Using Electrical Feedthroughs

Using Electrical Feedthroughs
Electrical feedthroughs will give long and reliable service if they are properly treated. They must be stored carefully & kept free from damage. When they are baked they must have their temperature accurately controlled. During bakeout we recommend that you do not cover the external surface of the feedthrough with foil as the aluminium can rub off onto the ceramic and cause an electrical short. It is important not to exceed the feedthrough temperature and power ratings as it can damage the feedthrough or cause vacuum leaks. For each of our electrical feedthroughs we have a maximum recommended temperature ramp rate of 25°C per minute which is the maximum rate at which the temperature can either rise or fall during bakeout. It is equally important to consider the electrical feedthroughs when your system has stopped baking, opening the bakeout ovens with the system still hot can cause unacceptable cooling temperature ramp rates. Always use an annealed gasket when mounting a ceramic pin type of feedthrough as it reduces the mechanical stresses seen by the ceramic, tighten the mounting bolts equally during several passes. Use a torque wrench to ensure equal sealing torques. Never use an electrical feedthrough that appears to be, or is known to be damaged. the electrical rating of the feedthrough may have changed which could have serious consequences. Remember to remove any plugs that are not bakeable before baking the system !! Follow the above recommendations and you should see many years of service from your VG feedthroughs.

Spares and Accessories EFT Series

of Electrical Feedthroughs

Order Code	Copper Gasket	Viton Gasket	Bolt š Set	Spare Connector ˛
Order Code	Copper Gasket	Viton Gasket	Bolt š Set	Internal	External
ZEFT920	ZCU19	ZVIT19	ZM4B20	-	-
ZEFT922	ZCU19	ZVIT19	ZM4B20	ZEFTBC	ZEFTBC [+]
ZEFT922I	ZCU19	ZVIT19	ZM4B20	-	XPLU22 [Power] & XPLU23 [Type K T/C]
ZEFT922S	ZCU19	ZVIT19	ZM4B20	ZEFTBC	XPLU22 [Power] & XPLU23 [Type K T/C]
ZEFT922T	ZCU19	ZVIT19	ZM4B20	ZEFTBC	XPLU22 [Power] & XPLU23 [Type K T/C]
ZEFT924	ZCU19	ZVIT19	ZM4B20	ZEFTBC	ZEFTBC
ZEFT924I	ZCU19	ZVIT19	ZM4B20	-	ZEFTBC [Type K T/C]
ZEFT924S	ZCU19	ZVIT19	ZM4B20	-	ZPLU23 [Type K T/C]
ZEFT924T	ZCU19	ZVIT19	ZM4B20	-	ZPLU23 [Type K T/C]
ZEFT924X	ZCU19	ZVIT19	ZM4B20	-	ZPLU23 [Type K T/C]
ZEFT940	ZCU19	ZVIT19	ZM4B20	ZEFTBC [+]	ZEFTBC [+]
ZEFT9H4I	ZCU19	ZVIT19	ZM4B20	ZEFTBC	XPLU15
ZEFT9H4S	ZCU19	ZVIT19	ZM4B20	ZEFTBC	XPLU15
ZEFT920	ZCU19	ZVIT19	ZM4B20	-	-
ZEFT9H4T	ZCU19	ZVIT19	ZM4B20	ZEFTBC	XPLU15
ZEFT9H4X	ZCU19	ZVIT19	ZM4B20	ZEFTBC	XPLU15
ZEFT96	ZCU19	ZVIT19	ZM4B20	-	-
ZEFT16	ZCUA38	ZVIT38	ZM6B35	ZEFT95C	ZEFT17SK
ZEFT16NW	ZCUA38	ZVIT38	ZM6B35	ZEFT95C	ZEFT17SK
ZEFT17	ZCUA38	ZVIT38	ZM6B35	ZEFT95C	ZEFT17SK
ZEFT17NW	ZCUA38	ZVIT38	ZM6B35	ZEFT95C	ZEFT17SK
ZEFT19	ZCUA38	ZVIT38	ZM6B35	ZEFT95C	-
ZEFT19SK	-	ZSKF40IR	ZSKF40C	ZEFT19C	ZEFT19C
ZEFT35	ZCU38	ZVIT38	ZM6B35	-	-
ZEFT52	ZCU64	ZVIT64	ZM8B45	-	-
ZEFT91A	ZCU19	ZVIT19	ZM4B20	M5 Nut & Washer	M5 Nut & Washer
ZEFT911	ZCU19	ZVIT19	ZM4B20	-	-
ZEFT94	ZCU19	ZVIT19	ZM4B20	-	-
ZEFT34A	ZCU38	ZVIT38	ZM6B35	M5 Nut & Washer	M5 Nut & Washer
ZEFT3A	ZCU38	ZVIT38	ZM6B35	M5 Nut & Washer	M5 Nut & Washer
ZEFT13	ZCU38	ZVIT38	ZM6B35	-	-
ZEFT9	ZCU38	ZVIT38	ZM6B35	-	-
ZEFT6	ZCU38	ZVIT38	ZM6B35	-	-
ZEFT10	ZCU38	ZVIT38	ZM6B35	ź" UNF Nut	-
ZEFT1AN	Weld Fitting		-	M5 Nut & Washer	M5 Nut & Washer

1. Assumes EFT mounted onto standard (i.e. not tapped or double sided] flange
2. Where no connectors are supplied with a feedthrough, these are suggested as possible items to use. It is the responsibility of the end user to ensure that when wired and configured, the feedthrough and associated connector meets all local health and safety directives and standards.