Emc Grounding, Shielding And Noise Protection; Emc Grounding Method - Ametek WDG-V User Manual

EMC Grounding, Shielding and Noise Protection

You must use twisted-pair cable in rigid metal conduit or use twisted pair cable
with an overall braided shield. All cable shields or conduits connecting to the
analyzer unit must be chassis grounded.

EMC Grounding Method

•
Figure 2-14.1.
EMC Grounding, shield ring
method.
•
Figure 2-14.2.
EMC Grounding, ground stud
method.
2-28 | Thermox ® WDG-V / VC / VCM / VM
For EMC purposes, under no circumstances should you leave cable
shields disconnected at one end or both ends of the cable (analyzer or
control unit, or other device).
Shield Ring Method
Connect all shields for that conduit entry (other than power) to a supplied
shield terminal ring (Figure 2-14.1). This shield ring is a stainless steel ring
with a metal tab. Place the shield ring under the conduit nut. Crimp the
shields from all cables for that conduit entry to a 1/4" female quick discon-
nect, then push it onto the tab that sticks out of the conduit shield ring.
Keep shields as short as possible.
SHIELD RING METHOD
Conduit Housing
SHIELD RING METHOD
Conduit Housing
Ground Stud Method
GROUND STUD METHOD
Connect all cable shields for that conduit entry to the grounding stud clos-
est to that conduit entry hole (Figure 2-14.2).
Conduit Housing
GROUND STUD METHOD
Conduit Housing
Shield Terminal Ring
Quick Disconnect (1/4")
Cable Shield(s)
Max. Length 1 inch
Shield Terminal Ring Capacitor
Quick Disconnect (1/4")
Cable Shield(s)
Conduit Nut
Max. Length 1 inch
Capacitor
Conduit Nut
Cable Shield(s)
Max. Length 2 inches
Cable Shield(s)
Capacitor
Conduit Nut
Max. Length 2 inches
Nut
Washer
Capacitor
Conduit Nut
Ring Terminal
Nut
Washer
Ring Terminal
PN 9000-133-VE, Rev U