Cable Hooks | Cablesafe | UK Stockists & Suppliers
Cable Safety Hook Extreme
Cable Management for Temporary Electrical Cables
CableSafe Safety Hooks are used in cable management while conducting maintenance, turnarounds, construction works and industrial works. The Safety Hook Extreme is used as an electrical safety product to suspend cables and hoses of the work floor.
Multinationals prescribe the use of Safety Hooks in company procedures to adhere to the highest safety practices.
CableSafe Cable Hooks are ‘S’ shaped plastic cable hangers made from GRP (glass reinforced polyester) which are used to support, suspend and retain all types of electrical cables (LV-HV power, control, instrumentation), welding cables, temporary lighting extension cords and hoses in the offshore energy, data centre, marine, petrochemical, mining, rail, chemical and power industries.
Safety Hook Extreme
The Safety Hook Extreme is an advanced specification and high performance version of the standard industrial cable hook manufactured with glass reinforcedPBT and is UV stabilized, Flame Retardant(Class: 94V-0, Flame Class Rating 3) and Cold Weather rated.
Safety Hook Extreme
While the Safety Cable Hook is a high quality product, CableSafe engineering team found a way to improve it. That is why we are proud to introduce our new Safety Hook: the Safety Hook Extreme. The development of this Safety Hook Extreme is done in cooperation with a Norwegian oil & gas multinational.
The Safety Hook Extreme is manufactured with glass reinforced PBT and is UV stabilized, Flame Retardant (class: 94V-0, Flame Class Rating 3) and Cold Weather rated.
British Standard recently adopted the Requirements for Electrical Installations [BS7671:2018] for the electrical design industry. This standard is developed after the death of two firefighters at Harrow Court, Hertfordshire, in 2005.
The two firefighters got entangled as a result of the collapse of an electrical installation during a fire. The implemented standard states that it requires cables to be adequately supported against their premature collapse in the event of a fire. Installations designs from 2019 onwards have to comply with this new standard. This has implications for personnel involved with design, erection and verification of electrical installations. The Safety Hook Extreme is developed with this standard in mind.
OSHA
The Occupational Safety and Health Administration (OSHA) is an agency of the United States Department of Labor. OSHA claims that fire safety must be everyone’s job at a worksite.
Employers should train workers about fire hazards in the workplace and on what to do in a fire emergency [OSHA Part 1926.150, Subpart F].
During a fire hazard it is of vital importance to suspend cables and hoses of the work floor to prevent slip, trip and fall accidents. That is why we made the Safety Hook Extreme flame retardant.
CPR
In the European Union (EU), the product ‘cable’ was added to the Construction Product Regulation (CPR) in 2017. Thereby, creating an obligation to classify cables according to fire
behaviour in order to be able to market them in Europe for use in buildings [NEN8012:2015]. The EU recognises the danger of fire due to unsafe cables. Cables must be flame retardant,
so should Safety Hooks be.
Different Sizes
The Safety Hook Extreme is available in 4 sizes: 15 inch which holds 265 kg, 12 inch which holds 190 kg, 9 inch which holds 55 kg and 6 inch which holds 40 kg static load. The Safety Hook Extreme colour is yellow, as this is often used in safety equipment.
CableSafe Cable Hooks
Cable Hooks features & Specifications
CableSafe safety hooks are available in four sizes 6, 9, 12 and 15 inches and can carry loads of up to 650g (1.43lbs) – cable hooks are fire retardant, non-conductive and have very high UV resistance ensuring long service lifetime of over 25 years of active use in heavy industries.
A hole in each end of the hook enables the user to secure and fix the cable hook itself by means of a cable tie wrap – cable hooks are suitable for bundled cables.
CableSafe S-hooks help with cable management & housekeeping
S-hooks are easy to use, cables & wires are cleared quickly
Four sizes: 6”, 9”, 12”, and 15” [approximately 15, 23, 30, 38 cm]
Easily secure loads using a tie-wrap through holes in end of the cable hook
S-hooks do not conduct electricity or heat
Durable: over 25 years of active use in heavy industries
Cable hooks are sold in batches of 25 pieces – minimum order – delivered from stock
For quantities of 500 pieces or more (per type) it is possible to receive the hooks with the company name engraved in the cable hook or in a special colour. Production time 3 to 4 weeks.
