Typical applications are Ex e and/or Ex tb rated electrical enclosures such as transformers, motors, generators and junction boxes.
Ex e means increased safety for explosive gas atmospheres, and Ex tb means explosion protection by enclosure for explosive dust atmospheres.
Hazardous Area Zone Classification
Hazardous areas are rated into zones based on the possibility of occurrence of an explosive atmosphere – it is the obligation of the owner or the operator of a facility to ensure that the zone classification is done by authorized personnel.
Hazardous Area Cable Seals
Highlighted zones = Permitted zones for Roxtec Ex products
The Roxtec Ex product range includes a wide variety of pipe and cable seals to handle different cable sizes and openings. The sealing products are designed and certified for use in Zone 1 and Zone 2 for gas (including vapour and mists) and Zone 21 and Zone 22 for dust.
Cable Sealing Standards
Roxtec Ex solutions are tested, approved and certified according to the following standards:
Specialist Distributors of Industrial & Hazarodus Area Equipment to provide Power, Heat, Light & Ventilation to the explosive atmospheres and process industries.
Pemsa has developed a high resistance coating for rejiband® wire mesh tray which provides an excellent resistance to corrosion in wet and aggressive environments.
High Corrosion Resistance
Demonstrated with more than 1000 hours in the neutral salt spray tests and obtained through a new manufacturing process that improves both the barrier effect against the aggressive media and the ability of self healing in damaged areas. With the result obtained in the neutral salt spray test, more than 850 hours, the corrosion resistance is classified as Class 8, according to Table 9 of the current standard BS EN 61537 trays.
BS EN 61537
This International Standard specifies requirements and tests for cable tray systems and cable ladder systems intended for the support and accommodation of cables and possibly other electrical equipment in electrical and/or communication systems installations. Where necessary, cable tray systems and cable ladder systems may be used for the division or arrangement of cables into groups.
Salt Spray Test Duration
Class
Duration
0
–
1
24
2
96
3
155
4
195
5
450
6
550
7
700
8
850
Duration (h) Salt Spray Chamber Chamber Test – acc. ASTM-B117
Certified High Resistance
rejiband® BLACK C8 has obtained the AENOR N Marking (Spanish Association for Standardization and Certification) and the certification IECEE CB Scheme of IEC (International Electrotechnical Commission), garanting the Class C8 of resistance against corrosion, with more than 1000 hours on the Salt Spray Test.
BETTER FEATURES THAN HOT DIP GALVANISED
Hot dip galvanised normally ranges from between 45 to 70 microns mean coating thickness, so it should be Class 5, 6, or 7, having a lower corrosion resistance than BLACK C8.
Aesthetic appearance
The smooth finish is much more aesthetic than that of hot dip galvanised.
No sharp edges or ends
No irregularities or areas with reduced thickness
Black colour provides excellent aesthetics which are suitable for decorative applications, commercial facilities, false ceilings, etc.
Electrical continuity
This coating maintains the electrical continuity of rejiband®, complying with the requirements of BS EN 61537 standard for cable tray system with electrical continuity characteristics. This feature allows bonding to other exposed conductive elements and, in case of a fault, the evacuation of electrical currents to the earth.
The most appropriate coating for Data Centres
BLACK C8 coating avoids the emergence of the phenomenon of Zinc Whiskers, or loosening of filaments of zinc, which can be a serious problem within the electronics of clean rooms in Data Processing Centres.
Increased capacity for selfhealing, or self-repairing, of the protective layer
The characteristics of self-healing, or self regeneration, on scratches, minor defects or in the cutting of the wire, are remarkably better than that of the zinc.
Excellent ductility
It is possible to bend the the tray without causing any damage to the finish. These features retain the properties of flexibility and the forming of accessories with rejiband®, bends, level changes, in any format.
Environmentally Friendly
The BLACK C8 coating is manufactured in a process which significantly reduces energy consumption and waste generation over other coatings which consume more resources like hot dip galvanised.
Full Range of brackets and accessories
rejiband® BLACK C8, product range includes a complete catalogue of accessories and supports, providing a high corrosion resistance and a better visual aspect to the whole installation. This system offers the same corrosion resistance of Class C8 for everything, improving the performance of the system against aggressive environments and enhancing the performance of a hot dip galvanized finish, where accessories and brackets do not reach this classification. The system is complemented by the use of a black colour zinc spray that is suitable for the protection and aesthetic improvement of cut rods and possible damage caused during installation.
