>> ESRS heating cable is a parallel circuit heating cable with self-limiting characteristics designed for Frost Protection of Pipework.
As the pipe temperature falls under no-flow conditions or due to the decrease in external or internal temperature, the electrical conductivity of the semi-conductive polymer core increases, causing the tape’s output to increase.
As the pipe temperature increases under flow conditions, or as a result of increasing external or internal temperature, the conductivity reduces and output decreases.
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 thermoplastic outer sheath over the earth screen.
|Conductors||Tinned Copper (7 X 0,32) 0,56mm²|
|Outer sheath||Thermo-plastic elastomer|
|Earth protection||Foil jacket with multi strand earth lead|
|Max temp||60ºC (energised)|
|Min bend radius||27mm|
|Circuit breaker sizing (Type C to EN60898)|
|Type||Start-up temp (ºC)||Max circuit length vs. circuitbreaker size (m)|
To calculate heat loss per meter of pipe:
k = Thermal Conductivity of insulation layer at its
Tp= Maintain Temperature
Ta= MinimumAmbient temp
D1= Inside Diameter of theInsulation Layer
D2= OutsideDiameter of the InsulationLayer
|Mean temperature °C||10||50||100||200|