Sunday, July 20, 2008
Wednesday, June 25, 2008
Cable glands extend to ATEX applications
Amphenol Industrial Operations has launched a range of explosion-proof and industrial cable glands designed to provide sealing capabilities where cable passes through bulkheads or enters electrical equipment and junction boxes The new cable gland product line extends from general duty industrial products through to ATEX approved components meeting the requirements of Zone 1 and 2 rated applications, and including glands to accommodate any cable type - including armour braided
This article was originally published on Engineeringtalk on 29 Mar 2002 at 8.00am (UK)
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The Radsok contact and connector series is now available in smaller package sizes that provide a lower insertion force than larger connectors, while providing increased durability.
This comprehensive range of high performance cable glands is offered in brass and stainless steel materials and encompasses a wide choice of sealing and retention options and specifications.
It has been developed to offer sealing solutions for industrial equipment manufacture and installation for all environments, from the benign to the most hazardous areas, and is ideal for equipment going into oil and gas exploration, production platforms, chemical plant and heavy-duty machinery.
The glands have a broad operating temperature range from -40 to +80C and are suitable for both indoor and outdoor use.
Many of the products carry SIRA/ATEX certification, CSA approval, NEMA rating and provide sealing capabilities up to IP68 deluge resistant.
Amphenol offers a complete line of accessories including locknuts, earth tags and washers, and for full system compatibility in explosive-proof applications the Ex glands can be used in conjunction with Amphenol's renowned Starline Ex heavy duty cylindrical connectors.
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Tuesday, June 24, 2008
Saturday, May 10, 2008
Sunday, May 4, 2008
Sunday, April 27, 2008
The GMTC Guide to BS EN 50262 and BS 6121 (new edition), Parts 1 and 5
the new standards for Electrical Cable Glands, their accessories and use
The Gland Manufacturers Trade Committee (formerly Technical Committee) was founded in 1975, and represents the cable gland manufacturers within the UK. It is represented on several UK and European standards committees, and collectively ensures the safe design manufacture and installation of cable glands.
Issue 3 dated 10th December 2005.E&OE. This page and subsidiary pages are for information only. Disclaimer.The official version of this document is the PDF version.
Contents:
New Standards for Cable Glands
Details
New and Old Standards
Introduction
Timing of Changes
Structure
The New Methodology
CE Marking
Philosophy
More Information, More Decisions
Industry Interpretation of CE Marking Requirements
Test Requirements
Increased Flexibility of Design
Amendments to EN 50262
Classifications
What is a Cable Gland
Information
CE Marking
Hazardous Area Products
Pitfalls
References
Amendments
Wednesday, April 16, 2008
Thursday, April 10, 2008
Monday, March 17, 2008
the new standards for Electrical Cable Glands
The GMTC Guide to BS EN 50262 and BS 6121 (new edition),
Parts 1 and 5
the new standards for Electrical Cable Glands, their accessories and use
The Gland Manufacturers Trade Committee (formerly Technical Committee) was founded in 1975, and represents the cable gland manufacturers within the UK. It is represented on several UK and European standards committees, and collectively ensures the safe design manufacture and installation of cable glands.
Issue 3 dated 10th December 2005.E&OE. This page and subsidiary pages are for information only. Disclaimer.The official version of this document is the PDF version.
Contents:
New Standards for Cable Glands
Details
New and Old Standards
Introduction
Timing of Changes
Structure
The New Methodology
CE Marking
Philosophy
More Information, More Decisions
Industry Interpretation of CE Marking Requirements
Test Requirements
Increased Flexibility of Design
Amendments to EN 50262
Classifications
What is a Cable Gland
Information
CE Marking
Hazardous Area Products
Pitfalls
References
Amendments
Tuesday, March 11, 2008
Cable Glands In Hazardous Areas
Introduction
Page 1 of 2
CMP Cable Glands - In and Around the Hazardous Area
Whilst taking into consideration all of the relevant industry guidelines and codes of practice applicable to the particular Hazardous Area, the additional notes found on the following pages are provided to help the user in working specifically with CMP Cable Glands.Sometimes regarded as a low priority component and often in practice the last thing to be considered when construction materials and cables are being sourced, Cable Glands are “safety critical” elements in the overall electrical system of any Hazardous Area plant or installation.
Their importance should not be under estimated. After all, selection of the Cable Gland product that affords the best degree of long term environmental protection, will inevitably lead to fewer operational problems arising in service. On the other hand a ‘fit for purpose’ minimum standard option may well result in unavoidable costs being drained from future maintenance budgets, which far outweighs the apparent ‘saving’ generated in the initial selection process.
