
AC relays versus DC relays - CR4 Discussion Thread
2007年5月19日 · Good Answer: The coil in a DC relay is wound with wire that has some self resistance, so there isn t a short circuit presented to the supply. Only sufficient current flows so …
Chattering 12v DC Relay When Switching 220v AC? - GlobalSpec
2014年3月6日 · #22 "Re: Chattering 12v DC Relay When Switching 220v AC?" by old salt on 03/06/2014 10:15 PM (score 2)
How to Protect Relay Contacts - CR4 Discussion Thread
2009年6月11日 · Good Answer: antiparallel i.e., oriented against the normal line voltage diode across the relay contacts should suppress the arcing I m afraid not. Flyback diode should be …
Using an AC Rated Contactor for DC Circuits - GlobalSpec
2016年7月20日 · Good Answer: The plant that I worked at used to manufacture DC relays and such. We spent significant effort getting the contact materials sorted for breaking DC. …
Can Relays be Energized Using AC & DC Voltages?
2007年10月9日 · Next in Forum: cable size You might be interested in: AC-DC Adapters , DC to AC Converter Chips , DC-AC Inverters Advertisement
Earth Fault Relay 64 - CR4 Discussion Thread - GlobalSpec
2011年5月8日 · Good Answer: I quote from ANSI Device Function Numbers 64. Ground protective relay is a relay that functions on failure of the insulation of a machine, transformer or …
Easy Way to Determine the Current Load of a Relay Coil
2017年6月16日 · Good Answer: Replying to Forum Thread by wannabecontroller: Use Copy amp Paste to quote the original text. I do understand that in general the relay coil burden is …
Detecting DC Leakage in Grounded Systems - GlobalSpec
2013年1月29日 · #10 "Re: Detecting DC Leakage in Grounded Systems" by olehwi on 01/30/2013 12:29 AM (score 3) #14 "Re: Detecting DC Leakage in Grounded Systems" by jamescardona …
BMR RELAY USED IN DC MOTOR PROTECTION FEEDER - GlobalSpec
2010年5月4日 · BIMETALIC RELAY USED IN DC MOTOR PROTECTION. DC SUPPLY USED 125V.MOTOR DUTU SHORT TIME.
How to connect a temperature PID controller with an external relay
2009年4月18日 · You might be interested in: Electromechanical Relays, Relay Boards (Multiple Relay Modules), Protective Relays and Monitoring Relays