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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Solid State Relay Differences?
The project I am working on will need a relay for a 1/3 to 1/2 hp 240V
pump motor. Have been trying to do my homework concerning possible solid state relays to use. So far the Teledyne S24A25 (zero crossing turn on) and the Crydom A2425-10 (random turn on) seem quite similar except for the difference in turn on. Am wondering how much difference this actually makes? Welcome any suggestions for these or other suitable solid state relays. Thanks Ken |
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"Michael Gray" wrote in message ... On 26 Aug 2005 11:49:39 -0700, wrote: The project I am working on will need a relay for a 1/3 to 1/2 hp 240V pump motor. Have been trying to do my homework concerning possible solid state relays to use. So far the Teledyne S24A25 (zero crossing turn on) and the Crydom A2425-10 (random turn on) seem quite similar except for the difference in turn on. Am wondering how much difference this actually makes? Welcome any suggestions for these or other suitable solid state relays. Thanks Ken The principal difference is the amount of RF noise that is generated. And for an inductive load like a motor it's a particularly good idea to use one with zero crossing. |
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Use the Zero Crossover one...I have been using them
on 1/2hp motors for 8 years with no failure and they are outside where the temps are +30c in the summer to -20c in the winter. kip "James Sweet" wrote in message news:E8eQe.15165$Bc2.9331@trnddc06... "Michael Gray" wrote in message ... On 26 Aug 2005 11:49:39 -0700, wrote: The project I am working on will need a relay for a 1/3 to 1/2 hp 240V pump motor. Have been trying to do my homework concerning possible solid state relays to use. So far the Teledyne S24A25 (zero crossing turn on) and the Crydom A2425-10 (random turn on) seem quite similar except for the difference in turn on. Am wondering how much difference this actually makes? Welcome any suggestions for these or other suitable solid state relays. Thanks Ken The principal difference is the amount of RF noise that is generated. And for an inductive load like a motor it's a particularly good idea to use one with zero crossing. |
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