Design Guide for Hazardous / Industrial
Self-regulating trace heating systems
21-5400-7D0001/-
05/2023-EHT-466854
Notice Technical data subject to change without notice.
No claims for damage arising from alternations, errors or misprints shall be allowed.
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Operation is allowed with
one kind of heating cable in each heating circuit only
respect to the maximum heating circuit length
installed earth fault equipment protection and overcurrent protection
for each branch circuit
The approval and marking of the respective heating system, the tech-
nical data of the BARTEC Self-regulating trace heating cables and the
applicable documents must be observed.
For use with electrical systems, the relevant installation and operating
conditions (e.g. according to ATEX Directive 2014/34/EU,
EN 60079-0, EN 60079-14, EN 60079-17, EN 60079-30-2 and any
other relevant national standards) must be observed.
Specific Conditions of Use
For Specific Conditions of use see documents of components, the
system is built with, as it is:
All power and data line cable entries to the trace heater boxes shall
be installed with Ex eb or Ex tb cable glands or blanking elements
providing a minimum ingress protection of IP66.
Supply cables and power cable entry glands shall be selected per
manufacturer’s installation instructions for appropriate conductor size
and temperature range (see chapter “Checklist customized entry
port”).
Trace heater boxes, Aluminium housing type 07-5180-****/****
The enclosure must not be used in areas affected by charge-produc-
ing processes, mechanical friction and separation processes, electron
emission (e.g. in the vicinity of electrostatic coating equipment), and
pneumatically conveyed dust.
Trace heater boxes, Cable entries PS-120-* type 27-59-G2-*
For the Box pedestal PS-120-* measures shall be taken to avoid elec-
trostatic charging hazards.
PBTW, Ex d Temperature Switch Type 07-6D**-****/****
The width of gap of the Ex d Temperature Switch is below the maxi-
mum values according to IEC 60079 1. Contact BARTEC for mainte-
nance or repair of Ex d Temperature Switch.
PBTW, PBTC
Shall be applied for maintenance temperature control only.
The capillary of the PBTW and PT100 wiring shall be part of a fixed
installation and shall be effectively clamped to prevent pulling or twist-
ing.
Foreseeable Misuse
The following activities are a misuse of the product and are not al-
lowed:
Use of the BARTEC Self-regulating trace heating cables for pur-
poses other than those described in the intended use
Installation, commissioning, operation, maintenance or disposal by
unauthorised or unqualified personnel
Work on live parts or circuits without switching off the BARTEC
Self-regulating trace heating cables or the system
Commissioning of damaged or faulty system components or incom-
plete installation.
Recommisioning after dismounting the heating grommet without re-
placing the heating grommet.
Unauthorized technical modification of the BARTEC Self-regulating
trace heating cables
Personal Qualification
For system planning, installation, commissioning, operation and mainte-
nance observe the requirements for personnel qualification according to
DIN/EN 60079-14, note appendix A.
Applicability
This document covers the design of BARTEC HSB+ and HTSB trace heating systems. It includes mainly engineering procedures for certified
components as set out in section System design.
The manuals shipped together with the individual components will contain additional relevant content to this document.
Relevancy of individual sections of this document is highlighted at the beginning of each section.
The self-regulating trace heating system type 27-54** is a trace heating system for fixed installation in hazardous areas with explosive gas, va-
pour or dust atmosphere. It is to be used for frost protection, to raise or maintain the temperature of a workpiece where it is externally applied.
CAUTION
The trace heating system is only applicable in case of workpiece temperature is higher than the layout ambient temperature.
WARNING
Risk of fire or electrical shock.
Risk of lost explosion protection.
The maximum Trace heater stady-state current is to be observed!
Protecting of all components of the Trace heater Installation Enclosure against over-heat is controlled by maximum Heating circuit length, depending
on design parameters.
Observe the trace heater stady state current listed on table “Installation Enclosures for Trace Heating as Power Box kit”!
