Timeline for Designing a AC Snubber circuit for 2 hp using AC snubber
Current License: CC BY-SA 4.0
21 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 12, 2022 at 8:55 | comment | added | kdm6389 | please report that the design worked or not? can't you use BAT16 to replace realy (SSR) ? | |
| Mar 11, 2021 at 5:31 | answer | added | Ray | timeline score: 0 | |
| Jan 14, 2021 at 8:01 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Sep 9, 2020 at 4:07 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| May 11, 2020 at 20:04 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jan 12, 2020 at 14:03 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Sep 17, 2019 at 22:02 | comment | added | user80875 | Yes. A correctly rated SSR should eliminate most EMI concern. There is the possibility of inductively coupled 60 Hz from the power lines if they are too close to the control circuits. Also noise from other equipment connected to 240 V. | |
| Sep 17, 2019 at 19:10 | comment | added | ANUNAY SINHA | Okay thank you. Is there something else i can to reduce EMI apart from what you have said. Using a correctly rated SSR with a heat sink would negate this whole issue right? | |
| Sep 17, 2019 at 18:41 | comment | added | user80875 | If you have contactors with 220-240 VAC coils, they can be used. The relay selected to energize the contactor coil seems to be adequate. You can not really eliminate electromagnetic interference from switching the motor, so you need to protect tha Arduino as I described. | |
| Sep 17, 2019 at 18:30 | answer | added | D.A.S. | timeline score: 0 | |
| Sep 17, 2019 at 18:30 | answer | added | Harper - Reinstate Monica | timeline score: 2 | |
| Sep 17, 2019 at 18:12 | comment | added | ANUNAY SINHA | Okay. so are you suggesting that i get a contactor which can be activated at lower voltages and is properly rated for my motor? because since right now my contactors that have been working fine, require 220-240 VAC to get activated so i will have to use 240 VAC relay (that connects to arduino and contactor) no? Thank you | |
| Sep 17, 2019 at 17:39 | comment | added | user80875 | The RC shown in the diagram should be across the contactor coil, not across the relay contacts. You probably don't need the varistor. You seem to show a 240 volt relay coil. Is that correct, if so, a lower voltage would be better. If the contactor is properly rated for the motor, you should not need a snubber across the motor. The contactor and motor wiring need to be separated from the Arduino, preferably in a separate metal box. | |
| Sep 17, 2019 at 17:27 | comment | added | ANUNAY SINHA | I understand this is not the right way of asking the question and instead i should have asked if i need a snubber or not? My apologies. | |
| Sep 17, 2019 at 17:21 | comment | added | ANUNAY SINHA | There is a contactor installed to control the motor: something like following: amazon.in/25Amps-4Pole-Contactor-240V-Catno/dp/B07N5LY8JG/… I am using the following relay: I dont seem to able to find the inductive current rating of the 10A relay. The installed contactor has been working fine using NO and NC switches for past 2 years. The 10A relay is: amazon.in/Generic-Channel-Relay-Module-Electronic/dp/B00C59NOHK/… Thank you for your help | |
| Sep 17, 2019 at 17:16 | comment | added | winny | XY problem. What is the motor or inductive current rating of the relay? | |
| Sep 17, 2019 at 17:14 | comment | added | Voltage Spike♦ | Are you using an SSR or a relay? | |
| Sep 17, 2019 at 17:04 | comment | added | ANUNAY SINHA | From what i understood, motor being an inductive load, when switched on or off will produce a voltage proportional to the rate of change of current which could be very high. Same would also be experienced at the other end when the coil of contactor discharges. no? So to protect my 10A relay and arduino? | |
| Sep 17, 2019 at 16:59 | comment | added | winny | Why the snubber? | |
| Sep 17, 2019 at 16:50 | review | First posts | |||
| Sep 17, 2019 at 17:56 | |||||
| Sep 17, 2019 at 16:49 | history | asked | ANUNAY SINHA | CC BY-SA 4.0 |