65
Reference Manual
00809-0100-4140, Rev AA
January 2017
4.7.3
Transient protection terminal block grounding
The level detector can withstand electrical transients of the energy level usually
encountered in static discharges or induced switching transients. However, high-energy
transients, such as those induced in wiring from nearby lightning strikes, can damage the
level detector.
A transient protection terminal block can be ordered as an installed option (code T1). The
lightning bolt symbol in identifies the transient protection terminal block.
Note
The transient protection terminal block does not provide transient protection unless the
housing is properly grounded.
4.8
Wiring and power-up
1.
Verify the power supply is disconnected.
2.
Remove the field terminals cover.
In an explosion-proof/flameproof installation, do not remove the level detector
covers when power is applied to the unit. Covers are also not to be removed in
extreme environmental conditions.
3.
Remove the plastic plugs
Содержание Rosemount 2140
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