SN EN 61057 : 1993

Cooperating organizations
National foreword
Foreword
Section 1 - General
1 Scope
2 Definitions
   2.1 Definitions according to IEV
   2.2 Specific definitions
   2.3 Nomenclature
Section 2 - Technical characteristics
3 Special technical characteristics
   3.1 Dimensions
   3.2 Special devices to ensure safety
        3.2.1 Stabilization of buckets
        3.2.2 Void
        3.2.3 Controls
        3.2.4 Auxiliary power system
        3.2.5 Rotation of the turntable
        3.2.6 Communication
   3.3 Other characteristics
4 Particular electrical characteristics
   4.1 Earthing
   4.2 Electrostatic discharge protection of metal
        components
   4.3 Corona effect
        4.3.1 Equipotential connection between conducting parts
               which are not insulated from each other
        4.3.2 Guard electrode
        4.3.3 Non-visible conductive parts
   4.4 Bonding equipment
        4.4.1 Bonding cable
        4.4.2 Equipotential bonding
   4.5 Monitoring of leakage current
Section 3 - Type tests
5 General
6 Visual inspection and dimensional check
   6.1 Visual inspection
   6.2 Dimensional check
7 Dye penetration of insulating foam-filled
   structures
8 Electrical tests
   8.1 Electrical tests before and after exposure to
        humidity for the boom, rods, hoses, optical fibre
        cables and hollow tubes
        8.1.1 Boom
        8.1.2 Tubes and rods
        8.1.3 Hoses
        8.1.4 Optical fibre cable
        8.1.5 Hollow tubes
   8.2 Dielectric wet test for the boom, rods, hoses,
        optical fibre cables and hollow tubes
        8.2.1 General test conditions
        8.2.2 Wet conditions
        8.2.3 Test results
   8.3 Electrical test for oil and devices employing oil
   8.4 Special requirements for hollow booms
        8.4.1 Sealed hollow boom
        8.4.2 Open hollow boom
   8.5 Dielectric tests of the aerial devices
        8.5.1 Dielectric tests of the complete boom
        8.5.2 Dielectric test of a lower boom with an
               insulating insert
   8.6 Dielectric test on insulating buckets and liners
        8.6.1 Puncture test
        8.6.2 Surface withstand test
   8.7 Jibs
9 Mechanical tests
   9.1 Fatigue test
        9.1.1 Fatigue type test on upper boom and lower boom
               with insulating insert
        9.1.2 Fatigue type test on insulating hoses
   9.2 Overload test
        9.2.1 Overload test on boom and jib
        9.2.2 Torsion test on boom with bucket(s)
   9.3 Hydrostatic tests
        9.3.1 Bursting safety factors
        9.3.2 Hydrostatic tests on insulating hoses
        9.3.3 Impulse test on insulating hoses
        9.3.4 Leakage test on insulating hoses
        9.3.5 Change in length test on insulating hoses
        9.3.6 Burst test on insulating hoses
        9.3.7 Cold bend test on insulating hoses
   9.4 Oil depressurization
10 Mechanical factors that affect the use of a
   mobile unit during live working
   10.1 Boom deflection
   10.2 Horizontal bucket loading
   10.3 Bucket creep
   10.4 Bucket tilt angle
   10.5 Precision of upper controls at the bucket
11 Determination of the flammability for insulating
   buckets and liners
Section 4 - Sampling and routine tests
12 Sampling tests
13 Routine tests
   13.1 Visual inspection
   13.2 Operation
   13.3 Dielectric tests
   13.4 Mechanical tests
   13.5 Acoustic emission test method
   13.6 Determination of device stability
Section 5 - Special clauses
14 Marking
15 Modifications
16 Acceptance tests
Appendices
A Electrical tests before and after exposure to
  humidity
B Dielectric wet test
C Electrical tests for aerial devices
D Fatigue test of insulating hoses
E Overload test
F Marking
G Acceptance tests
H Specific terms and nomenclature
J Details of typical boom current monitoring system
K User's guide
L Acoustic emission on aerial devices with
  insulating booms - Test method
Annexes
ZA (normative) Other international publications
   quoted in this standard with the references of
   the relevant European publications
ZB (informative) prEN 280. Mobile elevating work
   platforms - Design calculations - Stability
   criteria - Construction - Safety - Examinations
   and tests. Subclauses quoted in EN 61057
National annex NA (informative) Original IEC text
                  amended by CENELEC common modifications
National annex NB (informative) Committees responsible
National annex NC (informative) Cross-references

Applies to aerial devices (mobile elevating work platforms [MEWP]), with or without the possibility of an additional jib, as a minimum with an insulating upper boom (extending structure), used for live working on the nominal voltage, which is between 1 kV r.m.s. and 800 kV r.m.s., at power frequency.