Add to this the owner or operator’s duty and responsibility in respect of Health and Safety and particularly in areas where there is a risk of explosion, the argument for getting it ‘Right First Time’ is a very strong one and is applicable to all electrical apparatus including Cable Glands.
There are clearly differences between product design standards in Europe and North America.The examples given here, unless otherwise qualified, are based on the practice adopted in Europe.
Monday, March 10, 2008
Sunday, January 6, 2008
PURCHASE OF STANDARDS FOR CABLE GLANDS
EN 60079-0:2004 and EN 60079-1: 2007 For Exd CABLEGLANDS
EN 13980 for QUALITY SYSTEM
The Standards may be purchased from
BSB Info
B 44, South Extension Part I
New Delhi 110 049
011-24611991 / 24634222
Saturday, January 5, 2008
TYPES of CABLE GLANDS
EN 50262
The EN 50262 Standard "Metric cable glands for electrical installations" has been fully implemented since March 2001.EN 50262 specifies the conditions and inspections applicable to the design and manufacture of metric cable glands.
It applies only to complete cable glands as delivered by the manufacturer or supplier and does not cover individual components in the cable gland. EN 50262 simply fixes the thread dimensions for metric cable glands as structural dimensions in the context of the Standard, these being related to the EN 60423 Standard.
All other dimensions are determined by the manufacturer.The tests and inspections defined by EN 50262 are for type-approval purposes.
If the manufacturer or supplier inspects cable glands in accordance with EN 50262, the documentation produced must provide the characteristic values and information necessary for correct application and installation.The classification of metric cable glands is determined in relation to an inspection that defines materials, mechanical and electrical properties and resistance to external influences.
The supplier must provide the following information: tightening range, thread length, type of anchoring, shock-resistance category, IP code and temperature range.
A marking must be placed in a suitable position on the cable gland.The logo and manufacturing mark of the manufacturer or supplier, together with an identification of the product, must be clearly and permanently shown in a visible position. Otherwise, the product identification may be shown on the smallest packing unit.
Once the inspection is complete, the identity and conformity of the characteristic values and information must be recorded and certified.
Cable glands with P threads may continue to be produced but existing type approvals, such as those of VDE, are no longer valid and cannot be applied to the cable gland concerned. They may continue to be sold subject to using, as a reference, the UTE C 68-300, 311 and 312 Guides produced by the Comité Electrotechnique Français.
Comparison of thread diameters
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PURCHASE EN 50262
Thursday, December 20, 2007
Power Cables
Contents
1 History
2 Construction
3 Named cable types
4 Flexible cables
5 See also
6 References
7 External links
//
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Cable Size and Current carrying capacity
Wire and Cable glossary
Indian Electricity Supply Safety Regulations
Cable Gland Selector chart
Current carrying capacity
Wire Sizes
Cables Wires and Conductors
A wire is a single rod of metal with a small ratio of diameter to length.
A conductor is a wire suitable for carrying an electric current.
A stranded conductor is a conductor made up of a group of wires. These wires are usually twisted together.A cable is either a single stranded conductor or a combination of conductors insulated from one another (a mutlti-core cable).
Cables in the oil and gas and petrochem industries are generally always insulated and often protected with an armoured sheath. In general, stranded conductors are more flexible and less susceptible to fatigue-failure than solid wires.
Cable Sizing
Wires can carry only a limited amount of current safely. If the current flowing through a wire exceeds the current-carrying capacity of the wire, excess heat is generated. This heat may be great enough to burn off the insulation around the wire and start a fire. An increase in the diameter, or cross section, of a wire conductor decreases its resistance and increases its capacity to carry current.
Other reasons for choosing an increased cross sectional area of wire is to limit volt drop along its length.
Limitations
Wires and cables are made in standard diameters. When selecting cables it is common select the next standard size up from that calculated.
The terminals (e.g. Weidmuller, Phoenix etc) into which the cable or wire will terminate are made to accomadate a range of sizes. Be aware of any limitations this may place on your selection.
Dimensions
Wire diameters are often specified in American Wire Gausge (AWG) rather than in mm or inches. The charts below give dimensions of common diameters and the corresponding AWG.
