Grand Meyer® UHC-25

Self-regulating heating cable of a parallel type for universal use for freezing protection and maintaining the set temperature of pipelines and tanks that are not subjected to steaming, including in hazardous areas, as well as for heating various elements of roofing and drainage systems.

Conductor made of tin-plated copper wires with a cross section of 1.0 mm²

Semiconductive self-adjusting matrix

First layer of internal insulation*

Second layer of internal insulation made of modified polyolefin

Wire screen (max. resistance
≤18.2 ohm/km)

Outer sheath made of modified polyolefin with increased resistance to corrosive environments and UV radiation

The Grand Meyer self-regulating heating cable type UHC-25 is an electrical tape heater with parallel conductors. A semi-conductive self-adjusting matrix is ​​applied to tin-plated copper bars (1.0mm²) consisting of a large number of stranded wires. The heat-releasing element of the heating cable is the matrix itself, which changes the heat release depending on the ambient temperature.

Two layers of internal insulation applied to the fuel matrix provide dielectric resistance, moisture resistance, impact and abrasion resistance, and chemical protection to the fuel matrix. The first layer of internal insulation is made using a unique patented technology by co-extrusion with a matrix onto conductive conductors and forms a single whole with it.

The cable is protected by a wire screen, which provides mechanical protection for the fuel matrix and ensures reliable grounding along the entire length of the cable.

The modified polyolefin outer insulation is chemically resistant, solar radiation resistant and allows the heating cable to be used in humid or corrosive environments.

* The layer is made using a unique patented technology by co-extrusion with a matrix onto conductive wires and forms a single whole with it.

Operating principle

Parallel conductors provide voltage along the entire length of the heating cable, the semi-conductive matrix is ​​a continuous heating element. This design allows you to cut the cable anywhere, excluding the appearance of cold zones. The heating cable acquires self-regulating properties due to the properties of the conductive matrix. As the temperature of the matrix material increases, depending on the ambient temperature and the heat dissipation of the cable, the number of local conductive bonds in the matrix decreases, automatically reducing heat dissipation. As the temperature decreases, the number of local conductive bonds increases, leading to an increase in heat generation. This happens at every point along the length of the cable. Thus, the output power depends on the environmental conditions along the length of the heated pipeline. The ability of self-regulation eliminates the risk of overheating or burnout of the cable when it crosses itself or when the cable passes through the thermal insulation layer.

Heat release power under normalized conditions at +10⁰С
Maximum operating temperature (continuous operation)
Maximum allowable temperature without load (1000 hours total)
Minimum mounting temperature
Power supply
~220-240V (~110V-120V on request)
Minimum bend radius
The maximum resistance of the protective braid (screen) is not more than
18.2 ohm/km
Nominal size

Temperature characteristics

Rated heat dissipation under rated conditions for UHC-25 cable with operating voltage ~220V.

Linear power, W/m

Pipe temperature, ⁰С

Maximum length of the heating section, m

(or the total length of a section of the same brand connected in parallel) depending on the type of circuit breaker.


For use with type C circuit breakers according to IEC 60898-1:2003.

* At the moment when the heating cable is turned on, a current jump occurs (starting current). Within ≈300 seconds after switching on, the current value stabilizes. The maximum starting current can be 4-5 times the rated current for which the circuit breaker is designed.

Certification Details

European CE conformity certificate. Directive 2014/35/EU. Standards IEC 60800: 2009, EN 60335-1:2012/A11:2014, EN 60335-2-96:2002/A1:2004/A2: 2009, EN 62233:2008/AC:2008.

Certificate of conformity of the Eurasian Economic Union No. EAEC RU C-LV.AD07.В.04877/22, series RU No. 0278431. Complies with the requirements of the Technical Regulations of the Customs Union “On the safety of equipment for operation in explosive environments” (TR CU 012/2011).


Component kits:

For power connection, connection and termination of the cable – a set for termination and
connection termination “Grand Meyer TTK-25”.

To ensure trouble-free operation and comply with all safety standards and requirements, we recommend using original Grand Meyer components.