Selection of Cable Hooks
The CableSafe® Safety Hooks are available in 4 sizes
Yellow | Glow-in-the-dark (Minimum order quantity 25 hooks)
White | Black | Blue | Green | Red (Minimum order quantity of 500 hooks)
CABLE SAFETY HOOKS & EQUIPMENT
OSHA maintains general industry regulations on walking and working surfaces that guard workers against hazards and the risk of injury including clutter, protruding objects and wet conditions. These Health & Safety hazards can harm everyone in a facility, regardless of title or job responsibilities.
Slips, trips, and falls cause nearly 700 fatalities per year and many more injurious accident in the workplace according to the Bureau of Labor Statistics. The CableSafe range of products ensure all cables, wires and hoses are suspended off the ground especially in high traffic work areas such as production floors, machinery spaces and deck level areas where maintenance is being carried out.
CableSafe Safety solutions are critical cable essentials and are well proved construction safety products.
THORNE & DERRICK are national distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – we service UK and global businesses involved in cable installations, cable jointing, substation earthing, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
Contact us for 3M Electrical, ABB, Alroc, AN Wallis, CATU Electrical, Cembre, Centriforce, CMP, CSD, Cubis Elastimold, Ellis Patents, Emtelle, Euromold, Filoform , Furse, Lucy Electric & Zodion, Nexans, Pfisterer, Polypipe, Prysmian, Roxtec, Sicame, WT Henley.
The connectors manufactured by Euromold are provided with a capacitive test point: the voltage detection point (VD point). This enables a local check to confirm that the product is de-energised prior to disconnection (use a high resistance test device – approx. 250 MΩ).
The capacitive test point consists of a metallic insert, moulded into the insulation and electrically connected to a convenient external terminal.
➡ Thorne & Derrick can support the specification and supply of the correct MV HV connector– heat shrink, cold shrink and push-on joints and terminations are also available, contact us with your requirements or technical queries.
Thorne & Derrick have an International Distribution Agreement with Nexans Power Accessories UK and are their main stockists and suppliers for their range of Heat Shrink Joints & Terminations up to 33kV as well as their Euromold connectors.
Under normal operating circumstances this terminal is earthed by its conductive rubber cap. The cap must be removed prior to testing. When applying the test device, a capacitive potential divider is effectively established.
The components of which are:
Ctc: between test point and line potential
Ctg: between test point and earthed conductive screen
Cm: representing the capacity of the detection apparatus
The voltage available at the test point is directly proportional to the line voltage depending on the capacitance ratio. Although relatively high voltages can be present on the test point after removing the conductive cap, the overall available energy is minimal and any potential would disappear instantaneously if accidentally touched by an operator or other personnel. The current transfer would be a fraction of a micro Ampere and imperceptible to human touch.
Key:
Key Conductive rubber cap
Metallic insert (capacitive test point)
EPDM conductive screen (earth potential)
EPDM insulation
EPDM internal screen (line potential)
Metallic insert (line potential)
Separable Connectors
Euromold 152SR – 158LR 400LR
The Euromold152SR straight connector with 250A current rating is designed for Interface A and covers voltages from 12kV to 24kV with a maximum conductor size of 95sqmm.
The Euromold 480TB tee connector with 630A – 1250A current rating is designed for Interface C and covers voltages from 12kV to 42kV with a maximum conductor size of 300sqmm.
The Euromold 909TB tee connector with 250A current rating is designed for Interface F and covers voltages from 12kV to 42kV with a maximum conductor size of 1200sqmm.
Euromold 909TB plug-in tee connectors can be supplied as a coupling connector (909PB) and compatible with plug-in type epoxy bushings– all suitable for use with Interface F type bushings on SF6 gas-insulated switchgear.
Nexans Cable Accessories
Nexans manufactured Cable Accessories are in extensive service throughout the UK DNO power grid – the Euromold connectors are approved and are approved by several DNO/IDNO operators dependent on the product, voltage and network.
The JTS Joints and MONO Terminations are increasingly preferred and adopted by NERS Accredited Independent Connection Providers (ICPs) working on 11kV private networks.
For approximately 40 years Euromold has been formulating and moulding rubber compounds. The knowledge and skill gained over this extensive period has overcome many obstacles and are a great asset for the future of the brand and the Euromold connectors.
The resultant hydrocarbon-based elastomers have all advantages of general purpose rubbers but its performances excel in electrical strength and resistance to environmental conditions.
