RG7H1R / RG7OZR Cable Applications Overview
RG7H1R and RG7OZR cables are medium voltage EPR-insulated power cables used for MV power distribution, airport lighting systems, and industrial plant power. The unarmoured RG7H1R is ideal for indoor tray and conduit installations, while the armoured RG7OZR provides mechanical protection for direct burial and outdoor applications.
View our RG7H1R airport lighting cable and RG7OZR armoured MV cable product pages for specifications.
Airport Runway Lighting Systems
RG7H1R cable is specifically designed for airport runway and taxiway lighting:
- Primary series lighting: MV cable powering constant current regulators for runway edge lights
- Approach lighting: Power supply to approach lighting systems and precision approach path indicators
- Taxiway lighting: MV distribution to taxiway centerline and edge lights
- Apron lighting: Power supply to apron floodlighting systems
- Buried installation: RG7H1R cables are buried alongside runways in ducts or direct-laid
The 3.6/6kV rating is standard for airport series lighting circuits per FAA and ICAO requirements.
Substation and Switchgear MV Distribution
RG7OZR armoured cable is used for substation power distribution:
- MV switchgear feeders: Armoured cable connections from MV switchgear to transformers
- Substation auxiliary power: MV power supply to substation auxiliary systems
- Transformer feeders: MV cable from switchgear to MV/LV transformers
- Ring main units: MV cable connections between ring main units
- Cable termination: Heat shrink or cold shrink termination kits at switchgear and transformer connections
Industrial Plant MV Distribution
RG7OZR is widely used in industrial facilities:
- Plant MV distribution: Power supply from substation to industrial process areas
- Motor power: MV power supply to large induction and synchronous motors
- Underground duct banks: MV cable in concrete-encased duct banks for industrial sites
- Direct burial: Steel wire armour allows direct burial without additional conduit
- Process equipment: MV power to large compressors, pumps, and fans
Application Selection Matrix
| Application | Recommended Cable | Typical Voltage | Key Requirement |
|---|---|---|---|
| Airport runway lighting | RG7H1R | 3.6/6kV | EPR insulation, buried |
| Substation MV feeders | RG7OZR | 6/10-12/20kV | SWA, direct burial |
| Industrial MV distribution | RG7OZR | 6/10-8.7/15kV | SWA, underground duct |
| Indoor cable tray (MV) | RG7H1R | 3.6/6-8.7/15kV | No armour needed |
| MV motor power | RG7OZR | 3.6/6-6/10kV | SWA, mechanical protection |
Installation Best Practices
- Bending radius: Minimum 12× OD (single-core), 15× OD (3-core)
- Terminations: Use heat shrink or cold shrink MV termination kits — never use LV methods
- Armour bonding: Ground armour at both ends for RG7OZR — use armour glands with bonding
- Screen grounding: Bond copper wire screen at both ends for fault current path
- Joints: Use MV cable joint kits rated for same voltage — maintain insulation and screen continuity
- Duct installation: Pulling tension per manufacturer’s specification, use cable pulling compound
- Direct burial: Minimum burial depth 0.6m (industrial), 0.8m (public areas); use warning tape above cable
Why Choose TEBAOFLEX for RG7H1R / RG7OZR Cable?
- IEC 60502-2 compliant manufacturing
- EPR insulation rated 90°C for continuous operation
- Both unarmoured and armoured versions available
- Wide voltage range: 3.6/6kV to 12/20kV
- Complete type test support
- Global MV project experience
Contact TEBAOFLEX for RG7H1R / RG7OZR cable selection and project pricing.
