Use In Areas Requiring Ignition Protection; Approvals; Level Of Protection; Electrostatic Charging - ABB TTH300 Instructions Manual

Use in areas requiring ignition protection

2 Use in areas requiring ignition protection
Special regulations must be observed in explosion-protection zones for the auxiliary power
connection, signal inputs/outputs and ground connection. Information on ignition protection in
the separate chapters must be observed.
Caution! Potential damage to parts!
All parts must be installed in accordance with manufacturer information and relevant
standards and regulations.
Startup and operation must comply with EN 600790-14 (Installation of equipment in potentially
explosive atmospheres).
2.1

Approvals

The approvals for use of the TTH300 temperature transmitter in explosion-protection areas can
be found in the section "Approvals".
2.2

Level of protection

The adapters for the model TTH300-E1 temperature transmitter and the HMI ignition-proof type
A LC display must be installed with an IP20 level of protection in accordance with
IEC 60529:1989.
2.3

Electrostatic charging

When using the transmitter in zone 0, make sure you prevent unapproved electrostatic charging
of the model TTH300-E1 temperature transmitter und the HMI ignition-proof type A LC display
(observe warnings on the system).
2.4

Ground

If for functional reasons, the intrinsically safe circuit has to be grounded by connection to the
equipotential bonding system, it may only be grounded at a single location.
2.5

Interconnection

If transmitters are operated in an intrinsically safe circuit, proof that the interconnection is
intrinsically safe must by provided in accordance with DIN VDE 0165/08.98 (EN 60 079-14/1997
and IEC 60 079-14/1996). In general, intrinsically safe circuits require proof of interconnection.
2.6

Configuration

TTH300-E1 temperature transmitters can be installed in the explosion-protection area in
compliance with the proof of interconnection and directly in the explosion-protection area using
approved handheld HART-terminals as well as by coupling an ignition-proof modem to the
circuit outside the explosion-protection area.
2.7

Explosion-protection relevant information

For additional information, refer to the section "Explosion-protection relevant information" or the
data sheet.
6 - EN TTH300 CI/TTH300-EN