Electrical Safety

High Voltage Gloves | HV Insulating Gloves

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Electrical Insulation Tests For LV HV Gloves

The following table enables the selection of insulating gloves dependent on the level of electrical protection required:

➡ See below our complete range of Insulating Gloves including High Voltage Gloves for working on MV-HV electrical equipment, substations, cables and overhead lines.

Thorne & Derrick stock the complete range of CATU Electrical Safety Equipment including voltage detectors, phase comparators, insulating sticks, arc flash clothing and substation life saving kits.

Complete range of rubber insulating gloves for safe electrical working on medium/high voltage power systems including 11kV/33kV.

Taking Care Of Insulating Gloves

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As Main UK Stockists for the CATU Electrical range of insulating gloves Thorne & Derrick regularly are requested to provide care and maintenance advice to ensure gloves provide adequate and ongoing electrical safety and protection to the wearer.

For insulating gloves to function effectively and in accordance with their specification they must be carefully and regularly cleaned, checked and tested – if damaged always replace. If uncertain always replace.

The insulating gloves will fail to provide hand protection against electrical shock if the surface integrity has been comprised by “wear and tear”.

Clean

Keep gloves clean. Similar to arc flash clothing, the cleaner the owner keeps their pairs of rubber insulating gloves the less risk of electric shock. Chemicals, oils, and other petroleum-based products can cause rubber to weaken and break down, so if the gloves become contaminated on the job, wash them off with tap water and a mild, bleach-free detergent to cleanse and remove debris and contaminants. Gently dry gloves with a clean cloth.

Check

Check for embedded materials. Due to the thickness of the insulating glove material the glove surface can be damaged by small, sharp particles of foreign material, such as copper cable particles, to work their way into the gloves and go undetected. Even though the embedded debris may not be obvious or penetrate entirely through the wall of the glove it still creates small holes and weak points that can compromise the wearers electrical safety. Before each wearing roll the gloves between your hands to feel for embedded particles. If any are found ensure the insulating gloves are electrically tested to verify their status for safe use or disposal.

Test

Air test them before every wear. Even minuscule pinholes in electrical gloves can be dangerous, so it’s extremely important to air test gloves before wearing them – each and every time. To air test the gloves simply hold the gauntlet (sleeve) end of it closed trapping air inside. Then tightly roll the closed end of the glove downward toward the fingers. If no air leaks out, the glove is free from holes. Have gloves electrically tested twice a year. Insulating gloves need to be electrically tested at least every six months to ensure that they’re still able to protect against low, medium or high voltages. Follow the stamped dates on the gloves closely. If you end up not using a pair of gloves within a year following their electrical test have the gloves retested before putting them back into use.

Store

Store gloves properly. Heat, UV rays and pressure from other objects can all cause damage to gloves – so store them carefully when they’re not in use. Before putting them away, ensure that the gloves are clean and dry. Rubber insulating gloves are best stored in cool, dark places, away from chemicals and heat sources. If you store gloves in a bag or container with other items you must ensure that nothing is piled on top of the gloves, or otherwise pushing them out of shape.

Insulating Gloves – Class & Category

Should you require any further advice about the care, maintenance or selection of insulating gloves please do not hesitate to contact us.

Insulating Matting | Voltage Detectors | Substation Safety MV HV

Specialist Distributors Of LV MV HV Electrical Equipment

We supply Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV 

Ellis Patents | Nexans Euromold | Pfisterer CONNEX | Prysmian – Distributors

Earthing Spiders

Portable Earthing & Short Circuiting Kits

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➡ Thorne & Derrick stock a complete range of Earthing Spiders to provide portable earthing and short circuiting solutions for LV MV HV substation and overhead line applications – contact us for UK and Exports Sales of substation and transmission line portable earth leads. Largest European stocks of CATU Electrical.

ASTM D120 Insulating Gloves

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ASTM D120 specification covers manufacturing and testing of rubber insulating gloves for protection of workers from electrical shock.

Two types of insulating gloves are provided and are designated as Type I, non-resistant to ozone, and Type II, resistant to ozone.

Six classes of ASTM D120 compliant insulating gloves differing in electrical characteristics are provided and are designated as Class 00, Class 0, Class 1, Class 2, Class 3 and Class 4.

The following tests shall be performed as part of the ASTM D120 Standard Specification for Rubber Insulating Gloves:

• ac proof test
• ac breakdown test
• ac moisture absorption/proof test
• dc proof test
• dc breakdown test
• ozone resistance test
• chemical tests
• tensile strength
• tear resistance test
• puncture resistance test

This following abstract is a brief summary of the referenced ASTM D120 standard – this is provided for informational purposes only and not an official part of the ASTM D120 standard; the full text of the standard itself must be referred to for its use and application.

ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Scope Of ASTM D120

Distributors & Stockists For CATU Electrical

Insulating Matting | Voltage Detectors | Insulating Gloves | Substation Safety | Arc Flash Clothing Protection

Substation Safety Equipment From CATU Electrical

Electrical Safety Equipment | MV HV Medium & High Voltages

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CATU Electrical is the world leading manufacturer of Electrical Safety Equipment for working on opower systems including cables, switchgear, substations and electrical equipment operating at LV (Low Voltage), MV (Medium Voltage) and HV (High Voltage).

Thorne & Derrick International, based in the UK, are the largest stockist and supplier of CATU Electrical products in Europe.

Together, we make the world a safer place. Here’s how.

Once Upon A Time…..

CATU Electrical was created in 1919 and since the beginning it has dedicated its activity to the manufacture of safety material, PPE and equipment for LV MV HV electricity networks and installations – whether underground or overhead, onshore or offshore, CATU Electrical protects utility workers from the workplace hazards of the amp and volt.

Since 1936, CATU’s activity has been concentrated on equipment for personal protection against electrical hazards such as arc flash clothing and accordingly has now more than 60 years experience in this field.

After the end of World War II, many French companies involved in Production, Transmission and Distribution of electrical energy were amalgamated into one national company, called “Electricité de France” (EDF).

Poster : Le Bon D’Electricite by Mario, an original vintage poster from 1926 France. This original antique poster features a plug and contact nest in the shape of the map of France.

A short time later, a central department for Safety and Prevention of Accidents was created within EDF.

Because of experience that CATU already had in this field, a close cooperation was forged between EDF and CATU which resulted in joint development of all the important Safety Material and Equipment now used in France.

The international recognition gained by EDF in this field has contributed to giving CATU Electrical a foremost position as international suppliers of LV MV HV Electrical Safety Equipment from Argentina to Zambia.

Today, CATU Safety Equipment including all the ranges of short-circuiting and portable earthing systems, voltage detectors and testers, the live working tools and the electrical safety equipment for Cable Jointers and Linesmen is used by the main power utilities and electrical contractors in over 100 countries spread across 5 continents.

CATU’s experience and level of investment and research is unmatched and unrivalled – they are members of the main national and international technical committees (such as UTE, CENELEC, IEC and ASTM).

CATU Electrical is contributing to the development and application of the latest technologies – this quest for continuous improvement and innovation is now reinforced with their ISO 9001:2000 Quality Insurance Certification.

No surprises then that CATU Electrical is the preferred brand of choice and most specified manufacturer by the world’s leading oil and gas EPC companies.

Read Blog | Connecting High Voltages & Energising Data Centres

Insulating Gloves

Insulating gloves conform to international IEC-60903 standard – to satisfy the requirements of this standard CATU Electrical gloves are subjected to dielectrical, mechanical resistance and ageing tests.

* CATU part references to be completed by size A, B, C, D. **References to be completed by size C, D. Correspondence with standard sizes: A = 8, B = 9, C = 10, D = 11

Insulating Boots

CATU MV-135*

CATU Electrical manufacture insulating boots made from elastomer canvas support, very flexible and slip resistant for offshore electrical engineers and substation workers. Anti-perforation stainless steel sole and shell the electrical insulating footwear is in accordance with EN 345.

Insulating Matting

The insulating matting is manufactured of elastomer compounds with slip-resistant surface. High quality dielectrical rubber matting conforming to international IEC 61111 standard for LV MV HV offshore electrical switchgear and switchboard applications including 11kV and 33kV operating voltages.

IEC6111 Insulating Matting

Insulated Tools

➡ Further information about insulated tools manufactured by CATU Electrical.

Arc Flash Clothing & Protection

➡ Further information about arc flash clothing and protection manufactured by CATU Electrical.

Arc Flash Face Shield Kit – 10cal/sqcm

CATU KIT-ARC-01 arc flash face shield kit comprises of:

• 1 Face shield with chin cup 10cal/sqcm, absorbs> 99.9% of harmful UV radiation, 70% light transmission, tested to ASTM F2178 specifications
• 1 ABS helmet electrically insulated EN397, EN 50365, ANSI Z89.1, 20kV.
• 1 carrying bag for face shield and helmet

KIT-ARC-01 – Arc Flash Face Shield Kit

Arc Flash Jacket Kit – 11cal/sqcm

CATU KIT-ARC-02 arc flash jacket kit comprises of:

• 1 Face shield with chin cup 10cal/sqcm, absorbs> 99.9% of harmful UV radiation, tested to ASTM F2178 specifications
• 1 ABS helmet electrically insulated EN397, EN 50365, ANSI Z89.1, 20kV.
• 1 safety glasses EN 166/EN 170
• 1 arc flash protective jacket 11cal/sqcm (size XL – other sizes on request),ASTM F1506 and NFPA 70E Standards
• 1 carrying bag for face shield and helmet
• 1 all kit carrying bag

KIT-ARC-02 Arc Flash Jacket Kit

Arc Flash Protective Coverall Kit – 11cal/sqcm

CATU KIT-ARC-03 arc flash protective coverall kit comprises of:

