Behaviour of Fire Resistant Cable Insulation with Different Flame Barriers During Water Immersion

Packa, Juraj; Durman, Vladimir; Sulova, Janka

doi:10.1109/epe.2019.8778165

Cited by 1 publication

(2 citation statements)

References 7 publications

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“…Based on the adopted assumptions, a cable's thermal system can be presented as an electric quadripole consisting of RC elements [17,18]. Thermal resistance is modelled by resistance R, and transverse heat losses are represented by capacitance C [19]. The presented model uses a transmission line variant called the Thomson-Kelvin transmission line, which has the parameters L = G = 0 [20][21][22].…”

Section: Modelling the Heating Up Of Electrical Cablesmentioning

confidence: 99%

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A Method for Determining the Impact of Ambient Temperature on an Electrical Cable during a Fire

Perka

Piwowarski

2021

Energies

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Evaluating environmental conditions that trigger fire-fighting equipment is one of the primary design tasks that have to be taken into account when engineering electrical systems supplying such devices. All of the solutions are aimed at, among others, preserving environmental parameters in a building being on fire for an assumed time and at a level enabling safe evacuation. These parameters include temperature, thermal radiation, visibility range, oxygen concentration, and environmental toxicity. This article presents a new mathematical model for heat exchange between the environment and an electric cable under thermal conditions exceeding permissible values for commonly used non-flammable installation cables. The method of analogy between thermal and electrical systems was adopted for modelling heat flow. Determining how the thermal conductivity of the cable and the thermal capacity of a conductor-insulation system can be applied to calculate the wire temperature depending on the heating time t and distance x from the heat source is discussed. Thermal conductivity and capacity were determined based on experimental tests for halogen-free flame-retardant (HFFR) cables with wire cross-sections of 2.5, 4.0, and 6.0 mm2. The conducted experimental tests enable verifying the results calculated by the mathematical model.

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Section: Modelling the Heating Up Of Electrical Cablesmentioning

confidence: 99%

“…In the case of Equation ( 18), after replacing the voltage value with the temperature value by analogy, we obtain model Equation (19) to calculate the heating temperature of the cable impacted by ambient temperature.…”

Section: Modelling the Heating Up Of Electrical Cablesmentioning

confidence: 99%

A Method for Determining the Impact of Ambient Temperature on an Electrical Cable during a Fire

Perka

Piwowarski

2021

Energies

View full text Add to dashboard Cite

show abstract

Behaviour of Fire Resistant Cable Insulation with Different Flame Barriers During Water Immersion

Cited by 1 publication

References 7 publications

A Method for Determining the Impact of Ambient Temperature on an Electrical Cable during a Fire

A Method for Determining the Impact of Ambient Temperature on an Electrical Cable during a Fire

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