ELECTRICAL SAFETY EQUIPMENT AND PPE
Portable earths for LV distribution panels, cable cabinets and fuse boxes
Country: Germany · Model: LV 1 / 2 / 3
The three-pole earthing and short-circuiting device with 25 mm² cables is intended for work on low-voltage distribution panels, in cable cabinets and fuse boxes. The devices are made per IEC 61230 and supplied in sets in plastic cases with a foam insert. The earth is applied to a section that has been switched off and tested, which is a mandatory step of the five safety rules.
- Purpose
- earthing and short-circuiting of LV panels, cable cabinets, fuse boxes
- Number of poles
- 3
- Cable cross-section
- 25 mm²
- Short-circuit cable lengths
- 300 / 600 / 800 mm
Technical specifications
| Purpose | earthing and short-circuiting of LV panels, cable cabinets, fuse boxes |
|---|---|
| Number of poles | 3 |
| Cable cross-section | 25 mm² |
| Short-circuit cable lengths | 300 / 600 / 800 mm |
| Earth cable length | 1000 mm |
| Scope of supply | earthing inserts of sizes 1–3 and 00, DIAZED E33 fuse inserts, 350 mm handle |
| Versions | case sets 1, 2 and 3 (set 3 – inserts with electromagnetic locking) |
| Standard | IEC 61230 |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The portable earth is brought by hand, without forced guidance, to the connection points of the parts of the electrical installation and connected to them. If a disconnected part accidentally ends up under voltage, the short circuit through the device prevents dangerous touch voltage from arising for people and equipment. The basic set 1 contains one three-pole device with short-circuit cables of 300, 600 and 800 mm and an earth cable of 1000 mm. The device has a threaded connection for earthing inserts and an earthing clamp for flat busbars with a flexible handle and two spindle positions. The case also holds a handle 350 mm long and three DIAZED E33 fuse inserts. IT support of production shortens delivery times for special variants to customer requirements as well.
How to choose
The sets differ in the number of devices and the type of inserts. Set 2 contains two three-pole devices and twice the number of inserts, so it can earth two points at the same time. Set 3 is supplied with earthing inserts of sizes 1–3 with electromagnetic locking. Other lengths, cable types and configurations are supplied on request. For switchgear and medium- and high-voltage overhead lines separate devices with cables of 25–150 mm² for short-circuit currents up to 29.6 kA for 1 s are needed.
Request a price and lead time
Portable earths for LV distribution panels, cable cabinets and fuse boxes. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What cable lengths does the three-pole earth for LV panels have?
The short-circuit cables are 300, 600 and 800 mm long, the earth cable 1000 mm, and the cross-section of all cables is 25 mm².
Which earthing inserts are included in the set?
Three inserts each of sizes 1–3 and 00, which are connected through the threaded connection of the device. In set 2 the number of inserts is doubled.
Can the earth be used again after a short circuit?
No. A device that has carried a short-circuit current, together with its fixing points, is rated for a single load, so it is replaced.
What is checked when inspecting a portable earth before work?
The lugs for twisting and damage, the insulation, wear of the piercing clamp, contamination and stiffness of the thread, and deformation of the handle. At the slightest doubt the device is not used and is replaced entirely or in part.
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Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.