Fibre optic cable blowing isn’t a new technique for cable installation and, in fact, it has been in use since the late 1990’s. However, the cable blowing technique may be new to some installers. A range of CBS cable and fibre blowing machines help get the job done with ease for both the seasoned installer or the novice. In this article, we discuss one of the key parameters to a successful installation, the fill ratio.
JetStream Cable Blowing Machine
The Fill Ratio
The fill ratio can be calculated for a single fibre optic cable installed in an innerduct or microduct as:
d2 ÷ D2 < 65%
or
d2 < 65%
D2
The lowercase “d” stands for the outer diameter of the cable, while the uppercase “D” stands for innerduct’s inside diameter.
This means that when the cable outer diameter squared is divided by the innerduct inside diameter squared, the outcome should be less than 65% (or .65) for the most effective cable blowing.
Also, the fill ratio should not fall below 35%, as the cable may have more of a tendency to “kink” in the innerduct due to excessive turbulence.
Likewise, when the fill ratio is greater than 80% it becomes increasingly likely that there is insufficient space around the cable for the viscous drag principle of the air to act on the cable jacket.
The fill ratio is one of the parameters determining how far a fibre cable can be blown.
A larger fill ratio is preferred when the cables are relatively stiff and the duct run is straight.
A smaller fill ratio is typically preferred when there are multiple bends in the cable duct run, allowing more room in the innerduct for the cable to navigate the route.
The installer doesn’t specify the innerduct or the cable, but the installer can easily calculate the fill ratio and determine if the ratio is in the “sweet spot” or not.
A fill ratio out of range may explain why the cable installation didn’t proceed as planned.
Thorne & Derrick distribute an extensive range of Cable Pulling & Laying Equipment to enable the safe installation of fibre and copper cables within the telecommunications industry. Safely installed cables reduces operational and maintenance requirements to the network and reduced service interruption to telecom cables, wires, ducts, cabinets and exchanges – products include cable spiking tools, conduit rods, cable lubricant, cable socks and rollers.
uploaded by Chris Dodds - Sales Marketing Manager Thorne & Derrick International
MV Medium Voltage Overhead Lines 10-400kV
P&B Weir together with Thorne & Derrick introduce an innovative new electrical safety product to the UK market – ALADIN is an individual voltage alarm with headlamp suitable for use with MV overhead lines in the voltage range of 10-400kV.
The electrical safety device is designed like a headlight to be attached on helmets or hard hats and complies with European Directives EN 61000-6-2 and EN 61000-6-4.
ALADIN is extensively used throughout the Rail, Renewable, Data Centre, Transmission & Distribution, Oil & Gas and Utility sectors for safe working around Medium & High Voltage Electrical Equipment, Switchgear, Substations, Cables & Overhead Lines with typical operating voltages 11kV 25kV 33kV 66kV 132kV 400kV.
Improved electrical safety levels for workers operating near live equipment
The personal electric field detector combined with professional headlamp provides the user with an audible safety alarm offering an additional level of safety for workers operating near energised equipment e.g during maintenance, rescue operations, painting and pruning.
The frequency of the audible alarm increases as the detected electric field increases. Example situations where the ALADIN provides improved electrical safety:
Misunderstanding: the operator approaches a danger zone
Voltage unexpected return. mistake during an operation on disconnected network
Involuntary approach: quick move in direction of energised area during operation
Diversion: the operator is distracted and moves towards a high potential energised conductor unconsciously
Calibration & Testing | The Aladin has an auto-test function but can also be checked by placing it in contact with an unshielded low voltage element such as a wall outlet or power cord.
ALADIN is suitable for outside and indoor medium voltage electrical equipment.
ALADIN is supplied in a cardboard box with a universal charger and micro USB cable, interface for fitting to a helmet, an elasticated band and four hooks, a reinforced protective case and users’ instructions.
