60 VAC/VDC rating on contacts
60 VAC/VDC rating on contacts
(OP)
I was recently assigned to install an oil/water sensor and a normally closed valve that the oil sensor holds open.
The cut sheet says the dry contacts are good for 60VAC/DC. Is this a common rating? I know SCADA often uses 24 or 48 VDC, but what type of application uses less than 120 VAC?
Now instead of just one 120VAC circuit with the 120VAC sensor, a 120 VAC interposing relay and the 120VACmotor operated valve, I will also need a 48VDC circuit run to the oil sensor.
The cut sheet says the dry contacts are good for 60VAC/DC. Is this a common rating? I know SCADA often uses 24 or 48 VDC, but what type of application uses less than 120 VAC?
Now instead of just one 120VAC circuit with the 120VAC sensor, a 120 VAC interposing relay and the 120VACmotor operated valve, I will also need a 48VDC circuit run to the oil sensor.






RE: 60 VAC/VDC rating on contacts
Those ratings are for the SCADA PLC realm.
I would've expected something up for 60VDC to handle 120VAC without a problem. Not this time though.
Are you sure the oil sensor can't run on 12 or 24VDC - something you are likely to have available?
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: 60 VAC/VDC rating on contacts
RE: 60 VAC/VDC rating on contacts
Get used to it.
JRaef.com
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