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Federal Signal 500T Air Raid Siren on New Years eve/day

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Uploaded on Jan 3, 2008

Please check that your speakers are turned all the way up to ensure the closest reproduction of the sirens audio ;^) Please don't, it's REALLY LOUD!


A few facts... The siren was rescued from a surplus equipment site. Weighs in at about 650Lbs, has a 10HP 3 phase motor and rotates at nearly 3600RPM.

The first part of the video is at the "location" where is was first fired up. Here we had access to the correct current requirements. 3 phase 240, and all the juice in the city. The siren takes just about 5 seconds from stop to full run.

Next, a "few" miles away, is where the siren was located for the new years festivities. After a brief tour of the site, we test the beast in the afternoon of December 31st to verify that the celebration would go off without a hitch.

At startup, the 500T and the phase converter draws 125Amps at 240 VAC. That was enough to dim the lights in the house and outside lighting (watch closely during startup). Even the main service disconnect at the meter buzzes just when the phase converter is started!

The siren was connected to an air conditioning electrical disconnect, thru a phase converter and then through its original control box. If you are not familiar with the technology, the phase converter 'creates' the third phase of a two phase supply. Most homes (and the air conditioning circuit that is outside) are only a 2 phase, 240VAC supply. The motor on the siren is 3 phase, thus the phase converter makes the third properly timed cycle for the motor to operate correctly.

After the testing, it was time for action! Having everything started up and ready to go, 2 atomic clocks and WWV on the radio, the three troublemakers knew when to wake the valley up and ring in the new year!!

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