Longline Heating Cables
For very long pipelines, the use of parallel heating technology becomes very costly due to the very large electrical distribution system that would be required.
However, an advantage is that long circuit lengths are possible using our Longline range of heater cables. Typically 3-phase Longline heating cables require electric supply points only at multi-kilometre intervals. Due to this, the number of power points required is dramatically reduced and can offer signifcant CAPEX savings.
We can produce series resistance heating cables within the following ranges:
- Up to 6600 Volts 3 phase
- Up to 230°C (446°F) withstand temperature
- Up to 50 W/m of output
Example of Applications
- Freeze protection of long pipelines
- 3 Phase heating systems
- Above ground or underground pipelines
Benefits
- Circuit lengths up to 50 kilometres
- Constant power along unit length
- Easy installation in convienient lengths
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Longline Round
Longline Round LLR & LLR-HV
Longline Round (LLR and LLR-HV) heating cables are high performance Series Resistance heaters for long pipelines where temperature maintenance or freeze protection is needed. They are used where circuit lengths exceed the capabilities of parallel resistance self-regulating or constant power heaters in order to minimise the number of electrical supply points. Circuit lengths of multi-kilometre are possible from a single supply point.
Longline Round (LLR) provides constant power per unit length without voltage drop along the length. Hence round heating cable may be provided for single or 3-Phase connection.
The continuous metal jacket allows for increased mechanical strength, reducing the risk of damage and providing superior fire-resisting properties compared with most heating cables.
Example of Applications
- Freeze protection of long pipelines
- Temperature maintenance of long pipelines
Benefits
- Circuit lengths up to 60km
- Suitable for single or 3 phase applications
- Metal jacket for increased mechanical strength and fire resistance
Product Specification - maximum withstand temperature 230°C (446°F)
Longline R (LLR & LLR-HV) is available in various outputs up to 60 W/m per cable.
Maximum Withstand Temperature (power off)
230°C (446°F)
Minimum Installation Temperature
-40°C (-40°F)
Minimum Operating Temperature
-60°C (-76°F)
Rated Voltage LLR
up to 1500V single phase
2500V 3-Phase
Rated Vltage LLR-HV
up to 10kV 3-Phase
Cable Dimensions
see data sheet
Minimum Bending Radius
see data sheet
Maximum Workpiece Temperatures (°C)
Please see the datasheet. Surface temperature limits in accordance with EN50014
Accreditations
LLR 18ATEX3379X
LLR-HV 18ATEX3378X
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Longline HTP
Longline HTP1F & HTP3F
Longline (HTP1F) is a series resistance, single conductor heating cable. It is supplied in multiples of three cables for configuring into a 3 phase heating system. It is used for freeze protection or process temperature maintenance of long pipelines up to 5km. A typical application is the freeze protection of above ground water pipelines.
Longline (HTP3F) is a series resistance, three phase constant power heating cable used for freeze protection or process temperature maintenance of moderately long pipelines up to 2km. A typical application is the freeze protection of above ground water pipelines.
Longline HTP minimises the number of electrical supplies needed and so minimises supply cabling and distribution equipment costs. Circuits are often fed at the pipe ends only.
The number of heating cables and their conductor size is varied to produce the desired heat output for the circuit length required. The Longline HTP heating cables are connected directly to the 3 phase mains voltage or to a step-up transformer.
The large heated surface of Longline HTP's flat foil construction results in lower operating temperatures than equivalent round conductor constructions thereby improving safety and system life. The high efficiency produces high power capability up to 23W/m for each cable.
Example of Applications
- Long pipelines
- Buried pipelines
- 3-Phase heating systems
Benefits
- Circuit lengths up to 2km (HTP3F) or 5km (HTP1F)
- Single supply point, minimises supply cabling costs
- Available up to 600VAC
Product Specification - maximum withstand temperature 125°C (257°F)
Longline HTP is available in 10, 15, and 23 W/m outputs.
