In hazardous environments, cable glands are more than just mechanical parts; they are safety-critical components. Improper installation can turn a seemingly simple cable entry point into an ignition path.
Proper cable glands help to:
Before installation, ensure the cable connector:
Using uncertified or incompatible cable connectors in hazardous areas may invalidate certifications and create serious safety hazards.
Proper cable preparation is crucial for sealing performance and explosion protection.
Cable joints in hazardous areas consist of multiple components, all of which must be in place.
Depending on the design, these components may include:
Never omit washers, sealing rings, or other accessories because the joint “feels tight.” Each component serves a sealing, mechanical, or grounding function.
Each cable joint has a specified tightening torque for its sealing nut, armored clamp nut, and lock nut.
For armored cables, the armor layer not only provides mechanical protection but is also typically part of the grounding system.
After the cable joint is installed:
Good documentation facilitates future inspections, maintenance, and audits:
This information is especially important for regular inspections or equipment upgrades years later.
ATEX is an abbreviation for “ATmosphères EXplosibles”. The ATEX framework regulates the design, manufacture, and sale of equipment and protective systems for potentially explosive atmospheres. Equipment used in explosive atmospheres must comply with ATEX requirements.
ECEx is an international certification system based on International Electrotechnical Commission (IEC) standards, providing a globally recognized certification scheme for equipment used in explosive atmospheres.
In many cases, cable fittings designed specifically for hazardous (explosive) environments hold both ATEX and IECEx certifications, meaning they comply with stringent European and international safety standards.
A cable connector is a mechanical fitting used to secure and seal the point where a cable enters an electrical enclosure or equipment. ATEX and IECEx certified cable connectors are those certified by ATEX and IECEx to ensure safe use in explosive environments.
These connectors differ from “ordinary” cable connectors in several key aspects:
The connector must not be an ignition source and must prevent the escape of flames or high-temperature gases from the protected enclosure, even in the event of an internal explosion.
The connector must seal the cable entry point to prevent the ingress or escape of dust, gas, or moisture and maintain the overall environmental protection level when necessary.
The cable connector must mechanically secure the cable so that it will not accidentally detach even under vibration or mechanical stress. This ensures continuity of sealing and grounding.
For metal-armored cables, the cable connector must ensure proper connection (grounding) between the armor layer or braid and the outer shell, thus maintaining grounding continuity and explosion-proof integrity.
Certified cable fittings will bear appropriate markings indicating their protection rating. They must comply with relevant IEC/EN standards, which specify explosion-proof design and testing.
Due to these characteristics, ATEX/IECEx certified cable fittings are designed for installation in hazardous areas, such as those designated according to regulatory schemes or global equivalent classification systems.
In hazardous environments, whether it’s gases, vapors, or dust, ordinary cable joints can pose serious safety hazards. Ordinary cable joints may fail to seal properly, leading to sparks or heat leakage, and potentially allowing explosive gases to leak into the enclosure, creating a potential ignition path.
Certified cable joints, on the other hand, undergo rigorous testing and are effectively designed to prevent such hazards. Using uncertified joints renders the explosion-proof rating of the entire system ineffective, compromising the safety of the installation. Since cable entry points are often the most vulnerable points, using non-explosion-proof joints compromises the overall explosion-proof design.
Using certified joints is crucial for complying with safety regulations and industry standards when installing electrical systems in hazardous areas. In many industries, such as oil and gas, chemical plants, mining, and dust-hazardous industries, the use of certified joints is a mandatory requirement for ensuring safe operation.
Single compression cable glands are suitable for standard industrial applications expected to withstand moderate mechanical stress. These joints provide a basic level of protection suitable for less demanding environments.
Double compression cable glands are designed for heavy-duty, high-risk installations, double-crimp joints offer superior sealing and securing performance, ensuring stronger protection under harsh conditions.
Barrier cable joints are designed for explosive atmospheres and meet high standards of flame retardant integrity. They use composite sealants to prevent gas migration, ensuring safety in hazardous areas.
These joints provide additional safety features without requiring flame retardant sealing, thus enhancing protection in hazardous environments.
Ex 2 cable joints are designed to prevent internal explosions from spreading to the outside of equipment, ensuring installation integrity and reducing the risk of catastrophic failure.
Each type of cable connector is tailored to specific environmental risks, ensuring compliance with ATEX and IECEx standards and optimizing safety in hazardous locations.
IP68 Waterproof Cable Gland Sizes and Specifications
Choosing the appropriate IP68 waterproof cable connector size is crucial for ensuring optimal performance and safety in a variety of applications. The correct size depends on factors such as cable diameter, armor type, protection rating, and zone classification.
