IEC 61057:2017

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Specific terms and nomenclature
5 Requirements
6 Tests
7 Conformance testing of aerial devices after completion
  of the production phase
8 Modifications
Annex A (informative) - Guidelines for selecting the
        characteristics of insulating aerial devices as a
        function of the live working methods
Annex B (normative) - Suitable for live working; double
        triangle IEC-60417-5216:2002-10
Annex C (normative) - General type test procedure
Annex D (normative) - Classification of defects and tests
        to be allocated
Annex E (informative) - Care and maintenance
Annex F (informative) - Hydraulic depressurization
        (vacuum protection)
Bibliography

IEC 61057:2017 is applicable to insulating aerial devices for mounting on a chassis, to be used for live working on electrical installations at nominal voltages above 1 000V r.m.s. AC in the range 45 Hz to 65 Hz and 1 500V DC. This second edition cancels and replaces the first edition published in 1991 and IEC TS 61813:2000. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) general review of the requirements and test provisions;
b) preparation of the elements of evaluation of defects, and general application of IEC 61318:2007;
c) distinguishes between tests for hollow booms and those for foam filled booms;
d) references ISO 16368 for particular mechanical tests;
e) further information on vacuum protection and leakage current monitoring and a mandatory requirement that aerial devices for bare hand work be fitted with a permanently installed lower test electrode system;
f) controls of high electrical resistance;
g) reference to SAE for insulating hydraulic hoses;
h) inclusion of IEC TS 61813 for care, maintenance and in-service testing of aerial devices with insulating booms.