Thorne & Derrick have an International Distribution Agreement with Nexans Power Accessories UK and are their main stockists and suppliers for their range of Heat Shrink Joints & Terminations up to 66kV as well as their Euromold connectors.
OZONE/CORONA RESISTANCE
The outstanding resistance to corona is due to the ability of the EPDM rubber to withstand ozone and other chemical compounds formed by discharges and its resistance to heat.
CHEMICAL RESISTANCE
Products made from EPDM rubber resist attacks made by many acids, alkalis, detergents, phosphates, esters, ketones, alcohols and glycols. They give particularly outstanding service in the presence of hot water and high pressure steam. Like all hydrocarbon-based elastomers, EPDM is not resistant to hydrocarbon solvents and oils or chlorinated hydrocarbons.
RADIATION RESISTANCE
EPDM connectors are also installed in nuclear containment areas.
RESISTANCE TO MECHANICAL ABUSE
EPDM rubber has good resistance to compression, cutting, impact, tearing and abrasion over a wide temperature range.
ELECTRICAL PROPERTIES
Typical Values
EPDM Connectors
Silicone
Insulation
Conductive
Insulation
Dielectric strength (kV/mm)
33
–
24
Dielectric constant
2.7 to 3.1
–
2.6
Dissipation factor (x 10-3)
2.5
–
4
Volume resistivity at 20 °C (Ohm-cm)
1014
50
1015
OTHER Euromold PROPERTIES
Typical Values
EPDM Connectors
Silicone
Insulation
Conductive
Insulation
Specific gravity (kg/dm³)
1.33
1.12
1.15
Tensile strength (N/mm²)
4.8
11
8.5
Shore hardness (Shore A)
65
80
47
Elongation (%)
400
450
700
Abrasion resistance
good
excellent
poor
Heat ageing
good
good
good
Temperature range (°C)
-60 to +130
-60 to +130
-80 to +200
Resistance to:
-U.V.
good
good
good
-Ozone
excellent
excellent
excellent
-Sunlight
outstanding
outstanding
outstanding
-Water absorption
very good
very good
excellent
-Solvent
poor
poor
poor
-Hydrocarbon oil
poor
poor
good
-Silicone oil
good
good
poor
RESISTANCE TO THE ENVIRONMENT
EPDM rubber has properties comparable with the best speciality elastomers in resistance to weather. Accelerated life and salt spray tests suggest excellent properties which have been proven in practice by more than 40 years experience in widely varied applications all over the world. Silicone rubber has outstanding long-term resistance to weather in aggressive environments (industrial, coastal and desert climates).
RESISTANCE TO WATER
Water has little effect on the properties of EPDM hydrocarbon rubber. Even long immersion in hot water results in minimal loss of tensile strength. Tests also show a very low degree of water absorption. Silicone rubbers retain their surface hydrophobicity which is a considerable advantage for outdoor applications.
INTERNATIONAL PROTECTION CLASS
By design, Euromold connectors are protecting live elements of the connection against ingress of dust and water. The protection class per IEC 60529 is IP67.
PROPERTIES OF SILICONE LUBRICANT
The high viscosity silicone grease has been chosen for both its lubrication and dielectric properties. It is used as a lubricant when installing all premoulded rubber accessories on epoxy bushings as well as on the core insulation of dry cables.
Its selection is the result of several years of evaluation by Euromold of many types of silicone grease. Silicone grease displays a high level of long-term lubricating stability avoiding any ageing effects (e.g. the risk of sticking).
It also offers excellent dielectric properties assuring good performance at high voltage interfaces. In addition, the grease contributes in making interfaces watertight. It is completely compatible with all premoulded rubber accessories as well as with polymeric insulated cables.
USES
Use of this grease has proven to be of value in the installation of accessories in series and for operations such as greasing interfaces after disconnection. The installation instructions included in each product package detail clearly the application of the silicone grease.
ELECTRICAL STRESS
ELECTRICAL STRESS IN CABLES
The design and construction of screened power cables is primarily based on two types of electrical stress – a radial stress which can be represented by flux lines and a longitudinal
stress on the surface of the insulation where the screen has been removed. (Fig. 1).
ELECTRICAL STRESS RELIEF
When the semi-conductive screen is cut, the electrical field distribution changes radically. The surrounding air and the dielectric material in the vicinity of the cut screen become overstressed (Fig. 2) and breakdown of the cable will soon occur. To avoid this, we control the equipotential lines by installing a termination with a stress cone (Fig. 3), a termination
with linear stress relief (Fig. 4) or a separable connector (Fig. 5) at the end of the screen.
