ELECTRICAL SAFETY EQUIPMENT AND PPE
SG / SGM / DB / OB dielectric gloves class 1–4 and dielectric boots and overshoes class 1–3 (7.5–36 kV)
Country: Spain · Model: SG / SGM / DB / OB
SG dielectric gloves of classes 1–4 are rated for a working voltage from 7 500 to 36 000 V AC, and DB boots and OB overshoes of classes 1–3 for 7.5–26.5 kV. They are used for work in electrical installations above 1 kV, in 6–35 kV switchgear and on overhead lines, during switching and testing.
- Gloves, standard
- IEC 60903 / EN 60903, natural latex, category RC
- Class 1 (SG-10)
- working 7 500 V, proof test 10 000 V, withstand 20 000 V AC; thickness < 2.1 mm
- Class 2 (SG-20)
- 17 000 / 20 000 / 30 000 V; < 2.9 mm
- Class 3 (SG-30)
- 26 500 / 30 000 / 40 000 V; < 3.5 mm
Technical specifications
| Gloves, standard | IEC 60903 / EN 60903, natural latex, category RC |
|---|---|
| Class 1 (SG-10) | working 7 500 V, proof test 10 000 V, withstand 20 000 V AC; thickness < 2.1 mm |
| Class 2 (SG-20) | 17 000 / 20 000 / 30 000 V; < 2.9 mm |
| Class 3 (SG-30) | 26 500 / 30 000 / 40 000 V; < 3.5 mm |
| Class 4 (SG-40) | 36 000 / 40 000 / 50 000 V; < 4.2 mm |
| SGM | composite (latex + polychloroprene), electrical, mechanical and arc protection without over-gloves |
| Boots DB2 / DB3 | class 2 – 17.5 kV, class 3 – 26.5 kV; ASTM F1117 (20 kV), ASTM F2413; DB3 flexible to −40 °C |
| Overshoes OB1 / OB2 / OB3 | classes 1 (7.5 kV), 2 (17.5 kV), 3 (26.5 kV), moulded one-piece, SRC sole; OB1 – HRO 300 °C / 60 s |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The latex gloves comply with IEC 60903 / EN 60903, and the class is determined by thickness, because a thicker wall has higher electrical resistance. For the whole series the following are specified: tensile strength from 16 MPa, elongation from 600 %, puncture resistance from 18 N/mm, permanent set up to 15 %, conditioning for 24 h at −40 °C and a flame test of 10 s. Leather over-gloves SG are recommended over the latex and SG-37 Nomex gloves under it, while composite SGM with an outer layer of polychloroprene give electrical, mechanical and arc protection without separate over-gloves. Every pair of DB2 boots with a blue vulcanised sole is tested at 20 kV, with a leakage current below 5 mA at 5 kV and 18 mA at 20 kV, and the boots comply with ASTM F1117 and ASTM F2413. The moulded one-piece OB2 have no metal parts, and the fluorescent green OB3 with rear entry comply with REACH.
How to choose
The class is chosen so that the maximum working voltage of the gloves is not lower than the voltage of the installation. The working, proof test and withstand voltages are 7 500 / 10 000 / 20 000 V for the SG-10, 17 000 / 20 000 / 30 000 V for the SG-20, 26 500 / 30 000 / 40 000 V for the SG-30 and 36 000 / 40 000 / 50 000 V for the SG-40, with thicknesses below 2.1, 2.9, 3.5 and 4.2 mm respectively. So class 2 is enough in a 10 kV network, while for 35 kV only class 4 remains. Boots and overshoes are made only in classes 1–3, i.e. up to 26.5 kV.
Request a price and lead time
SG / SGM / DB / OB dielectric gloves class 1–4 and dielectric boots and overshoes class 1–3 (7.5–36 kV). We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What does category RC mean on dielectric gloves?
RC denotes resistance to acids, oils, ozone and very low temperatures, and gloves of all four classes of the series have it.
How are SG gloves checked for punctures before work?
Integrity is checked with the SG-117 pneumatic tester, which finds punctures by air pressure.
How do DB3 dielectric boots differ from DB2?
The class 3 DB3 are rated for 26.5 kV (proof test 30 kV), are lightweight, flexible down to −40 °C, insulated per EN ISO 20345 and have a shock-absorbing system in the heel. The class 2 DB2 are rated for 17.5 kV.
Can dielectric overshoes be worn over work footwear?
Yes, OB overshoes are made for this. The class 1 OB1 has a vulcanised SRC sole, HRO heat resistance of 300 °C for 60 s and resistance to fuel and oil.
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