VEGA UES-F-LB-I_N (NPT) - Manual

1
098
91
8_
EN
G.xm
l
2
003
-03-
2
4
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
FN-LB-I Overvoltage suppressor (lightning-
protection barrier)
(red)
GND (green/yellow)
(black)
Composition
½" NPT thread
• 2-wire protection
• For insulated C&I circuits
• Fulfills requirements to 500 V
insulation to earth, housing
components and other intrinsically
safe circuits
• Installation directly in the hazardous
area for protecting the field devices
• Discharge current 10 kA
• Simple installation in the free cable
gland on the field device
• Uninterruptable operation (auto
reset)
By using an F*-LB-I, field devices and
control interface units are safely
protected from voltage surges due to
e. g. flash of lightning, switching
processes etc.).
This is accomplished by the derivation
of the higher current to ground and a
voltage limit during the high level pulse.
The continuous current capacity of the
circuit that is to be protected must not
exceed the rated operational current.
Function