This cable is used for internal wiring of switchboards and distribution boards when the AC voltage is up to 1000 V or the DC voltage is up to 750 V. It is generally installed in pipes and is used for internal wiring of equipment with an operating temperature of 90°C. It is suitable for public places (such as government buildings, etc.) where smoke and toxic gases may cause life threats and damage to equipment. This cable does not produce corrosive gases when burning, which is particularly important for electrical equipment.
Application and Description：
This cable is used for internal wiring of switchboards and distribution boards when the AC voltage is up to 1000 V or
the DC voltage is up to 750 V. It is generally installed in pipes and is used for internal wiring of equipment with an
operating temperature of 90°C. It is suitable for public places (such as government buildings, etc.) where smoke and
toxic gases may cause life threats and damage to equipment. This cable does not produce corrosive gases when
burning, which is particularly important for electrical equipment.
Standards and certifications：
Cable construction：
- Solid bare copper single strand conductor, compliant with IEC 60228 Cl-1 (H05Z-U / H07Z-U)
- Stranded bare copper conductor, compliant with IEC 60228 Cl-2 (H05Z-R)
- Cross-linked polyolefin EI5 insulation
- Core color coding compliant with VDE-0293
- LSOH - Low Smoke Zero Halogen
Technical characteristics：
- Working voltage: 300/500v (H05Z-U), 450/750v (H07Z-U / H07Z-R)
- Test voltage: 2500 V
- Dynamic bending radius: 15 x Ø
- Static bending radius: 10 x Ø
- Operating temperature in application: +5º C to +90º C
- Flame retardant: IEC 60332.1
- Insulation resistance: 10 MΩ x km
|
Number of cores x conductor cross-sectional area # x mm² |
Nominal insulation thickness mm |
Nominal outer diameter mm |
Nominal copper weight kg/km |
Nominal cable weight kg/km |
|
H07Z-U |
||||
|
1 x 1.5 |
0.7 |
2.8 |
14.4 |
20 |
|
1 x 2.5 |
0.8 |
3.3 |
24 |
30 |
|
1 x 4 |
0.8 |
3.8 |
38 |
45 |
|
1 x 6 |
0.8 |
4.3 |
58 |
65 |
|
1 x 10 |
1.0 |
5.5 |
96 |
105 |
Product Advantages
Enhanced Conductor & Insulation Design
The H07Z-U inherits a solid copper wire conductor (Class 1) which delivers optimal electrical conductivity and mechanical robustness, making termination simple and predictable. The halogen-free, low-smoke insulation system ensures safe behaviour during fire exposure — a requirement increasingly emphasised by wiring specifiers and public-space installers. By choosing this cable, companies in the cable manufacturing sector can meet both performance and regulatory demands, and wire manufacturers can offer a wired product that offers reduced voltage drop, stable resistance, and superior long-term mechanical stability. The combined conductor and insulation design enhances system reliability and supports scenarios requiring robust power supply integrity.
Supply Chain Integration & Manufacturing Efficiency
For organisations involved in wire manufacturers networks and cable manufacturing plants, the H07Z-U cable supports streamlined manufacturing, testing and logistics. The adherence to harmonised standards (EN 50525-3-41, IEC/EN 60228) and standard cross-section sizes (1.5mm² to 10mm²) reduces custom tooling and simplifies shipment categorisation. Using a widely recognised specification enhances procurement consistency, allows bulk purchase discounts, and supports scalable production workflows. The cable’s compatibility with existing cable-line infrastructure means reduced changeover time for manufacturers, and faster time-to-market of wiring assemblies — contributing to cost-efficiency and improved throughput in manufacturing operations.
Sustainability-Focused Materials & Lifecycle Advantage
The H07Z-U cable supports the trend toward sustainable cable materials by incorporating halogen-free insulation that limits emission of toxic gases during fire, aligning with modern building safety codes and environmental responsibility. Many specifiers now prioritise cables that contribute to occupant safety, reduce smoke density and comply with environmental standards. The solid copper conductor lends itself to recycling and reuse, making this cable a worthwhile investment in longer-term infrastructure. For facility managers overseeing power supply systems, this means reduced risk of premature cable failure, lower maintenance overhead and alignment with sustainability goals. For the supply side, being able to offer a cable with both technical performance and eco-credentials strengthens brand positioning among progressive wire manufacturers and advanced cable manufacturing operations.
