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TF - Relay

TF - Relay

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This is a old T.F. relay (Time frequency) it works like this:

There is alway's a live current at the pole, but when the power company sends a special frequency trough the net it reacts on it and it will switch a relay that powers the ballast/lamp. nowadays they are verry rare. i think this its ~30 years old, there is also a new type of TF Relay, i will make a picture of it when i got the chance.

DSC001672.JPG tls20.jpg tls20-2.jpg tf-relais.jpg

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Light Information

Manufacturer:P.E.N.

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Filename:tf-relais.jpg
Album name:Maart / At work
Keywords:Gear
File Size:139 KB
Date added:Feb 03, 2006
Dimensions:768 x 1024 pixels
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Santaarnpaal
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Feb 03, 2006 at 09:57 AM Author: Santaarnpaal
Is the T.F. relay also the reason that some lamps start dayburning?
Maart
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Feb 03, 2006 at 10:04 AM Author: Maart
Yes indeed, its over to the Nuon to fix these becouse we offcialy don't have the permission to repair those. most of the old net is fused at 300A or more. so a wrong move can cost your screw-driver it wil just melt/burn away it you make connection to the pole and a phase. (non-isolation screw-driver that is)
Santaarnpaal
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Feb 03, 2006 at 10:09 AM Author: Santaarnpaal
That is very dangerous.
Maart
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Feb 03, 2006 at 10:45 AM Author: Maart
it is yes, becouse of that most of the net is now from our own, only old sections of the city are like this.

The new net is fused mostly at 16 Amp. (max 25 Amp) or else we split the cable.
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