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Cable Sizing Chart
Wire gauge and current limits
Standard practice for selection of wire and cable size
Monday, December 17, 2007
Wednesday, December 12, 2007
Requirements for CE ATEX Marking of Cable Glands

Hydraulic pressure test
Pull test
Ingress protection
Corrosion resistance
temperature Rating
Exd and Exe cable glands specs are listed in ISO/IEC 600079-1 and 60079 - 7
Caution for users:
Before mounting the cable gland on the Ex enclosure,
Check the cable entry with GO/NO GO Gauges
The Cable Gland is an Ex-component to be used in conjunction with Ex enclosure. If the cable gland fit is not OK, the explosion protection will be invalidated.
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Sunday, November 25, 2007
FAQs
CABLE GLAND SELECTION TABLE (only for guidance)
please contact us for selection
Tuesday, October 30, 2007
Facts about Cable Glands
- To firmly secure cable entering a piece of equipment
- To maintain the ingress protection of the piece of equipment (minimum of IP54 for 'e' and 'n' type enclosures.
Where the enclosure wall thickness is less than 6mm a sealing washer or thread sealant will be required to maintain IP54 protection)
- To maintain earth continuity between a piece of equipment and any armouring in the cable
- To ensure containment of an internal explosion in flameproof equipment
British Standard for Cable Glands
The Code of Practice for selection, installation and inspection of cable glands used in electrical installations is covered in BS 6121-5 1989 Mechanical cable glands.
Selecting Cable Glands
- Electrolytic action between two dissimilar metals (gland and enclosure). Shortened lifetime for the glands and the cable entries can result if incompatabile materials selected.
- Degreee of Ingress Protection required
- Certification of gland for use in Hazardous areas
- normal or barrier gland required
- Size of cable being terminated
- Size of cable entry on peice of equipment
What is a Barrier Gland ?
Barrier glands are similar to normal glands, except a compound sealant material is used to ensure the inside of the cable is gas tight as well as the outside.
When Should a Barrier Gland be Used ?
BS EN60079-14 Electrical apparatus for explosive gas atmospheres Part 14
- Electrical installations in hazardous areas (other than Mines) provides a selection process for deciding if a barrier gland is required. There are various options to consider, however if the hazardous gas require IIC apparatus, or if the volume of the enclosure is greater than 2 litres then it is likely you will need to use a barrier gland.
Gable Gland Sizing
A rough gland sizing table is provided below, however reference should be made to the British Standard referenced above.
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When selecting a Cable Gland one must always check the following:
1. CHECK: Cable type, size, dimensions and voltage.
2. CHECK: Environmental conditions, dust, moisture, corrosive attack.
3. CHECK: Hazardous areas classification and that the relevant specification is adhered to.
4. CHECK: Thread type and size of gland entry.
5. CHECK: The material of the enclosure (avoid Bi-metallic corrosion).
Explosion-Proof Cable Glands
-- Amphenol Industrial Operations, a manufacturer of high reliability connectors and interconnection systems for the industrial markets, has introduced a new line of explosion-proof cable glands designed to provide watertight sealing capabilities where a cable passes through bulkheads or enters electrical equipment and junction boxes.
The new EX Cable Glands are ideal for a wide variety of indoor and outdoor applications, including oil and gas exploration, production platforms, pharmaceutical, chemical and paint manufacturing, and machine and heavy equipment. In addition, the cable glands provide grounding, bonding, and insulation capabilities, as well as strain relief at the electrical connection.
EX Cable Glands accept any type of cable, including armor-braided cable.
With a standard seal, they are rated for operating temperatures from -20°C to +85°C (-4°F to +185°F);
with a silicone seal, for -60°C to +180°C (-76°F to 356°F).
The glands have an impact rating of at least 7Nm.
The cable glands are available in brass or stainless steel and in gland sizes from 16 to 100, incorporating metric thread sizes from M20 to M100x2 as well as NPT (national pipe thread) sizes from 1/2" through 4".
The new line of cable glands are ATEX approved for Zone 1 and Zone 2 applications, IEC-rated up to IP68 (resistant to continuous immersion in water)
and NEMA-rated 4X (resistant to powerful water jets).
In addition, they are approved by the CSA (Canadian Standards Association).
EX Cable Glands can also be used with Amphenol's Starline EX connector product line for explosion-proof interconnect solutions.
A complete range of accessories is available, including locknuts, earth tags and washers.Pricing for EX Cable Glands starts at $10 per unit. Delivery is four to six weeks ARO.For more information, please contact Robert Fralicker, Product Manager, Amphenol Industrial Operations, Amphenol Corporation, 40-60 Delaware Ave, Sidney, NY, 13838-1395. Tel: 607-563-5124; Fax: 607/563-5157; E-mail: rfralicker@amphenol-aio.com; Web: www.amphenol-industrial.com.
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