The terminations will make sure that equipotential lines are sufficiently far apart when they finally emerge into the air and that they will not cause ionization. The separable connector keeps the equipotential lines inside the cable/connector assembly in a controlled way. This stress relief is automatically built into all the accessories by the precision moulding of conductive and/or insulating EPDM/silicone rubber.
Nexans Cable Accessories
Nexans manufactured Cable Accessoriesare in extensive service throughout the UK DNO power grid – the Euromold connectors are approved and are approved by several DNO/IDNO operators dependent on the product, voltage and network.
The JTS Joints and MONO Terminations are increasingly preferred and adopted by NERS Accredited Independent Connection Providers (ICPs) working on 11kV private networks.
Surge Counters are used to monitor the health of Surge Arresters and protect against potentially damaging events which could lead to deterioration and ultimate overload. It is important to also schedule regular checks of surge arresters including visual inspection and diagnostics to detect and prevent a costly medium voltage power outage.
Well-designed and tested, ABB surge arresters are maintenance-free and can reasonably be expected to have a long service life. However, the condition of these surge arresters should also be monitored to ensure the most ultimate protection against a costly unplanned power outage. This can be achieved using the ABB EXCOUNT range of surge counters and monitors.
Surge Counters
Surge registration
The primary reason for the use of surge counters on modern gapless ZnO arresters is to check if a particular transmission line or phase suffers from an exceptionally high number of overvoltages leading to arrester operation — lightning faults on a line, for example. If this is the case, whilst it validates the need for the arresters, use of some preventative counter measures may be warranted to limit the number of surges. A sudden increase in the counting rate may also indicate an internal arrester fault, in which case the arrester should be investigated further.
However, simple surge counters tell only part of the story, as they only register the number of surges according to their operating characteristic. The user therefore has no way of telling the magnitude of the surge and if it was significant, nor when it occurred and if it was coincident with a system event.
Leakage current measurement
Surge counters can be complimented with the substation facility to measure leakage currents (total and/ or resistive), with the intention of monitoring and diagnosing the condition of the arrester and its state of fitness for continued service. However it is important to understand the validity of the information provided.
At continuous operating voltage (Uc), a metaloxide varistor acts as a capacitor, leading to a predominantly capacitive component of current and a significantly smaller resistive part. For a complete surge arrester, the capacitive current is further dependent on stray capacitances, pollution currents on the insulator surface, number of varistor columns in parallel and the actual operating voltage. Meanwhile the small resistive component of the leakage current is temperature and voltage dependant.
Since the capacitive component of the current dominates so greatly, the total leakage current measured on a basic mA-meter will be very sensitive to the installation; making interpretation of the readings difficult. Furthermore, the capacitive current does not change significantly due to deterioration of the voltage-current characteristic of the surge arrester. Consequently, measurement of capacitive current cannot reliably indicate the condition of metal-oxide arresters. Nevertheless, increasing values may be of some use in indicating that cleaning of the insulators is necessary.
Instead, it is generally recognized (IEC 60099-5) that the only reliable indicator for the condition of a gapless arrester that can be assessed during normal service is to measure the resistive component of the leakage current (or estimate it from the 3rd harmonic).
The obtained value may then be compared with the maximum allowable resistive current as given by the manufacturer under prevailing service conditions i.e. temperature and applied voltage.
If a metal-oxide varistor ages or is damaged by impulses etc, the arrester resistive leakage current, and hence power losses, increase permanently. This may result in an increase in temperature, which in turn, increases the leakage current and so on until a so-called thermal runway occurs. Early detection of a possible harmful increase may prevent a failure and subsequent unplanned shutdown. Hence, to provide true diagnostics, a good monitor must be able to detect the arrester leakage current and isolate and measure the resistive component flowing internally.
EXCOUNT Surge Counters | ABB
Diagnostic plan
A surge arrester does not contain any moving parts or items that can break.
Consequently there is nothing to maintain, adjust, correct or repair, which is why there is normally no need to perform any form of periodical checking or monitoring. In general, a correctly chosen and installed arrester is maintenance free during its entire lifetime. A correctly chosen arrester in this context means that its electrical and mechanical characteristics are matched to actual service conditions.
