# 3 phase

1. ### 3 phase motor emergency stop

Hey, I am working on a project that requires a 3 phase AC motor using a speed controller that has a 1 phase input and a 3 phase output. I am trying to wire an emergency button that will stop it immediately or quickly as possible. Do yall have any suggestions on parts or wiring diagrams? thanks.
2. ### Measuring Voltage Coming out of an ESC

Hello, I have an ESC which is rated for 40A. I want to make sure that the 3 phase motor to which it is connected is getting sufficient voltage. How do I connect my multimeter to the ESC to measure voltage correctly? Should I just run the ESC at 80% PWM and measure 2 of the 3 outputs from the...
3. ### Does a 3-phase phase-locked loop diagram possible for an AC to DC battery charger?

Hi there, In order to achieve unity power factor control, the phase of the AC voltage needs to be obtained. The phase is obtained through a phase-locked loop (PLL). Take a look for single phase control structure of the PLL , For such similar way I want to mention some of 3-phase equations...
4. ### What can burn out a 3 phase motor ? Can turning it on and off be effective?

Hello everyone ... For a project, I want to make an escalator smart with a number of PIR sensors So that the escalator turns off after one minute of not using it And for example, turn on 20 seconds later If this cycle continues, can it damage the engine? The specifications of this motor are 9 kW...
5. ### how calculate the energy use for starting a 3 phase motor until return to normal work?

hello everyone , for a project i must calculate the exact energy that used for start of motor until the motor return to normal work in other words how much energy use for normal work of this motor equals the starting energy ? the motor is 3 phase 20 Ampere 9KW unfortunately i have no complete...
6. ### running a 3 phase fryer from a 1 phase supply

Asking for some advice as I can't seem to find anything. I have been asked if there's any way to run a 3 phase fryer from a single-phase supply. I've attached some images below. any idea for rewiring would be appreciated I looked at a variable frequency drive but to my understanding, it...