The H07RN-F 3G1.5 rubber-insulated flexible cable is a high-performance industrial line engineered for demanding
conditions, where mechanical strength and environmental resistance are critical to system reliability. Its EPR
insulation and sheath are intended to balance electrical performance with tolerance for harsh operating
environments, making it a standard option in industrial automation and construction applications. The following
assessment examines its technical specifications, installation boundaries and compliance profile.
Core technical specifications
The cable is rated at 450/750V and uses bare copper conductors with EPR rubber for both insulation and sheath.
It is designed for a maximum conductor temperature of 90°C and a short-circuit temperature of 250°C, with a
fixed-installation ambient range of -40°C to +50°C.
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Parameter
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Specification
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Rated voltage
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450/750V
|
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Conductor material
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Bare copper
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Insulation and sheath material
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EPR rubber
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|
Maximum conductor temperature
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90°C
|
|
Maximum short-circuit temperature
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250°C
|
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Fixed installation ambient temperature
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-40°C to +50°C
|
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CPR fire classification
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Eca
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Application range and environmental limits
The cable is intended for medium-to-heavy mechanical loads in dry, wet and outdoor environments. Its EPR sheath
provides resistance to oil, ozone and ultraviolet radiation, supporting stable performance on construction
sites, in agricultural machinery and in cooling equipment.
Key installation limits
Although the cable is highly adaptable, several boundary conditions apply during selection and installation:
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Continuous immersion:
The cable is not suitable for applications requiring prolonged immersion in water.
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Underground installation:
The product is not designed for direct burial.
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Concrete construction:
It may be installed in plaster, rock or concrete, but must not be used in prestressed concrete structures.
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Mechanical load:
Fixed installation on cranes and moving machinery components is permitted, and the cable can withstand medium
to heavy mechanical stress.
Safety and compliance standards
The H07RN-F 3G1.5 complies with EN 50525-2-21, which covers general-purpose elastomer-insulated cables rated at
450/750V and below. For fire performance, it has passed the EN/IEC 60332-1-2 vertical flame propagation test,
providing basic flame-retardant characteristics when a single cable burns. Its CPR reaction-to-fire class is
Eca, in line with EU construction safety regulations.
Installation and operational considerations
When installed inside protected conduit or equipment, the cable's permissible voltage rating can rise to 1000V
AC, allowing it to be used as a rotor connection cable for engines. During installation, the bending radius
should be kept between four and eight times the cable's outer diameter (D) to avoid mechanical damage to the
insulation.
The cable is also suitable for construction sites or agricultural workplaces that include flammable or explosive
environments, provided the installation complies with applicable local explosion-proof electrical regulations.
Frequently Asked Questions
Can the H07RN-F cable's voltage rating be increased when it is installed in a protective conduit?
Yes. When routed inside protected conduit or equipment, the cable is permitted to operate at up to 1000V AC,
which allows it to serve as a rotor connection cable for engines.
What bending radius is required during installation?
The bending radius during installation should be between four and eight times the cable's outer diameter
(D), preventing excessive bending from damaging the insulation.
Is the cable suitable for flammable or explosive environments?
Yes. It can be used on construction sites or in agricultural workplaces that include flammable or explosive
environments, provided the installation complies with applicable local explosion-proof electrical
regulations.
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