Heating cables
High-Temperature Self-Regulating Heating Cable BTX up to +250 °C
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Sigmian BTX is an ATEX-certified high-temperature self-regulating industrial heating cable for frost protection and temperature maintenance on pipelines, tanks and process equipment.
Available power outputs at +10 °C are 8, 15, 30, 45, 60, 75 and 100 W/m. The cable operates at 230 V. Its maximum continuous operating temperature is +205 °C when energised, while the maximum exposure temperature when de-energised is +250 °C.
BTX is suitable for both non-hazardous and hazardous Ex areas. Its parallel construction allows the cable to be cut to the required length on site. A suitable thermostat must be used for accurate temperature control, lower energy consumption and longer cable life.
Product code: 51960244
Applications
BTX heating cable is suitable for:
- frost protection of industrial pipelines;
- maintaining high process temperatures;
- maintaining the required viscosity of process media;
- heating tanks, vessels and process equipment;
- pipelines requiring steam purging;
- chemical and petrochemical plants;
- power generation and the oil and gas industry;
- marine and port installations;
- ATEX-classified hazardous areas.
Main benefits
- power outputs from 8 to 100 W/m;
- maximum operating temperature of +205 °C when energised;
- exposure temperature up to +250 °C when de-energised;
- self-regulating heat output;
- can be cut to the required length on site;
- will not overheat when crossed or overlapped;
- UV- and chemical-resistant fluoropolymer outer jacket;
- suitable for pipelines cleaned by steam purging;
- approved for explosive gas and dust atmospheres;
- wide range of certified connection accessories.
Technical specifications
- Product type: high-temperature self-regulating industrial heating cable
- Manufacturer: Sigmian GmbH
- Cable series: BTX
- Nominal power outputs at +10 °C: 8, 15, 30, 45, 60, 75 and 100 W/m
- Supply voltage: 230 V AC
- Maximum continuous operating temperature when energised: +205 °C
- Maximum continuous exposure temperature when de-energised: +250 °C
- Ambient temperature range: –60 to +55 °C
- Minimum installation temperature: –60 °C
- Minimum bending radius: 25 mm
- Conductor cross-section for 8–60 W/m models: 1.25 mm²
- Conductor cross-section for 75 and 100 W/m models: 2.00 mm²
- Conductors: nickel-plated copper
- Protective screen: tinned copper braid
- Outer jacket: fluoropolymer
- Cable dimensions for 8–60 W/m models: 12.1 × 5.2 mm
- Cable dimensions for 75 and 100 W/m models: 14.5 × 5.9 mm
- ATEX certificate: CETS 23 ATEX 030X
- ATEX category: II 2 GD
- Ex marking for 8–60 W/m models: Ex 60079-30-1 IIC T3 Gb / Ex 60079-30-1 IIIC T200 °C Db
- Ex marking for 75 and 100 W/m models: Ex 60079-30-1 IIC 240 °C (T2) Gb / Ex 60079-30-1 IIIC T300 °C Db
Cable selection and temperature control
The suitable power output and maximum heating circuit length depend on the pipe or tank dimensions, required maintenance temperature, minimum ambient temperature, insulation thickness, start-up temperature and circuit breaker rating.
A self-regulating heating cable reduces its heat output as the temperature rises, but it does not switch off completely. A suitable thermostat must therefore be used to maintain an accurate temperature, reduce energy consumption and extend the service life of the cable.
In hazardous areas, connection kits, cable glands, junction boxes, temperature sensors and control equipment must comply with the Ex classification of the installation area. The system must be designed and installed by a qualified professional.