DRAWING NUMBER
14000
DATE
August
2016
DRAG CHAIN, GROUNDING, 1 MEGOHM
Description
The Desco conductive drag chain is a low cost alternative
to conductive casters to ground mobile equipment (such
as carts and chairs) to ESD flooring. Install by attaching
the 7mm socket to a snap on the item to be grounded,
however, all components of the cart or chair must be
conductive.
Specifications
1 megohm resistor
24" long
Chain constructed of 302 stainless steel
© 2016 DESCO INDUSTRIES INC.
Employee Owned
DESCO WEST: 3651 WALNUT AVE., CHINO, CA 91710 WEB SITE: Desco.com
PHONE (909) 627-8178
DESCO EAST: ONE COLGATE WAY, CANTON, MA 02021-1407
PHONE (781) 821-8370
Specications and procedures subject to change without notice.
Notes:
Per ESD Handbook ESD TR 20.20 Mobile Equipment section 5.3.8: “Mobile
equipment [carts] can be grounded directly to an ESD protective oor
materials via drag chains, conductive wheel(s) and cable or ball assemblies.
When mobile equipment is grounded through oor materials it is necessary
to ensure that there is a path to ground from the surface (where the
unprotected parts are stored) to ground no matter which connection method
is chosen. One of the benets of this type of system is that the connection
to ground is constant and normally does not require operator intervention.
One of the drawbacks is that the connection to ground can be lost if a solid
contact with the ESD oor material is not achieved. Dust and dirt buildup
(i.e. on the surface that contains ESDS parts, the oor and/or the grounding
mechanism), can result in a loss of the electrical connection between the
ESDS item and ground.“
Per ESD Handbook ESD TR20.20 Seating section 5.3.5.2 Types and
Selection “[ESD] chairs accomplish this by using conductive bers woven
into the fabric. The fabric is then connected through the components of the
chair, through the cylinder, base and casters (or drag chain) to the oor.”
Made in the
United States of America
Cart shown for
illustration only.
Unless specied tolerance is ± 10%
