is a Braking Resistor?
October 02, 2017, 06:40:PM
What is a Braking Resistor? I'm assuming it is added to a motor circuit to help stop a motor.
#26
Electrical and Electronic / What is the definition of base frequency?
October 01, 2017, 08:50:PM
What is the definition of base frequency? I would like to know the relationship between base frequency and motor drives.
#27
Electrical and Electronic / What Does Arrival Frequency Mean?
October 01, 2017, 08:48:PM
What Does Arrival Frequency Mean? Any takers on this? I saw this in my drive startup manual.
#28
Electrical and Electronic / What is Ambient Temperature Pertaining to Electronics?
October 01, 2017, 08:46:PM
What exactly is ambient temperature pertaining to electronics? I'm assuming it just means the temperature surrounding an electronic component.
#29
Troubleshooting 101 / What is the difference between a motor megger and an insulation tester?
September 25, 2015, 03:57:AM
Hello people,
What is the difference between a motor megger and an insulation tester?
I am going to purchase and insulation tester for our maintenance shop. I see both terms used loosely and I really don't think there is a difference, but can anyone detail these two items so I make the right buy. Thanks very much for any insight.
What is the difference between a motor megger and an insulation tester?
I am going to purchase and insulation tester for our maintenance shop. I see both terms used loosely and I really don't think there is a difference, but can anyone detail these two items so I make the right buy. Thanks very much for any insight.
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