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This Document Has Been Superseded
A newer publication replaces it: BSI BS EN 62395-2
Electrical resistance trace heating systems for industrial and commercial applications -- Application guide for system design, installation and maintenance
This part of IEC 62395 provides detailed recommendations for the system design, installation, maintenance and repair of electrical resistance trace heating systems in industrial and commercial applications. This technical specification does not include or provide for any applications in potentially explosive atmospheres.
This specification pertains to trace heating systems that may comprise either factory constructed or field (work-site) assembled units, and which may be series heater cables, parallel heater cables, heater pads or heater panels that have been assembled and/or terminated in accordance with the manufacturer’s instructions for connection to voltage supplies up to and including 450 V/750 V.
This Technical specification does not cover induction, impedance or skin effect heating.
Trace heating systems can be grouped into different types of installations. These are characterized by different requirements for testing and are usually certified for a specific type of installation or application. Typical applications for the different types of installation are as follows:
Installations of trace heating on pipes, vessels and associated equipment. Applications include:
freeze protection and temperature maintenance;
hot water lines;
oil and chemical lines;
sprinkler systems.
Outdoor exposed area installations of trace heating. Applications include:
roof de-icing;
gutter and downspout de-icing;
catch basins and drains;
rail heating.
Installation with embedded trace heating. Applications include:
snow melting;
floor warming;
frost heave prevention;
underground thermal energy storage systems;
door frames.
Installations with trace heating inside conduit or piping. Applications include:
snow melting – in conduit;
floor warming – in conduit;
frost heave prevention – in conduit;
underground thermal energy storage systems – in conduit;
internal trace heating of potable water lines;
enclosed drains and culverts.
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