BS EN 50266-1:2001 CY LSZH Screened Flexible Control Cable 300/500V
BS EN 50266-1:2001 CY LSZH Screened Flexible Control Cable is a 300/500V low-smoke halogen-free flexible control and instrumentation cable for machinery, production lines and mobile applications without tensile load. Its tinned-copper wire braid screen helps protect control and signal circuits against external interference pulses.
PRODUCT OVERVIEW
The cable combines plain annealed flexible copper conductors, LSZH core insulation, a Melinex tape layer and tinned-copper wire braid (TCWB) screen, finished with a grey LSZH outer sheath. It is designed for instrumentation and control equipment in tooling machinery, production lines and other flexible applications with free movement where no tensile load is applied.
The product is suitable for dry, ambient and wet rooms. The screen is intended to protect against external interference pulses and support interference-free signal transmission. The source specifically states that the cable is not intended for outdoor or underground installation, so the installation environment should be confirmed before selection.
KEY FEATURES
- 300/500V screened flexible control cable.
- Plain annealed flexible copper conductors.
- LSZH insulation and LSZH outer sheath.
- Melinex tape + TCWB (tinned copper wire braid) overall screen.
- Grey sheath.
- Colour-coded cores for small core counts; black numbered cores plus green/yellow from 7 cores upward.
- Suitable for flexible movement without tensile load.
- Suitable for dry, ambient and wet rooms.
- Not intended for outdoor or underground installation.
- Operating temperature: -15°C to +80°C flexing; -40°C to +80°C fixed.
CABLE CONSTRUCTION
Conductor | Plain annealed flexible copper |
Insulation | LSZH |
Screen | Melinex tape + TCWB (tinned copper wire braid) |
Outer Sheath | LSZH |
Sheath Colour | Grey |
Voltage Rating | 300/500V |
STANDARD BASIS & FIRE PERFORMANCE FOCUS
The source product data references BS EN 50266-1:2001 for fire testing of vertically mounted bunched wires or cables. This standard is now withdrawn and has been superseded; therefore it should be treated as a historical fire-performance reference rather than the current standard for new specifications.
Referenced Standard | BS EN 50266-1:2001 |
Standard Role in Source | Common test methods for cables under fire conditions |
Fire Test Focus | Vertical flame spread of vertically-mounted bunched wires or cables |
Rated Voltage | 300/500V |
STANDARD STATUS & SUCCESSION
BS EN 50266-1:2001 is a historical / withdrawn British Standard. It was superseded by BS EN 60332-3-10:2009, which was later superseded by BS EN IEC 60332-3-10:2018. The 2001 document may still appear in legacy project specifications and historical product documentation, but it should not be presented as the current fire-test standard for new specifications.
For this product page, BS EN 50266-1:2001 is retained because it is the standard explicitly referenced in the source product data. For current projects, buyers should confirm whether the latest successor standard is required by the project specification, authority or client.
Item | Status / Reference |
Referenced in source product data | BS EN 50266-1:2001 |
Status | Withdrawn / historical |
Superseded by | BS EN 60332-3-10:2009 |
Current successor | BS EN IEC 60332-3-10:2018 |
Website use | Keep as historical standard page; clearly show successor chain |
SCREENING & EMC FUNCTION
The CY-style screen is formed by a Melinex tape and tinned-copper wire braid. Its practical purpose is to reduce the influence of external interference pulses on control and instrumentation circuits, helping maintain more stable signal transmission in machinery and production-line environments.
The screen should be terminated according to the equipment manufacturer’s grounding and EMC practice. The product data does not define a universal screen-termination method, so project-specific grounding requirements should be confirmed during engineering.
PRODUCT APPLICATIONS
- Instrumentation and control equipment.
- Tooling machinery.
- Production lines.
- Flexible machine wiring with free movement and no tensile load.
- Control and signal circuits where external interference suppression is required.
- Dry rooms.
- Ambient rooms.
- Wet rooms.
The listed range covers 1 to 25 cores depending on conductor size, with conductor sections from 0.5 mm² up to 16 mm² in the source table. The table below reproduces the diameter-over-laid-up-cores, nominal overall diameter and approximate mass values supplied for each construction.
