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Fixed Phase and Earthing Points EaS Cables Phase Connecting Elements Earth Connecting Elements Earthing Sticks EaS Devices, Short-Circuiting Bars
4. Carry out Earthing and Short-Circuiting – EaS Devices

Earthing and Short-Circuiting Devices
Earthing and short-circuiting at the work location is a key element of the
five safety rules. This measure ensures that the installation is de-energised 2
when working on electrical equipment even in case of interference volt-
ages, atmospheric surges or accidental reconnection. 7
Isolation from supply voltage must be verified at the point of installation
immediately before portable earthing and short-circuiting equipment is
installed. 12
When installing earthing and short-circuiting devices, the earthing cable
always has to be connected to the earthing system first to ensure that
residual or interference voltages are discharged. 3
Portable earthing and short-circuiting equipment according to IEC/
EN 61230 (DIN VDE 0683-100) is a hand-held device used to approach
fixed connection points of parts of an electrical installation for earthing lI 8
and short-circuiting purposes (according to EN 50110-1 (DIN VDE 0105-
100), section 6.2.4) and for connection with the fixed connection points
without guide slots, bushings or guide rails. It consist of an earthing and
short-circuiting device (EaS device) and an earthing stick.
lG
The purpose of earthing and short-circuiting devices is to earth and 5
short-circuit electrical conductors. They consists of an earthing and short-
circuiting device. The earthing device connects the earthing system with 9
a short-circuiting device or with the equipment to be earthed. It consists
of an earth clamp (1) and an earthing cable (4). 4
The short-circuiting device connects the phase conductors that have to
be short-circuited. It consists of clamps (1+2), short-circuiting cables or
bars (3) and connecting clusters (5), if required. 10
The short-circuiting bar is a rigid short-circuiting device.
lH
Connecting clusters connect the short-circuiting cables with each other
and with the earthing cable or the short-circuiting bar with the earthing 1
cable.
Connecting clamps connect the earthing and short-circuiting cables or 6
bars to the earthing system either directly or via connecting links such as 11
cable lugs and to parts of the installation via fixed connection points, if
required.
Fixed connection points are parts of the installation to which earthing 1 Earth clamp 7 Line connection point
and short-circuiting devices are connected (e.g. conductors, bars, fixed ball 2 Line clamp 8 Insulating element with length Il
points, cylinder bolts, clamps etc.). Maximum short-circuit strength can be 3 Short-circuiting cable 9 Hand guard
achieved by connecting the fixed ball point with the ball head cap of the 4 Earthing cable 10 Handle with length lH
earthing and short-circuiting device. 5 Connecting cluster 11 End fitting with plug-in coupling
6 Earth connection point
12 Coupling
An earthing stick is a hand-held insulating stick for approaching clamps
of earthing and short-circuiting devices to parts of electrical installations Portable earthing and short-circuiting equipment
for earthing and short-circuiting purposes. It consists of an insulating el-
ement, black ring, handle and coupling for attaching clamps. Earthing
sticks are selected according to the weight of the earthing and short-cir-
cuiting devices to be connected (see “max. load on operating head in kg”). Earthing and short-circuiting devices as well as the fixed ball and
The insulating element is the part of the earthing stick between the earthing points must be rated to withstand the short-circuit current
black ring and the end of the earthing stick in the direction of the clamp. conditions expected on site. The required cable cross-section depends on
It ensures that the user maintains the required safe distance and provides the maximum short-circuit current (Ik in A) and the maximum short-circuit
sufficient insulation. The insulating element lI must have a minimum time (Tk in s).
length of 500 mm in installations exceeding 1 kV.
Note:
A complete earthing and short-circuiting device according to IEC/EN In the event of a short-circuit, the short-circuit current will flow through
61230 (DIN VDE 0683-100) includes, for example: the short-circuiting device. However, this is different for earthing devices
– Fixed point / Fixed ball point as they do not conduct short-circuit currents and can therefore be rated
– Single-pole or three-pole earthing and short-circuiting device or for lower values.
short-circuiting bar
– Fixed earthing point
– Earthing stick
4. EaS Devices

54 You will find detailed product information on our website Valid as of January 1, 2019

EaS Devices 4.