ELECTRICAL SAFETY EQUIPMENT AND PPE
Portable earths (single- and three-phase, short-circuit bars), fixed points and clamps per IEC 61230
Country: Germany · Model: IEC 61230
Copper portable earths of 25–150 mm² in single- and three-phase versions withstand from 4.9 to 29.6 kA for 1 s, and short-circuit bars with three phase clamps are rated for 45.9–55.9 kA. Together with fixed points and clamps they are used when preparing the workplace on de-energised AC medium-voltage installations, where they protect personnel from voltage and arcs in case of accidental switching on.
- Standard
- IEC 61230 (VDE 0683-100)
- Single-phase
- Cu 25–150 mm², Ir 4.9–29.6 kA / 1 s, length 0.8–5 m, lugs Ø 13 mm
- Three-phase
- 3 short-circuit cables + earth cable, transparent moulded connector with temperature sensor and QR code
- Short-circuit bars
- 40×10 and 60×8 mm, length 560–1000 mm, Ir 45.9–55.9 kA / 1 s
Technical specifications
| Standard | IEC 61230 (VDE 0683-100) |
|---|---|
| Single-phase | Cu 25–150 mm², Ir 4.9–29.6 kA / 1 s, length 0.8–5 m, lugs Ø 13 mm |
| Three-phase | 3 short-circuit cables + earth cable, transparent moulded connector with temperature sensor and QR code |
| Short-circuit bars | 40×10 and 60×8 mm, length 560–1000 mm, Ir 45.9–55.9 kA / 1 s |
| Fixed points | ball bolts Ø 20/25 mm (E-Cu/CuCr, tinned), Ir 13.8–29.6 kA / 1 s |
| Earthing clamps | for flat busbars 23/38 mm (CuNi), universal (brass), Ir 18.7–29.7 kA / 1 s |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
A single-phase unit consists of a flexible copper cable in transparent insulation 0.8–5 m long with lugs with a 13 mm hole, to which a phase clamp is fixed on one side and an earthing clamp on the other. It is used to earth individual conductors in low- and medium-voltage installations. In a three-phase unit the three short-circuit cables and the earth cable meet in a moulded transparent connector. All three phases are earthed in one operation with an even current distribution, which shortens the servicing time of transformers and switchgear. The short-circuit bars have a cross-section of 40 × 10 or 60 × 8 mm, a length of 560–1000 mm and a phase spacing of 210–450 mm. Ball bolts of Ø 20 and 25 mm made of tinned E-Cu or CuCr copper with an internal thread or a steel stud for 13.8–29.6 kA for 1 s, and T-shaped bolts, are placed in the cells as phase fixed points.
How to choose
The deciding parameters are the neutral earthing method, the rated short-circuit current and its duration, the peak factor and the required connection points. Versions with a reduced earth cable cross-section per IEC 61230 are suitable for all networks without solidly earthed neutral. On the earth side, bolts, weld-on studs or nuts are used as fixed points, as well as clamps for flat busbars with a T-handle, wing nut or bayonet, and universal clamps.
Request a price and lead time
Portable earths (single- and three-phase, short-circuit bars), fixed points and clamps per IEC 61230. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How is the connection in a three-phase earthing unit monitored?
The moulded connector is transparent, so the state of the connection is always visible. It has a built-in temperature sensor and a QR code with a link to the instructions.
In what order is a portable earth applied and removed?
First the unit is connected to the earth electrode, then to the phases with an insulating stick. It is removed in the reverse order.
What currents do the earthing clamps for flat busbars withstand?
The CuNi clamps for flat busbars of 23 and 38 mm and the universal brass clamps are rated for 18.7–29.7 kA for 1 s.
Can different clamps be connected to a single-phase earth?
Yes, the lugs for a 13 mm hole at both ends of the cable accept any clamps. Normally a phase clamp is fitted on one side and an earthing clamp on the other.
Similar products
D-TUERI / D-WATCHD-TUERI / D-WATCH personal electric field alarms 1–400 kV
VTE / VTM / POWER LIGHT / VTO / PEKE / VTCVTE / VTM / POWER LIGHT / VTO / PEKE / VTC voltage detectors 1–79 kV AC and 0.5–5 kV DC
KP-Test 5 / 5L / 5A, SPPC 5, Deltameter 5KP-Test 5 / 5L / 5A, SPPC 5, Deltameter 5 voltage detectors and phase comparators for 1–36 kV MV networks
KP-Test 5H+ / 5HL / 5HVDC / 5D dualKP-Test 5H+ / 5HL / 5HVDC / 5D dual HV and EHV voltage detectors 30–420 kV AC and ±140–320 kV DCREQUEST
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.