Nonetheless, since external factors can place stresses on the arrester, potentially leading to its deterioration and ultimate overload, it may be prudent to draw up a schedule for regular checks. Such consideration is all the more important if an unplanned outage is unacceptable for reasons of system stability or economics. The older the arrester, the more regular these checks may need to be, since the statistical risk for overload increases with age.
As a guide, the following strategy is proposed to be made at regular intervals as required and determined by site availability and importance:
Visual inspection and possible cleaning
Diagnostics in advance of the designated lighting season and thereafter following periods with bad weather conditions.
Diagnostics after special fault conditions causing flashover in the network or TOV’s of high amplitude and/ or long duration.
Because of their nature, old-style gapped arresters should be removed as soon as possible as part of a scheduled replacement program. Their age and inherent design does not warrant detailed evaluation. Early models of gapless arresters may require additional visual checks to look for signs of mechanical or physical deterioration as well as monitoring of the internals. Newly purchased arresters can also benefit from diagnostic monitoring right from first installation since this permits easy trend analysis to detect potential deterioration later on in its service life.
EXCOUNT draws upon over 80 years of experience by ABB in the development of arresters and associated accessories. Safety, functionality and longevity are key elements which are given priority in selection and design of components. The EXCOUNT range has not neglected short-circuit safety which lies inherent in the design concept.
Minimized risk for injury in case of accidental contact during surges
Maintenance Free
Sealed components
Requires no external power supply (except for EXCOUNT-III)
Long Life
Moulded components, non-sensitive to humidity or temperature variations
Universal Application
All makes and types of gapless surge arresters.
All weather and temperature conditions.
Design
The use of an impulse current transformer with a single-turn primary ensures that the voltage drop across the counter is negligible, even at the highest impulse currents encountered in service. This leads to added personnel safety and no increase in the protection level of the arrester. Since no gaps or series impedance are used, there is no risk of internal arcing and consequent explosive failure in the event of a short-circuit following an arrester failure.
One further common feature with the entire EXCOUNT family is that all internal components are fully encapsulated in polymer. This provides sealing to IP67, which ensures no harmful ingress of dust or moisture as well as providing personal safety through complete protection against contact with the internals.
EXCOUNT is available in different variants, depending on the user’s needs: simple, basic or extensive. Contact Thorne & Derrick for more information.
T&D are Specialist Distributors ofLV MV HV Cable Installation, Jointing, Substation & Electrical Equipment– we supply companies in the onshore and offshore wind, solar, rail, oil/gas, data centre, battery storage and utility sectors with products to enable the energisation, operation and maintenance of underground cables and overhead lines.
Protection of MV HV Medium High Voltage Cables & Power Systems
ABB introduces the next generation of monitoring equipment for surge arresters: EXCOUNT-III, utilising unique features previously unseen on the market.
Interest for online surge arrester monitoring is growing, and so the EXCOUNT-III Surge Counters have been designed to fulfil this need by providing the user with remote real-time monitoring of arresters as well as useful input to the insulation co-ordination of the station as a whole.
What are Surge Counters?
Surge Counters are used to monitor the health of Surge Arresters and protect against potentially damaging events which could lead to deterioration and ultimate overload. It is important to also schedule regular checks of surge arresters including visual inspection and diagnostics to detect and prevent a costly power outage.
The EXCOUNT surge counter range draws upon over 70 years of experience by ABB in the development of arresters and associated accessories. Safety, functionality and longevity are key elements which are given priority in selection and design of components. In stark contrast to many other competing products, the EXCOUNT surge counters has not neglected short-circuit safety which lies inherent in the design concept.
ABB Excount-III
With market pressure on utilities to obtain near 100% power availability, taking all actions to avoid even a rare unplanned outage is vital. As users push their systems harder accordingly, it can be expected to see stresses from system events leading to the arresters also being called upon to act more often than they perhaps did in the past. Monitoring how they handle those stresses – as well as what the consequences of those events are on the system itself – may be included as part of the user’s strategy for improving the overall availability. EXCOUNT-IIIhas been developed with this strategy in mind.
EXCOUNT-III is a complete remote real-time surge arrester monitoring, diagnostics and analysis system. It permits the registration of the total number of discharges, the surge amplitude and wave-steepness, the date and time of occurrence, the total leakage current as well as the resistive leakage current through the surge arrester. In addition, the equipment can be used to define the residual voltage across the arrester for the actual surge, which in turn can be used to better estimate overvoltages in the station for a more detailed insulation co-ordination evaluation.
