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FBTXH Heating Cable

Self-regulating heating tape – For frost protection and temperature maintaining in hazardous areas

Heating Calbe – Data Sheet

>> This is a parallel resistance, cut to length on site self-regulating heating tape cable designed for frost protection, process pipework maintaining and hot water temperature maintaining.

The heating tape adjusts heat output to equal the heat loss from the pipe work. As pipe temperature falls under no-flow conditions or due to decreases in external or internal temperature, output increases. As the pipe temperature increases under flow conditions or as a result of increasing external or internal temperature so output decreases.

Construction

The heating tape has a core comprising two bus-wire conductors contained within an extruded semi-conductive self-limiting heater core with an outer insulating polyolefin sheath.
The tape has an earth protection screen in the form of a Foil Jacket covering a multi strand earth lead.
The tape is finished with a further protective PFA sheath over the earth screen.
The heating tape is certified for use in hazardous areas.

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FBTXH Heating Cable

Range
Type Volts Watt/m
@10°C
Max circuit length (m)
16A CB 20A CB
FBTXH 20 230 20 135 160
FBTXH 30 230 30 85 114
FBTXH 45 230 45 70 82
FBTXH 60 230 60 50 64
 Specification
Conductors Copper stranded flexible – 1,23mm²
Core Semi-conductive polymer
Outer sheath PFA
Width 12,4mm
Withstand temp 200ºC Un-energised
120ºC Energised
Thickness 5,0 mm
Braid Cu nickel-plated
Over sheath PFA
Weight 120g/m
Output

output-fbtxh

Heat losses

To calculate heat loss per metre of pipe:

Heat losses W/m = Δt x ke x Loss factor

Δt = Pipe temp. – Ambient temp.

ke = Thermal conductivity

Pipe NB (mm) Thermal insulation thickness (mm)
25 38 50
13 5,16 4,13 3,58
25 6,91 5,36 4,56
38 8,74 6,63 5,54
50 10,28 7,69 6,36
75 13,90 10,15 8,24
100 17,08 12,30 9,88
150 23,82 16,82 13,30

Loss factor (According to BS 6351)

Thermal Conductivity (ke)for Mineral/Glass fiber
Δt°C 30 40 60 80 100 120 140 160
Ke 0,034 0,035 0,036 0,037 0,038 0,040 0,042 0,044

To comply with BS 6351 allowance should be taken of maximum heater resistance tolerance (± 10%) and voltage variation (± 6%) = 1,1/ (0,94)² = 1,25 x Heat loss.

A further design factor of 10% may be added.

IHP works together with many leading industrial companies in Europe. As a partner and supplier, we are known for our flexibility and our high quality products and services. IHP has a business valued model and creates successful long-term relationships.

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