• 1 Face shield with chin cup 10cal/sqcm, absorbs> 99.9% of harmful UV radiation, tested to ASTM F2178 specifications
• 1 ABS helmet electrically insulated EN397, EN 50365, 20kV.
• 1 safety glasses EN 166/EN 170
• 1 arc flash protective hood
• 1 protective coverall 11cal/sqcm (size L- other sizes on request),ASTM F1506 and NFPA 70E Standards
• 1 carrying bag for face shield and helmet
• 1 all kit carrying bag

Arc Flash Protective Hood Kit – 40cal/sqcm

CATU KIT-ARC-04 arc flash protective hood kit comprises of:

• 1 arc flash protective hood 40cal/sqcm, ASTM F2178 and NFPA 70E Standards
• 1 arc flash protective coat 40cal/sqcm, (size L), ASTM F1506 and NFPA 70E Standards
• 1 arc flash protective bib overall 40cal/sqcm,(size XL*), ASTM F1506 and NFPA 70E Standards
• 1ABS helmet electrically insulated EN397, EN 50365, ANSI Z89.1, 20kV.
• 1 safety glasses EN 166/EN 170
• 1 carrying bag for face shield and helmet
• 1 all kit carrying bag

Substation Life Saving Kits

➡ Further information about substation and life saving kits manufactured by CATU Electrical.

Wall Mounted Life Saving Kit

In case of an electrical accident, quick response is essential: seconds gained or lost can decide the life or death of a victim.

Our life saving equipment is designed to make all necessary materials immediately available to rescue personnel.

CATU Wall Mounted Life Saving Kit

Composition of the kit:

• 1 moulded plastic support with translucid high resistance plastic door.
• 1 rescue telescopic stick
• 1 voltage detector with flexible antenna contact (with autotest)
• 1 cable cutter with insulated handles Forged steel blades maximum opening: 30 mm
• 1 insulating platform 24 or 36 kV high voltage
• 1 insulating gloves
• 1 insulating boots
• 1 Safety instructions on the plastic door
• 1 talcum powder can.

Compact Carrying Life Saving Kit

This compact kit is designed especially to be carried in a vehicle for safety electrical intervention (up to 24 kV). Made in two part (of moulded material: PEHD), the case is also on its red part, an insulating platform.

CATU Substation Life Saving Kits

Composition of the kit:

• 1 insulating platform 24 or 36 kV
• 1 telescopic insulating stick
• 1 voltage detector with autotest
• 1 rescue hook
• 1 insulated cable cutter
• 1 pair of insulating gloves
• 1 pair of insulating boots
• 1 talcum powder can
• 1 safety instructions and safety first aid posters
• 1 adhesive tape (black and yellow).

Voltage Detectors

➡ Further information about voltage detectors manufactured by CATU Electrical.

The DETEX voltage detector HBL is designed to offer users maximum safety on MV installations with explosive atmosphere.

• Voltage presence is indicated by both extremely bright red flashing LED’s and powerful rated audible signal > 60 dB/2 m.
• High reliability
• Tropicalized: -25 / +55 °C.
• housing made from polycarbonate with high mechanical properties and dielectric strength.

CATU CC-365-(*)-HBL-(**)

**End fitting C or K, recommend stick: CE-4-21

*Range of voltage 3/10 kV, 10/30 kV, 30/45 kV

Phase Comparators

➡ Further information about phase comparators manufactured by CATU Electrical.

Detect differences in voltage between any two points of an installation indicated by LED’s. It also enables assessment of the order of magnitude of the residual voltage induced by nearby live lines or circuits, and thus differentiates it from the one provided directly from a high voltage source.

Range of voltage: 2/36 kV

CATU CL-8-36

Short Circuiting & Portable Earthing Systems

Recommended stick to be ordered separately: CF-5-40-E

Recommended stick to be ordered separately: CF-4-21-C

♦ Further Reading

For more reading about Electrical Safety, read the T&D blog:

• Electrical Safety – Arc Flash Accidents & Electrocution In LV-HV Installations
• Can Arc Flash Clothing Save Cable Jointers Lives?
• Arc Flash Calculation – Selecting Clothing & PPE To Protect Lives Against Arc Hazard
• Insulating Matting – IEC 61111 Specifications & Selection For Switchboard Matting

Thorne & Derrick distribute the most extensive range of Low & High Voltage Cable Installation & Electrical Distribution Equipment to the Power Transmission & Distribution industry in the onshore and offshore wind, solar, rail, oil/gas, data centre, battery storage and utility sectors – this includes Joints, Terminations & Connectors to enable the installation of low, medium and high voltage power cables into underground trench or duct.

Key Product Categories: Connectors, Joints & Terminations MV HV | Cable Preparation & Jointing Tools | Duct Seals | Cable Transits | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Clothing & Protection | Cable Pulling | Earthing & Lightning Protection | Feeder Pillars

Main UK Stockists for:  3M Electrical, PFISTERER Connex, Nexans Power Cable Accessories (Euromold), Alroc, Ellis Patents, ABB, Roxtec, Cembre & CATU Electrical.