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general informaTion
use of the manual
This Installation and Maintenance manual applies to Pentair Thermal
Management Mineral Insulated (MI) series resistance heating cable systems
installed on thermally insulated pipes and vessels and associated equipment.
In particular it refers to mineral insulated (MI) series heating systems, which
feature a specific power output depending on various design parameters,
in particular, cable length and voltage. This manual provides general
information and shows an overview of the most common installations and
applications on MI as well as typical examples. In any case the information
provided for specific projects will take precedence over this manual. In case of
conflicts, please contact your Pentair Thermal Management representative.
Pentair Thermal Management offers two different cable constructions for
electrical heat-tracing purposes: single conductor cables, which are typically
laid in loop configurations and dual conductor cables, which are typically laid
in single runs.
figure 1: Typical cable construction
Metal sheath
Metal sheath
Insulation
Heating
(magnesium oxide)
conductor(s)
Single-conductor cable
Dual-conductor cable
Various types of the mi bulk heating cables are available:
HCC/HCH: Copper sheathed MI heating cables
HDF/HDC: Cupro-nickel sheathed MI heating cables
HSQ: Stainless steel sheathed MI heating cables
HAx: Alloy 825 sheathed MI heating cables
HIQ: Inconel sheathed MI heating cables
figure 2: Typical heating unit designs
Design type b
Single conductor
Cold lead cable
(standard 2 m)
Gland
Hot/cold joint
Potted seal
300 mm
Heating cable length
Flexible
tail length
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