HI Larry
I am sorry I misunderstood your query, What you need is a 12 V. coil relay
capable of handeling the DC fan current at 48 volts. I usually go to grainger
for these, 12 volt coil (DC) and contact rating of a single pole single throw
relay, or a two pole, single throw and wire the contact
If your fan is less than 1 amp, like a small computer fan, you can power the
fan directly, else you have a problem, because you have 48 volts and need a 48
volt fan or a voltage coverter 48 to 12 volts. Solar converters makes such an
item aloong with others.
Darryl
--- On Fri, 11/7/08, Larry
Hi Larry,
I suggest you get a 12v fan, make it easy.
jay
peltz power
On Nov 7, 2008, at 1:29 PM, Larry Brown wrote:
Wrenches.
On an upgrade to an existing system, we just installed a Xantrex
XW6048 inverter. We have a 48 volt dc battery box vent fan that we
used to run through the relay
Larry,
Few relays are rated for 48V DC, as that DC voltage is high enough that
relay life is compromised by arcing of the contacts. However, the current of
the Power Vent is so tiny that this shouldn't be an issue. If you have an
old open-coil power relay with a 12V coil lying around the shop, use
Wrenches.
On an upgrade to an existing system, we just installed a Xantrex
XW6048 inverter. We have a 48 volt dc battery box vent fan that we
used to run through the relay on the old SW5548. The XW6048 has a 12
vdc aux output so I assume we need to install a relay to run the fan,
12vdc
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