Use Scenarios
Electrical Panel Builder Configuring Fixed Wiring
A panel builder working for a commercial building management company selects the H07Z-U cable to wire internal control cabinets and distribution boards. The engineer specifies that internal wiring must use a solid copper wire conductor for reliability, and halogen-free insulation for occupant safety and equipment protection. They coordinate with trusted wire manufacturers to source the cable in consistent colour-coded rolls (black, blue, brown, etc.). The choice of H07Z-U ensures that the panel builder’s product meets the fire-safety expectations of property owners, aligns with the power supply infrastructure of the building, and simplifies integration into the factory’s wiring manufacturing line by leveraging cable manufacturing standards already familiar to their subcontractors.
Facilities Engineer Upgrading Building Infrastructure
The facilities manager of a large office campus undertakes a rewiring project for lighting and control circuits, where ambient conditions may reach elevated temperatures and the wiring runs are long. They specify H07Z-U cable because of its 450/750 V rating, solid conductor stability and LSZH insulation. They source this cable from major wire manufacturers and coordinate with the building’s M&E contractor to integrate the wiring as part of a holistic power supply upgrade. The straightforward specification and standard cross-section sizing (1.5 mm² to 10 mm²) align with the contractor’s preferred cable manufacturing supplier, enabling faster installation, clearer logistics and the benefit of a cable whose lifecycle supports the building’s sustainability initiatives.
OEM Lighting Manufacturer Specifying Internal Harness Wiring
A lighting fixture OEM designs a new series of high-end luminaires for retail and public spaces. The internal wiring harness requires a single-core fixed cable rated for 450/750 V and low smoke halogen protection due to installation in occupancy zones. The OEM sourcing team partners with established wire manufacturers, specifying H07Z-U cable (solid copper wire, LSZH insulation) for harness segments. The in-house manufacturing line, which performs wiring assemblies, treats the cable as a standardized component in their cable manufacturing workflow. By specifying H07Z-U, the OEM ensures alignment with the building’s power supply wiring schema, simplifies parts procurement, and guarantees consistency across lighting fixtures deployed in multiple sites.
About Us
At JindA Cable, we specialise in the design and manufacture of high-quality wiring solutions that serve wiring harnesses, appliance makers, lighting engineers and infrastructure integrators worldwide. Our domain expertise spans fixed internal wiring, single-core cables and modular wiring systems tailored for the demands of modern equipment and building services. We partner with leading-edge wire manufacturers and maintain advanced extrusion and assembly lines dedicated to cable manufacturing, enabling us to deliver products that align closely with the needs of OEMs, wiring specifiers and system integrators. Our customer base includes lighting fixture producers, electrical panel builders, facilities maintenance teams and global distributors seeking reliable, trace-able wires. Positioned as a key supplier in the value chain of power-supply wiring and control cabling, we commit to consistent quality, documentation and responsiveness rather than hype. For direct enquiry, sample supply or tailored wiring solutions request please contact our sales team today!
FAQ
1.What installation environments are suitable for H07Z-U cable?
The H07Z-U cable is intended for fixed installations in dry indoor locations, such as within conduits or trunking inside buildings. It is not suitable for outdoor direct burial or exposed UV conditions without additional protection.
2.What warranty and technical support does your cable supply include?
Our cables are manufactured under controlled conditions and tested to harmonised standards. We provide a standard warranty covering manufacturing defects. Full data sheets and certification (e.g., EN 50525-3-41) are available.
3.With which terminations is H07Z-U compatible?
The H07Z-U cable features a rigid solid conductor ideal for screw-clamp terminations or soldered joints. Typical cross-sections (1.5mm² to 10mm²) support standard terminal blocks and panel wiring installations.
4.What is the typical delivery lead time for H07Z-U cable orders?
Standard stock lengths are typically available; lead time depends on batch size, colour options and custom print requirements. Please consult our sales team for current lead-times.
5.How is customer data handled when placing custom cable orders?
When you place an order for customised cable (colour, length, branding), we collect minimal business-contact information for order fulfilment. We do not share personal data beyond logistics partners and store records under secured protocols.