Maximum Withstand Temperature (Power Off)
125°C (257°F)
Minimum Installation Temperature
-40°C (-40°F)
Minimum Operating Temperature
-60°C (-76°F)
Power Supply
up to 600V 3-Phase
Cable Dimensions
HTP1F-CT 22.0 x 8.0mm +/- 0.5mm (16mm²)
HTP3F-CT 25.0 x 7.0mm +/- 0.5mm
Weight kg/100m
HTP1F-CT - 65.0 kg (16mm²)
HTP3F-CT - 65.0 kg
Minimum Bending Radius
75mm (16mm²)
Maximum Workpiece Temperatures (°C) Heater Nominal Output (W/m)
HTP1F
HTP1F-C
HTP1F-CT
10
112
109
100
15
94
95
85
23
78
80
70
HTP3F
HTP3F-C
HTP3f-CT
10
112
109
100
15
94
95
85
23
78
80
70
Surface temperature limits in acordance with EN50014
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Longline HTS
Longline HTS1F & HTS3FM
Longline (HTS1F) is a series resistance, single conductor heating cable . It is supplied in multiples of three cables for configuring into a 3 phase heating system. It is used for freeze protection or process temperature maintenance of long pipelines up to 5km, in safe or hazardous areas. A typical application is the temperature maintenance of crude or fuel oils in above ground or buried transfer lines. Longline (HTS1F) minimises the number of electrical supplies needed and so minimises supply cabling and distribution equipment costs. Circuits are often fed at the pipe ends only.
The number of heating cables and their conductor size is varied to produce the desired heat output for the circuit length required. The Longline (HTS1F) heating cables are connected directly to the 3 phase mains voltage or to a step-up transformer.
Longline HTS3FM
Longline (HTS3FM) is a series resistance, three phase constant power heating cable used for freeze protection or process temperature maintenance of moderately long pipelines up to 2km, in safe or hazardous areas. A typical application is the temperature maintenance of crude or fuel oils in above ground or buried transfer lines.
Longline (HTS3FM) minimises the number of electrical supplies needed and so minimises supply cabling and distribution equipment costs. Circuits are often fed at the pipe ends only. Heating conductors are sized to produce the desired heat output for the circuit length required. The Longline (HTS3FM) heating cables are connected directly to the 3 phase mains voltage or to a step-up transformer.
The large heated surface of Longline (HTS3FM)'s flat foil construction results in lower operating temperatures than equivalent round conductor constructions thereby improving safety and system life. The high efficiency produces high power capability up to 50W/m.
Example of Applications
- Long pipelines
- Buried pipelines
- 3-Phase heating systems
Benefits
- Circuit lengths up to 2km (HTS3FM) and 5km (HTS1F)
- Power outputs up to 50W/m
- Available up to 600VAC (HTS1F) and1000VAC (HTS1F)
Product Specification - maximum withstand temperature 200°C (392°F)
Longline HTS1F & HTS3FM is available in 10, 20, 30, 40 and 50 W/m outputs.
Maximum continuous exposure Temperature
( Power on )
200°C (392°F)
Maximum permissable exposure Temperature
( Power off )
200°C (392°F)
Minimum Operating Temperature
-80°C (-112°F)
Minimum installation temperature
-40°C (-40°F)
Power Supply
HTs1F:
up to 600V single phase
up to 1000V 3-Phase
HTS3FM:
up to 1000V 3-Phase
Power Output
up to 50W/m
Maximum Workpiece Temperatures (°C) Heater Nominal Output (W/m)
HTS1F-x
HTS3FM-x
HTS1F-xS
HTS3FM-xS
HTS1F-xF
HTS3FM-xF
10
200
200
200
20
191
180
180
30
163
157
157
40
133
127
127
50
97
92
92
Surface temperature limits in acordance with EN50014
Accreditations
HTS1F
19ATEX3388X
HTS1F
21UKEX31147XHTS3FM
19ATEX3389XHTS3FM
21UKEX31148X
View the Heat Trace Cable Range Max Exposure Temperature & Output Capability Graph:
Datasheets
Product Instructions
