Grounding; Protective Grounding; Integrated Lightning Protection (Optional) - ABB 2600T Series Instruction Manual

32 2 6 0 0 T S E R I E S | P R E S S U R E T R A N S M I T T E R S | O I/ 2 6 6/ F F - E N R E V. E

Grounding

A terminal is available on both the outside of the housing and in
the plug for grounding (PE) the transmitter. Both terminals are
electrically connected to one another.

Protective Grounding

All transmitters are supplied with an external ground
connection for protective grounding.
Wire this ground connection to a suitable earth ground. For a
transmitter measuring loop an earth ground should maintain a
resistance of 5 ohms or less.
Use a heavy duty conductor, at least 15 AWG / 1,6 mm2 Ø.
Figure 40: Ground connection on transmitter housing
WARNING - GENERAL RISK
A protective grounding connection is absolutely necessary
to insure personnel protection, to protect against surge (in
case of installation of this option) and to prevent explosions
in potentially explosive environment.

Integrated lightning protection (optional)

The transmitter housing must be connected using the
grounding terminal (PA), by means of a short connection with
the equipotential bonding. Equipotential bonding minimum
diameter of 4 mm2 (AWG 12) is required throughout the cable
routing area.
In the case of transmitters with integrated lightning protection
(optional), the intrinsically safe circuit is connected to the
equipotential bonding for safety reasons.
IMPORTANT
Test voltage withstand capability can no longer be ensured
when this protective circuit is used.