Not only does the EXCOUNT monitor the arrester itself, it can also give an estimate of overvoltage occurring at nearby apparatus within the arrester’s protection zone – providing valuable information about whether the protection against potentially damaging surges is sufficient or not. In this way, EXCOUNT-III provides the user with remote real-time monitoring of arresters as well as useful input to the insulation co-ordination of the station as a whole.
ABB EXCOUNT-III surge counter supports the protocol IEC 61850, Ed. 2, and communicates remotely via the fibre optic cable to permit the user to add signals into an existing data collection system (SCADA). Enabling remote retrieval of data, EXCOUNT-III eliminates the need for substation visits solely to monitor surge arrester condition, while also enabling the highest possible personnel safety standard by not having to approach an energized arrester to perform online diagnostic measurements.
Excount-III Applications & Performance Data
The EXCOUNT-III system consists of individual sensors that are connected by an optical fibre connection. Each sensor can be interrogated individually and be integrated to existing SCADA system. For use with all makes and types of gapless arresters.
No voltage added to the residual voltage of the arrester
Complete monitoring of the health of the substation and the surge arresters
Remote real-time monitoring – minimizes substation visits and enables the highest possible personnel safety standard
Supports IEC 61850, Ed. 2, for integration to existing SCADA system
Enables analysis of surge current impulses
Estimation of overvoltages in the station allows for a more detailed insulation co-ordination evaluation
For each surge arrester it is fitted on, the advanced version (EXCOUNT-IIIA) registers the total number of discharges, the surge amplitude and wave-steepness, the date and time of occurrence, the total leakage current as well as the resistive leakage current through the arrester by thirdharmonic analysis (method B2 according to IEC 60099-5). Using high speed sampling and sweep time, complete surge current impulses at the arrester’s connection point are recorded and available for analysis.
The standard version (EXCOUNT-IIIM) is available for users who do not desire to analyse the overvoltages in detail. With this, discharges are only categorized by their amplitude along with a date and time stamp of occurrence. Other generic features are the same between the versions.
A web browser interface via an optical fibre connection permits online interrogation and data analysis from each unit individually and is also used for configuration setup. The introduction of smart grid and the communication protocol IEC 61850 has made users more focused on integration with existing SCADA systems. EXCOUNT-III supports this protocol and communicates remotely via the fibre optic cable to permit the user to add signals into an existing data collection system.
Excount-III ABB Surge Counters
Surge registration
In addition to surge counting, a special feature of the advanced version is the registration of the surge amplitude and wave-steepness. This can be used to define the residual voltage across the arrester for the actual surge, which in turn can be used to better estimate overvoltages in the station for a more detailed evaluation of insulation coordination than has been possible in the past.
This added-value feature will help users to verify if they have adequate protection or if they need to reconsider their choice of arrester or even increase the number of arresters in the station. Furthermore, there is particular interest to correlate front time and overvoltage levels with pre-existing transformer monitoring equipment as a means to support total system condition monitoring diagnostics.
Leakage current measurement and condition
monitoring
EXCOUNT-III gives the user the possibility to measure both the total leakage current as well as the resistive component of the current through the arrester. The measurement of the resistive current especially gives a good indication of the arrester’s condition and fitness for continued service. With the aid of the SCADA system, these measurements can readily be used to co-ordinate maintenance work and possible replacement in order to assist with minimizing unnecessary and costly unplanned outages.
Safe and secure
EXCOUNT-III remote retrieval of data via the optical fibre cable eliminates the need for substation visits solely to monitor arrester condition, while also enabling the highest possible personnel safety standard by not having to approach an energized arrester to perform online diagnostic measurements. All components are housed in a sealed, weather-proof case, suitable for outdoor use. The base unit is mounted on the support structure and interconnected similar to a traditional counter, while the separate field probe is fixed at the bottom of the arrester. An external power connection from the station auxiliary supply (100 – 250 V, AC or DC) as well as a fibre optic cable connection are additionally to be provided by the user.
T&D are Specialist Distributors ofLV MV HV Cable Installation, Jointing, Substation & Electrical Equipment – we supply companies in the onshore and offshore wind, solar, rail, oil/gas, data centre, battery storage and utility sectors with products to enable the energisation, operation and maintenance of underground cables and overhead lines.
