In electrical engineering and power distribution projects, SWA Cable (Steel Wire Armoured Cable) is one of the most widely used cable types. Due to its outstanding mechanical protection and environmental resistance, it is applied extensively in airports, mining sites, commercial complexes, industrial facilities, and large-scale infrastructure.
During installation, engineers and buyers often raise the same question: Can SWA cables be used with compression cable glands?
This question is not only about installation convenience but also about long-term reliability and electrical safety. This article provides a detailed technical explanation, compares SWA with other cables, and shares practical guidance on choosing and installing compression glands for SWA cables.
What Is SWA Cable?
SWA Cable (Steel Wire Armoured Cable) is characterized by an additional galvanized steel wire armour wrapped around the insulated cores and sheath. Its functions include:
1.Enhanced Mechanical Protection – Protects the cable against crushing, pulling, and external impact in underground and outdoor environments.
2.High Resistance to Environmental Stress – Defends against vibration, abrasion, and even rodent damage in industrial sites.
3.Long-Term Durability in Harsh Environments – Performs reliably in humid, corrosive, or heavy-duty installation conditions.
Typical applications: airport power supply networks, university campus distribution, underground mining systems, and industrial power backbones.
What Is a Compression Gland?
A Compression Gland is a cable termination accessory designed to secure and seal cables when they enter enclosures, junction boxes, or equipment. Its key functions include:
1.Mechanical Retention – Prevents cable pull-out and loosening.
2.Ingress Protection – Provides dustproof, waterproof, and oil-resistant sealing (commonly IP65, IP67, or IP68).
3.Electrical Safety – Stops moisture or dust from reaching terminals and reduces short-circuit risks.
4.Extended Service Life – Maintains stability at connection points, lowering maintenance costs.
Compression glands typically include a sealing ring and compression nut. When tightened, the gland compresses the outer sheath, creating a secure mechanical and environmental seal.
Can Compression Glands Be Used on SWA Cables?
Yes, compression glands can be safely used with SWA cables, provided that installation guidelines are followed:
1.Correct Sizing – Select a gland model matching the outer diameter of the SWA cable.
2.Proper Termination – Ensure the sheath is stripped correctly, and the armour layer is intact.
3.Reliable Earthing – The armour must be securely bonded to the gland's earth terminal.
4.Protection Standards – In outdoor or damp environments, use glands rated at least IP67 to guarantee sealing performance.
Advantages of using compression glands with SWA cables:
·Quick installation and easy maintenance.
·Excellent sealing, even in outdoor or underground environments.
·Improved system reliability and safety.
SWA Cable vs. NYY Cable
To highlight the differences, here is a comparison between SWA Cable and NYY Cable when used with compression glands:
| Feature | SWA Cable | NYY Cable |
|---|---|---|
| Structure | Steel wire armour for superior mechanical protection | Non-armoured, relies only on sheath |
| Environment | Underground, outdoor, heavy-duty use | Indoor wiring, general low-risk systems |
| Gland Adaptation | Gland grips sheath and connects armour to earth | Gland only seals the sheath |
| Cost | Higher but more durable | Lower, with shorter service life |
note： For demanding environments requiring mechanical strength and long-term stability, SWA Cable combined with compression glands provides superior performance compared to NYY Cable.
How to Install Compression Glands on SWA Cables
·Select the Right Gland – Match gland size to the cable's diameter and armour thickness.
·Prepare the Cable – Strip the sheath neatly; cut armour wires cleanly to prevent sharp edges.
·Fit the Gland Body – Fix the gland into the equipment or junction box entry.
·Tighten and Secure – Insert the sealing ring, then tighten the nut until the cable is firmly held.
·Ensure Earthing – Bond armour wires to the gland's earth terminal.
·Test the Connection – Perform insulation resistance, dielectric, and IP protection tests.
Key Benefits of Using Compression Glands with SWA Cables
·Superior Environmental Protection – Resistant to water, dust, and outdoor conditions.
·Secure Mechanical Grip – Prevents pull-out or loosening under stress.
·Maintains Cable Integrity – Preserves both armour and sheath functionality.
·Standards Compliance – Meets IEC and international safety standards.
·Extended System Lifespan – Reduces failure rates and maintenance costs.
Product and Service Highlights
We Manufacture IEC Standard Cables with Complete Product Range
Our product portfolio covers SWA, XLPE, PVC, NYY, N2XY, RV-K, U-1000 R2V, and more, suitable for both industrial and commercial projects.
Designed for the Americas Market
All cables comply with IEC standards and meet UL/CSA requirements, ensuring seamless adoption in North and South America.
Complete Specifications, Starting from 16mm²
·Full stock of mainstream models.
·Customized dimensions available for special project requirements.
Fast Delivery, Supporting Small and Bulk Orders
·Advanced manufacturing and storage capacity.
·Quick response to urgent project schedules.
Professional Technical Support, Worry-Free Service
·Expert team offering selection, installation, and after-sales guidance.
·Comprehensive support throughout the project lifecycle.
Global Export and Cooperation Experience
·Years of international export expertise, with partners across Europe, the Middle East, Africa, and Asia.
·Long-term cooperation with major EPC contractors worldwide.
IEC-Certified Cables for Reliable Quality
·Cables tested and certified by recognized laboratories.
·Full inspection reports and third-party certification provided.
Tailored Customization Options
·Customizable materials, sizes, lengths, colors, performance, markings, and packaging.
·Flexible production tailored to customer requirements.
Engineering Applications
·Airport Power Systems – SWA cables with compression glands ensure safe and reliable underground supply.
·Mining and Tunneling Projects – Withstand heavy mechanical stress while maintaining system integrity.
·University and Business Campuses – Outdoor distribution systems achieve longer service life with SWA + compression glands.
Technical Insights Recap
·Compression glands are fully suitable for use with SWA cables when installed correctly.
·Compared to NYY cables, SWA offers superior mechanical and environmental performance.
·Correct gland selection, installation, and earthing are key to safety and reliability.
Company Information
Dongguan Greater Wire & Cable Co., Ltd.
·Tel/WhatsApp/Wechat: +86 135 1078 4550 / +86 136 6257 9592
·Email: manager01@greaterwire.com