Hubbell Utility socket, found in Galleys
Thread Starter
SpaceRanger
Joined: May 1999
Posts: 213
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From: Samsonite
Hubbell Utility socket, found in Galleys
Hubbell Utility socket, found in Galleys - carries 115VAC 400Hz. But where does one find a converter, or plug which fits?
Think Hubbell First lists many different plugs but most look like normal mains types.
Think Hubbell First lists many different plugs but most look like normal mains types.
Thread Starter
SpaceRanger
Joined: May 1999
Posts: 213
Likes: 0
From: Samsonite
Just for powering a laptop when occasionally deadheading.
If this is aviation grade stuff, I imagine it would cost dearly! Too bad my old fits-it-all converter does not fit this plug. Tried the one in the washroom, and it was disconnected (converted freighter ...)
If this is aviation grade stuff, I imagine it would cost dearly! Too bad my old fits-it-all converter does not fit this plug. Tried the one in the washroom, and it was disconnected (converted freighter ...)
Joined: Jan 2003
Aviation Qualifications: ATPL
Posts: 279
Likes: 17
From: Europe
I've seen colleagues plug their laptops to the cockpit outlet and 400Hz didn't seem to be an issue.
Joined: Sep 1998
Posts: 1,615
Likes: 1
From: wherever
Using 400Hz through a tru rated for 50-60 Hz will result in low output voltage and/or high tru temperature. One is bad for your devices battery the other is bad for your tru(power supply).
There is a reason they put the frequency range on the back of power transformers.
There is a reason they put the frequency range on the back of power transformers.
Joined: Feb 2005
Posts: 4,581
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From: flyover country USA
During my flt ops engr career, I regularly charged my TI-58C handheld (I'm dating myself...) using a 400hz source near the jumpseat. The charger was a simple transformer-rectifier device, and in general, transformers designed for 50-60 hz are perfectly happy (cooler than normal) on 400hz.
The converse IS NOT TRUE - there's not enough iron in a 400hz transformer to permit it to run at lower frequency. 400 hz transformers (& motors, generators, etc), because of their lighter weight, are popular in aircraft.
The switching-type power device for a laptop first rectifies the incoming AC to DC to drive the switching semiconductors. It should not matter what the power frequency is; 400 should be as good (or better) than 50-60 hz.
The converse IS NOT TRUE - there's not enough iron in a 400hz transformer to permit it to run at lower frequency. 400 hz transformers (& motors, generators, etc), because of their lighter weight, are popular in aircraft.
The switching-type power device for a laptop first rectifies the incoming AC to DC to drive the switching semiconductors. It should not matter what the power frequency is; 400 should be as good (or better) than 50-60 hz.
