Supra Lorad 1.5 IEC Fr 2m
Overview
The Lorad 1.5 IEC Fr is a mains power cable designed by Swedish manufacturer Supra Cables. It uses tinned OFC copper conductors and a semi-conductive carbon/nylon shield. Its 3 x 1.5 mm² cross-section is designed to limit electromagnetic interference transmitted to audio and video equipment. The design is based on LoRad (Low Radiation) technology, developed by Supra Cables after several years of research.
LoRad technology: minimizing electromagnetic radiation
The acronym LoRad stands for “Low Radiation”. Supra devoted more than five years of research and development to the original shielded LoRad cable, which has since been improved. Many years of R&D and over €100,000 of investment were required to design this first CE-approved audiophile power cable.
LoRad protects against alternating fields emitted by the cable, but also against the pickup of surrounding airborne noise fields, such as cordless and mobile phones, Wi‑Fi, radio and television broadcasts.
- The cable uses two complementary mechanisms to reduce interference:
- The outer screen protects against the electric field
- The wires are twisted with a short pitch, counteracting the alternating magnetic field which, according to the physical law of inductance, always surrounds a wire carrying current
A construction designed for flexibility and durability
The secret of the LoRad lies in the yellow/green earth conductor. Standard shielded cables have 4 conductors: blue, brown, yellow/green and an uninsulated wire in contact with the screen. Until now, it had not been possible to pass the safety test for flexible use with this bare drain wire, as it cuts and damages the inside of the cable when it is repeatedly moved and bent.
As usual, Supra did something unexpected. The yellow/green earth conductor has been insulated with a semi-conductive plastic. No drain wire is needed anymore and the cable passed the flexibility test. The cable is electrically shielded because the foil is in contact with the semi-conductive plastic on the earth conductor.
The semi-conductive carbon/nylon shielding features improved properties: better flex resistance, environmental immunity, higher tensile strength and fewer microphonic effects.
The robustness of the cable has been validated by rigorous tests: the highly flexible outer jacket easily passed the CE regulatory bending test of 2 x 30,000 flexes.
Physical characteristics and connectors
The Lorad 1.5 stands out with its characteristic glacier blue color, which has become emblematic of the range. The 1.5 mm² OFC (Oxygen Free Copper) conductors are tinned to improve resistance to oxidation and longevity. The outer diameter is 8 mm.
LoRad MkII is tested and certified by Intertek Sweden, meeting the European HD21.5 S3 safety regulation. Supra LoRad is the only audio‑grade mains cable in the world with full European safety approval.
Applications beyond home theater
Supra power cables are of such quality that they are also used in the military, medical and space sectors, where electromagnetic radiation must be eliminated.
Selected customers include the Swedish National Laboratory of Forensic Science (SKL), the Swedish Air Force (JAS project), hospitals, and a majority of European air traffic control towers.
The cable is particularly suitable for
- Hi‑fi systems and home theater setups
- Professional recording studios
- Medical and laboratory equipment
- Interference‑sensitive environments
- People with electro‑hypersensitivity (EHS)
Installation and safety instructions
To benefit fully from the LoRad effect, the cable must be connected to a properly earthed wall socket. The use of unsafe grounding (water pipes, for example) is strictly prohibited and dangerous.
The cable is designed to replace the standard detachable power cords (IEC plug) supplied with most audio and video devices: amplifiers, CD players, Blu‑ray players, projectors, TVs, computers or subwoofers.
Technical specifications
Electrical and mechanical specifications
- Rated voltage / current: 250 V / 10 A
- Conductor cross-section: 3 x 1.5 mm² (AWG 15)
- Available lengths: 1 m, 1.5 m, 2 m, 4 m
- Other lengths available on request
- Outer sheath: flexible, durable PVC
- Color: glacier blue
- Other colors available on request
Advanced technologies and materials
- LoRad technology (low radiation)
- Reduced electromagnetic fields for cleaner power supply
- Tinned OFC copper conductors
- Optimal current transmission
- Long service life
- Carbon/nylon semi-conductive shielding
- Superior protection against RF interference
- Short-pitch twisting
- Neutralizes magnetic fields to prevent interference
Connectors and finish
- 24 K gold-plated connectors
- Excellent conductivity
- Oxidation resistance
- Straight Schuko plug (SW-EU) to IEC C13 (SWF-10)
- Shielding with carbon/nylon semi-conductive tape
Safety and installation
- Always connect to a properly grounded wall outlet
- The use of unsafe grounding methods is strictly prohibited and dangerous
- Example: water pipes
Recommended applications
- High-quality hi-fi and home cinema systems
- Recording studios and sensitive installations
- Medical equipment and laboratories
- Critical environments
- Air traffic control centers
- Forensic laboratories
Frequently Asked Questions
Does LoRad shielding protect against lightning or power surges?
No, the Lorad offers no protection against power surges or lightning. Its function is limited to reducing electromagnetic interference during normal operation. For protection against voltage spikes, you should use dedicated devices such as surge protectors or Supra power strips equipped with surge protection (MD‑SP range).
What is the difference between the Lorad 1.5 and the Lorad 2.5?
The main difference lies in the conductor cross‑section: 1.5 mm² versus 2.5 mm². The Lorad 1.5 is suitable for most audio and video devices with a rated current of 10 A. The Lorad 2.5, with its larger cross‑section, is recommended for devices requiring more power or for supplying mains power strips.
Does the cable require burn‑in time?
Supra spent more than five years on research and development for the original shielded LoRad cable. The cable design is optimized right from manufacturing. However, like any electrical component, a stabilization period of a few hours of use allows the contacts to fully settle.
Can this cable be used with a British or Swiss device?
The EU version with Schuko plug is the most common standard in Europe. Exceptions are Denmark, Italy, Switzerland, Ireland and Great Britain. For these countries, specific versions with the appropriate connectors are available.
- Eco-contribution included in the sale price.