[Boatanchors] WESTERN ELECTRIC 276k MERCURY OCTAL RELAY

[eldim at att.net]

Hello Bob & Crew,
Bob, where did you find the specs on the WE 276K Relay?
I'd love to find an engineering spec on these relays.  The Red label I have been told has silver contacts, or possibly even Tungsten contacts.  The Blue label I am told has platinum contacts.
I have seen a "WARNING" LABEL on some of these metal can relays stating "DO NOT OPEN-CONTENTS UNDER EXTREME PRESSURE". 
The Operating position of Mecury Relays is definitely a limiting factor in their use. I also pretty sure that they are not recommended for high vibration applications.
As far as noise and arcing are concerned they are hard to out perform by other relays.
73,
Glen Galati, KA7BOJ
Tacoma, WA
eldim at att.net



-------------- Original message from Bob Kulow <kulow at epix.net>: -------------- 


> 
> >Does anyone have spec's for a Western Electric 276k octal relay? 
> >Looks just like the one out of aHallicrafters keyer. 
> 
> 276K: 
> Coil 400 ohms, 23,400 turns 
> Coil to pins 7 & 8 
> When relay is operated, moving contact bridges pins 1 & 2. 
> Moving contact is pin 3 
> When relay is not operated, moving contact bridges pins 4 & 5. 
> 
> Per note: "Adjusted for approximately equal dwell on front and back 
> contacts when 18.5 volts RMS 60 cps sinusoidal voltage is applied to winding. 
> 
> No mention of operate and release currents, though. 
> 
> 73 
> Bob WA2UEH 
> 
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