| Size mm² | No. of Cores | Dia. over Laid-up Cores mm | Nominal Overall Dia. mm | Approx. Weight kg/km |
|---|---|---|---|---|
| 0.75 | 1 | 2.4 | 4.0 | 27 |
| 1 | 1 | 2.5 | 4.2 | 32 |
| 1.5 | 1 | 2.8 | 5.1 | 46 |
| 0.5 | 2 | 3.9 | 6.5 | 59 |
| 0.75 | 2 | 4.3 | 6.8 | 71 |
| 1 | 2 | 4.6 | 7.1 | 80 |
| 1.5 | 2 | 5.2 | 7.7 | 97 |
| 2.5 | 2 | 6.4 | 9.3 | 140 |
| 4 | 2 | 8.4 | 11.5 | 206 |
| 6 | 2 | 9.8 | 12.9 | 268 |
| 0.5 | 3 | 4.2 | 6.8 | 79 |
| 0.75 | 3 | 4.6 | 7.1 | 85 |
| 1 | 3 | 4.9 | 7.4 | 97 |
| 1.5 | 3 | 5.6 | 8.3 | 124 |
| 2.5 | 3 | 6.9 | 9.8 | 177 |
| 4 | 3 | 9.0 | 12.1 | 264 |
| 6 | 3 | 10.6 | 13.9 | 357 |
| 10 | 3 | 14.4 | 18.0 | 500 |
| 16 | 3 | 17.1 | 21.4 | 800 |
| 0.5 | 4 | 4.8 | 7.4 | 83 |
| 0.75 | 4 | 5.1 | 7.6 | 101 |
| 1 | 4 | 5.5 | 8.0 | 117 |
| 1.5 | 4 | 6.3 | 9.2 | 154 |
| 2.5 | 4 | 7.7 | 10.6 | 217 |
| 4 | 4 | 10.1 | 14.4 | 364 |
| 6 | 4 | 11.9 | 15.2 | 446 |
| 10 | 4 | 16.1 | 20.3 | 783 |
| 16 | 4 | 19.2 | 23.9 | 1250 |
| 0.5 | 5 | 5.1 | 7.7 | 94 |
| 0.75 | 5 | 5.8 | 8.2 | 118 |
| 1 | 5 | 6.1 | 9.0 | 144 |
| 1.5 | 5 | 7.0 | 9.9 | 181 |
| 2.5 | 5 | 8.6 | 11.7 | 263 |
| 4 | 5 | 11.3 | 14.6 | 399 |
| 6 | 5 | 13.2 | 16.7 | 543 |
| 10 | 5 | 18.0 | 22.2 | 876 |
| 16 | 5 | 21.4 | 26.1 | 1415 |
| 0.5 | 7 | 5.7 | 8.5 | 119 |
| 0.75 | 7 | 6.3 | 9.2 | 154 |
| 1 | 7 | 6.7 | 9.6 | 178 |
| 1.5 | 7 | 7.8 | 10.7 | 228 |
| 2.5 | 7 | 9.6 | 12.7 | 337 |
| 4 | 7 | 12.6 | 15.9 | 516 |
| 6 | 7 | 14.7 | 18.2 | 709 |
| 0.5 | 12 | 8.1 | 1.3 | 201 |
| 0.75 | 12 | 8.9 | 12.0 | 242 |
| 1 | 12 | 9.6 | 12.7 | 284 |
| 1.5 | 12 | 10.8 | 14.1 | 369 |
| 2.5 | 12 | 13.3 | 16.8 | 549 |
| 0.5 | 18 | 9.5 | 12.6 | 248 |
| 0.75 | 18 | 10.5 | 13.6 | 304 |
| 1 | 18 | 11.2 | 14.3 | 354 |
| 1.5 | 18 | 12.7 | 15.8 | 453 |
| 2.5 | 18 | 16.9 | 21.1 | 787 |
| 0.5 | 25 | 11.6 | 14.8 | 347 |
| 0.75 | 25 | 12.8 | 16.1 | 436 |
| 1 | 25 | 13.9 | 17.2 | 520 |
| 1.5 | 25 | 15.6 | 19.1 | 684 |
| 2.5 | 25 | 19.2 | 23.1 | 1050 |
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From Production to Delivery
From raw material preparation to final shipmen, every stage is caretuly controled to ensure consistent conductor quality, reliable pertormance,and sae delivery. Our roduction,
inspection, packaging, and logistics processes are managed in accordance with applicable standards and project requirements.
Production
Flexible plain annealed copper conductors are insulated with LSZH material, laid up into the required core configuration, wrapped with Melinex tape, screened with tinned-copper wire braid and finished with a grey LSZH sheath.
Inspection
Inspection focuses on conductor flexibility, insulation and sheath condition, core identification, screen continuity and braid quality, overall diameter and finished-cable appearance against the approved technical schedule.
Packaging
Finished cable can be packed in coils or on drums according to ordered size and length. Cable ends are protected and product identification can include size, core count, voltage and project reference.
Shipping
Before shipment, packaging and accompanying documents are checked against the order. Product identification, inspection records and requested technical documentation can be prepared for the customer.
Frequently Asked Questions
What is the purpose of the screen?
To protect against external interference pulses and support interference-free transmission.
What temperatures are listed?
-15°C to +80°C while flexing and -40°C to +80°C in fixed installation.
Can the cable be installed underground?
No. The source states that it is not used for underground installation.
Can the cable be installed outdoors?
No. The source states that it is not used for outdoor installation.
Is the cable suitable for wet rooms?
Yes. The source lists dry, ambient and wet rooms.
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