Key Specifications:
Ambient Temperature Range:
These connectors offer superior sealing performance, effectively preventing the effects of water, dust, and mechanical stress, ensuring a safe and reliable connection even in harsh environments.
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| PRODUCT PARAMETER | ||||||||||||
| Welcome to Our Website. We Are Happy to Serve You | ||||||||||||
| Fitting Material: | Brass/SS304/SS316L | |||||||||||
| Surface Treatment: | Nickel-plated, Passivation | |||||||||||
| Material For Sealing Components: | Silicone rubber, Neoprene | |||||||||||
| Explosion-proof: | Exd IIC Gb | |||||||||||
| Flame Retardant Degree: | UL94-VO | |||||||||||
| Protection Degree: | IP68-10 bar | |||||||||||
| Temperature: | Static state:-60 to 100℃,Short time to 120℃ Dynamic state:-20℃ to 80℃,Short time to 100℃ |
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| Applicable cable type: | Armored cable | |||||||||||
| Specifications: | unit:mm | |||||||||||
| Insert Thread Size | Outer Sheath | Inner Sheath | Amour/Brald | code | ||||||||
| M | G | NPT | orlentalon1 | orlentalon2 | SW | H | GL | |||||
| M20x1.5 | G1/2 | NPT1/2″ | 9.0-14.0 | 6.0-10. | 6.0-10.0 | 4.0-8.0 | 0.9/1.25 | 0/0.7 | 24 | 64 | 15 | HX-EX2.M20 /GV₂”/NPT₂” |
| M20x1.5 | G1/2 | NPT1/2″ | 13.0-18.0] | 12.0-16.0 | 9.0-14.0 | 8.0-12.0 | 0.9/1.25 | 0/0.7 | 30 | 65 | 15 | HX-EX2.M20/GV₂”/NPTV₂” |
| M25x1.5 | G3/4 | NPT3/4” | 17,0-24,0 | 15,0-21.0 | 13.0-20.0 | 11.0-17.0 | 1.25/1.6 | 0/0.7 | 70 | 40 | 15 | HX-EX2.M25 /G34″/NPT4″ |
| M32X1.5 | G1 | NPT1” | 23,0-32,0 | 20,0-28.0 | 18,026.0 | 16.0-23.0 | 1.6/2.0 | 0.6/1.2 | 75 | 50 | 15 | HX-EX2.M32/G1″/NPT1″ |
| M40x1.5 | G11/4 | NPT11/4° | 31,0-38,0 | 28,0-35.0 | 25.0-32.0 | 21.0-29.0 | 1.6/2.0 | 0.6/1.2 | 78 | 57 | 15 | HX-EX2.M40/G14″/NPT14″ |
| M50x1.5 | G11/2 | NPT11/2° | 37.0-44.03 | 34.0-41.0 | 31.0-38.0 | 28.0-35.0 | 1.8/2.5 | 0.6/1.2 | 93 | 62 | 15 | HX-EX2.M50/G14″/NPT1/” |
| M63x1.5 | G2 | NPT2″ | 45,0-55,0 | 40,0-50.0 | 36.0-47.0 | 33.0-43.0 | 18/2.5 | 0.6/1.2 | 98 | 70 | 16 | HX-EX2.M63 /G2″/NPT2″ |
| M75x1.5 | G21/2 | NPT21/2° | 58.0-68.0 | 51.0-61.0 | 45.0-58.0 | 42.0-53.0 | 1.8/2.5 | 1.0/1.5 | 102 | 90 | 18 | HXEX2.M75 /G24″/NPT2M” |
| M87x1.5 | G3 | NPT3″ | 67.0-79.06 | 62.0-73.0 | 56.0-670 | 52.0-62.0 | 1.8/2.5 | 1.0/1.5 | 105 | 102 | 20 | HX-EX2.M87 /G3″/NPT3″ |
| M100x1.5 | G4 | NPT4″ | 78.0-89.0 | / | 65.0-75.0 | / | 1.8/2.5 | 1.0/1.5 | 110 | 115 | 20 | HX-EX2.M100 /G4″/NPT4″ |
| PG/G/NPT threads are avallable | ||||||||||||
Customizable size drawings
When installing cable connectors in hazardous areas, selecting the appropriate size is not simply a matter of choosing “larger” or “smaller.” The process requires careful consideration of several factors:
Hoonsun offers a complete range of cable fittings, connectors, and accessories, all UL, ATEX, IECEx, IP68, RoHS, and REACH certified for any industrial or hazardous application. For more information on our industrial cable fittings, please visit our website or official platform.
