Raychem HSQ1M250 Stainless Steel Sheathed Series Heating Cable 250 ?/km ATEX
Quick Find: 9535
Part Code: HSQ1M250
Raychem HSQ mineral insulated (MI) Stainless steel series heating cables are suited for use in hazardous areas. The Stainless steel sheath offers excellent corrosive properties against a wide range of organic acids and alkalis in combination with a high temperature withstand capability.
HSQ cables are typically used in bitumen plants, gas plants, oil reﬁneries, reactors and vessels, sodium loops and a wide variety of other heat-tracing applications where temperature resistance, power output and durability are paramount. The heating cables can be used for exposure temperatures up to 700°C and a typical power output up to 150 W/m. Higher temperatures and power outputs can be achieved, contact Pentair for assistance.
The heating cables are offered as bulk cables as well as factory-terminated heating units employing brazing or laser welding techniques to ensure optimum quality of the connections. The offering is completed with a full range of components for installation, connection and splicing of the heating cables.
- Hazardous areas, Zone 1 or Zone 2 (Gas) or Zone 21 or Zone 22 (Dust)
- Ordinary areas
System (Heating Units):
- II 2GD Ex e II T6 to T1 Ex tD A21 IP6X
- Actual T class temperature determined by design
- II 2G Ex e II
|Order Reference||Nominal Resistance|
[Ω/km @ 20°C]
[x 10-3 /K]
|Max Coil Length|
Brass glands are standard on all heating units. Other materials are possible, contact Pentair for more information.
Delivery length of bulk cable on coil depends on type of resistance and is limited by max. coil length as indicated in the table on top. Factory terminated elements are limited by a max. weight of 50kg, however to ensure practical and safe on-site handling, it is strongly recommended to limit element lengths to 25 - 30kg. Not all resistances are standard items and as such may not be in stock. Contact Pentair to conﬁrm lead time. Pentair requires the use of a 30 mA residual current device to provide maximum safety and protection from ﬁre.
Where design results in higher leakage current, the preferred trip level for adjustable devices is 30 mA above any inherent capacitive leakage characteristic of the heater as speciﬁed by the trace heater supplier or alternatively, the next common available trip level for non adjustable devices, with a maximum of 300 mA. All safety aspects need to be proven.
Also refer to the components section for more details on heating units, accessories and nomenclatures.
|Cable Sheath Material||321 Stainless Steel|
|Earth Leakage||3 mA/100m (Nominal at 20°C, 230 Vac, 50-60 Hz)|
|Max Exposure Temp||700°C (Laser Welded Heating Units)|
|Max Exposure Temp||450°C (Brazed Heating Units)|
|Max Exposure Temp||700°C (Heating Cables)|
|Min Bending Radius||6 x outer diameter at -60°C|
|Min Cable Spacing||25mm for hazardous Areas|
|Minimum installation temperature||-60 °C|