H05G-U/H07G-U/R
Application and Description
These cables are recommended for the internal wiring of switchboards and distributor boards as well as in operating parts in or on lights. The higher temperature range allows for connections to heaters with an alternating nominal voltage of 1000V. or direct nominal voltage of 750V. These cables are all allowed for laying in tubes in and under plaster.
Standard and Approval
HD 22.7 S2
VDE-0282 Part-7
CEI 20-19/7
CEI 20-35(EN60332-1)
CE Low Voltage Directive 73/23/EEC and 93/68/EEC
ROHS compliant
Cable Construction
Solid bare copper / strands |
Strands to VDE-0295 Class-1/2, IEC 60228 Class-1/2 |
Rubber compound type EI3 (EVA) to DIN VDE 0282 part 7 insulation |
Cores to VDE-0293 colors |
Technical Characteristics
WORKING VOLTAGE | 300/500v (H05G-U) ; 450/750v (H07G-U/R) |
|---|---|
TEST VOLTAGE | 2000volts (H05G-U) ; 2500 volts (H07G-U/R) |
FLEXING BENDING RADIUS | 7 x Ø |
STATIC BENDING RADIUS | 7 x Ø |
FLEXING TEMPERATURE | -25 ºC to +110 ºC |
STATIC TEMPERATURE | -40 ºC to +110 ºC |
SHORT CIRCUIT TEMPERATURE | +160 ºC |
FLAME RETARDANT | IEC 60332.1 |
INSULATION RESISTANCE | 10 MΩ x km |
Cable Parameter
AWG | NO. OF CORES X NOMINAL CROSS SECTIONAL AREA | NOMINAL THICKNESS OF INSULATION | NOMINAL OVERALL DIAMETER | NOMINAL COPPER WEIGHT | NOMINAL WEIGHT |
|---|---|---|---|---|---|
# X MM² | MM | MM | KG/KM | KG/KM | |
H05G-U | |||||
20 | 0.6 | 2.1 | 4.8 | 9 | |
18 | 0.6 | 2.3 | 7.2 | 12 | |
17 | 0.6 | 2.5 | 9.6 | 15 | |
H07G-U | |||||
16 | 0.8 | 3.1 | 14.4 | 21 | |
14 | 0.9 | 3.6 | 24 | 32 | |
12 | 1.0 | 4.3 | 38 | 49 | |
H07G-R | |||||
10(7/18) | 1.0 | 5.2 | 58 | 70 | |
8(7/16) | 1.2 | 6.5 | 96 | 116 | |
6(7/14) | 1.2 | 7.5 | 154 | 173 | |
4(7/12) | 1.4 | 9.2 | 240 | 268 | |
2(7/10) | 1.4 | 10.3 | 336 | 360 | |
1(19/13) | 1.6 | 12.0 | 480 | 487 | |
Introduction
In the realm of industrial and electrical engineering, the selection of appropriate cabling is critical for ensuring safety, reliability, and efficiency in various applications. Among the myriad of cable types available, the H05G-U and H07G-U/R harmonized code industrial cables stand out for their versatility, durability, and compliance with stringent international standards. These cables, designed for internal wiring in switchboards, distributor boards, and lighting fixtures, are engineered to withstand high temperatures and demanding environments, making them indispensable in both commercial and industrial settings.
Applications
The H05G-U and H07G-U/R cables are designed for internal wiring in various applications, including:
Switchboards and Distributor Boards: Their robust insulation and high voltage ratings make them ideal for connecting components in control panels and distribution systems.
Lighting Fixtures: Used in or on lights, these cables ensure reliable power delivery and safety in high-temperature environments.
Heater Connections: The extended temperature range (up to +110°C) allows for safe connections to heaters with alternating nominal voltages of 1000 V or direct nominal voltages of 750 V.
Installation in Tubes and Under Plaster: Their flexibility and durability enable installation in confined spaces and under plaster, common in building infrastructure.
In South Africa, these cables are widely used in industries such as mining, manufacturing, and construction, where reliable electrical performance is paramount.
Advantages of H05G-U and H07G-U/R Cables
High Temperature Tolerance: With a static temperature range of -40°C to +110°C and a short-circuit temperature of +160°C, these cables perform reliably in extreme conditions.
Flame Retardancy: Compliance with IEC 60332.1 ensures safety in environments prone to fire hazards.
Flexibility: The stranded conductors in H07G-R variants offer enhanced flexibility, ideal for dynamic applications.
Durability: The EVA insulation provides excellent resistance to mechanical stress and environmental factors.
Compliance with Standards: Adherence to international standards ensures global applicability and regulatory compliance.
Frequently Asked Questions
1. What are the primary differences between H05G-U and H07G-U/R cables?
The H05G-U cables are designed for lower voltage applications (300/500 V) and typically use solid copper conductors, making them suitable for static installations. In contrast, H07G-U/R cables support higher voltages (450/750 V) and use stranded conductors (H07G-R) for increased flexibility, ideal for applications requiring some movement or higher power demands.
2. Can these cables be used in outdoor applications?
While H05G-U and H07G-U/R cables are primarily designed for internal wiring, they can be used in outdoor applications if protected within conduits or tubes. Their temperature range (-40°C to +110°C) and insulation properties make them suitable for sheltered outdoor environments, but direct exposure to UV radiation or extreme weather should be avoided.
3. Are these cables compliant with South African regulations?
Yes, the cables comply with international standards such as VDE-0282 and CE Low Voltage Directives, which align with South African electrical safety regulations (e.g., SANS 10142-1). Their ROHS compliance also ensures adherence to environmental standards.
4. What makes these cables suitable for high-temperature environments?
The EVA insulation (type EI3) and the ability to operate at temperatures up to +110°C (and +160°C during short circuits) make these cables ideal for high-temperature applications, such as heater connections and industrial control systems.
5. How do I select the appropriate cable size for my application?
The choice of cable size depends on the current load, voltage requirements, and environmental conditions. For example, H05G-U cables with a 1 x 0.5 mm² cross-section are suitable for low-power lighting, while H07G-R cables with a 1 x 50 mm² cross-section can handle high-power industrial applications. Consulting with a qualified electrician or referring to the cable parameter table is recommended.
The H05G-U and H07G-U/R harmonized code industrial cables represent a pinnacle of engineering excellence, combining robust construction, high thermal tolerance, and compliance with international standards. Their versatility makes them indispensable in applications ranging from mining control systems to commercial building infrastructure in South Africa and beyond.