ALADIN – MV Overhead Lines 10-400kV
ALADIN Advantages
360° detection around the wearer : the ideal position of the detector on top of the protective helmets makes detection of an electric field equally effective, whether it is located in front of or behind the wearer
Smart Mute exclusive feature: smart alarm:
– It is used to silence the warning sound once at working place, the device is remaining in vigilance and still measuring the electric field
– The warning sound will automatically restart in case of increase of the level of detected electric field (closer or sudden presence of voltage)
– Acts as an additional fencing which can be set at the working place
Wide voltage range from 2kV to 400kV
Integrated professional dual-beam LED headlamp
Compact and lightweight
No influence of the electromagnetic fields
2 types of light are available :
− 1 light for remote vision (overhead lines, poles, …)
− 1 light for closer vision (walking trip, working place, …)
Light and compact device
Rechargeable by standard micro USB 5 V plug
ALADIN
Technical Specifications
Electric Field Detector
Detector Operating Range
2kV to 400kV
Reference Detection Distance
2 metres from a conductor located at a height of 1.5m at a voltage of 1 kV (live-earth) Detects the electric field level but does not measure the distance.The higher the voltage, the greater the distance at which it may be detected. Detection of a 50Hz and 60Hz electric field at 360° around the wearer
Autonomy
Up to 80 h
Battery Capacity
2000mAH
Temperature
-25°C +55°C
Humidity
Up to 96%
Dimensions
87 x 60 x 34mm
Weight
98g
Dual Beam LED Headlamp
Dual Beam LED Headlamp
2 light beams : long range beam and broad beam (with 3 intensities)
Light Intensity
From 20 lumens to 140 lumens
Lighting Distance
Up to 20/30 m
Autonomy
Up to 50 h (with active detection)
IP65 Protection
Protection against dust and water splashes
Power Supply
Lithium Polymer battery, rechargeable using a micro USB cable
Individual Voltage Alarm With Headlamp For MV Overhead Lines 10-400kV
The Aladin Range of Personal Alarms for Voltage Detection
ALADIN provides extra safety level for workers operating near energized equipment (during construction, maintenance, rescue operations, painting, pruning) up to 400kV.
Thorne & Derrick provide competitive prices and fast delivery from stock for the complete range of PB Weir substation earthing and transmission line earthing equipment.
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
Since 1997 Silver Fox has been implementing a continuous schedule of software development. Additionally, they often receive feedback from engineering customer across the globe and wherever possible they will integrate these ideas into future releases.
The unique common platform makes your work so easy!
Whether you are on the Basic or Advanced level, because of the unique system you can always upgrade seamlessly to a higher level, without wasting your initial investment on the software or printer. You will just pay the current incremental cost plus a small admin fee.
January marked the release of the new and very much improved Silver Fox Labacus® Innovator softwareversion 5.1.0.0
Silver Fox Labacus Innovator Software
So, what’s in it for you?
Print fine-tune
Graphical fine-tune – drag and drop image to where it appears on your test print and your software will automatically adjust the print to the correct position
Automatic prompting to print a test page (can also be switched on/off by the user)
Templates
Complete range of official Belden LabelFlex® templates included on all levels
Updated official CommScope® templates included on all levels
The same Labacus® Innovator software that drives the Fox-in-a-Box® also includes all the Silver Fox laser templates as well as Farnell, CommScope and Belden templates.
The Silver Fox solutions are designed to save you time and money. Even so, sometimes, your resources may be particularly limited and critical. In these instances, they can help you as well. Silver Fox offers a Pre-Print service, helping release valuable resources for your project.
Silver Fox can pre-print your labels then deliver to UK (or international) sites, making a very real contribution by helping you meet your tight project deadlines.
Tammy Page, Marketing Manger said “Silver Fox is uncomplicated labelling solutions because of 40 years of simplifying the complex.”
Thanks to Chris Canavan at Silver Fox for providing some product training for AJ & Charlie at our Bristol office.
T&D are proud to support UK manufacturing and develop new business opportunities in the power, rail, renewable, oil and gas and industrial market sectors.
“Everybody at Silver Fox are looking forward to working even closer with the Sales Team at Thorne and Derrick to build further on our already successful working partnership.”
“Since 1985 Thorne and Derrick have been a proactive, hard-working and well-respected distributor of LV MV HV Cable Installation, Jointing, Substation & Electrical Eqpt, who are committed to professional customer support. We are proud to include them as part of our distribution network,” comments Tammy Page, Marketing Manager (Silver Fox).
Silver Fox are leaders in UK manufacturing of cable labelling solutions, delivering innovative, durable and efficient systems for Data & Telecoms, Electrical, Transportation and Energy industries worldwide.
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
