IEC 62237 pdf download Live working – Insulating hoses with fittings for use with hydraulic tools and equipment
This International Standard is applicable to mobile insulating hoses with fittings used withhydraulic tools and equipment for live working at nominal voltages exceeding 1 kV r.m.s. atpower frequency.
The use under D.C. conditions is not covered by this standard.
Insulating hoses with fittings are used to provide a connection between the hydraulic tool andthe pump which are at different potentials.They are not considered as a fixed component of alive working device (e.g. aerial device). They can be connected and disconnected undernegligible pressure.They can be directly handled by the user.
The following referenced documents are indispensable for the application of this document.For dated references,only the edition cited applies. For undated references, the latest editionof the referenced document (including any amendments) applies.
IEC 60060-1:1989，High-voltage test techniques – Part 1: General definitions and testrequirements
IEC 60060-2，High-voltage test techniques – Part 2: Measuring systems
IEC 60212:1971,Standard conditions for use prior to and during the testing of solid electricalinsulating materials
IEC60417-DB:20021)，Graphical symbols for use on equipment
IEC 61318:2003,Live working – Quality assurance plans applicable to tools,devices andequipment
IEC 61477:2001,Live working – Minimum requirements for the utilization of tools, devices andequipment
3 Terms and definitions
For the purpose of this document, the following terms and definitions and the ones included inlEC61318 apply.
insulating hose with fittings
insulating and pressure resistant hose and fittings which are used to provide a connectionbetween parts of hydraulic equipment at different electric potentials
[Definition 12.1.4 of IEC 60743]
insulating and pressure resistant hose without fittings
maximum operating pressure
pressure specified by the manufacturer which shall not be exceeded during the use of theinsulating hose
insulating liquid (for hydraulic equipment)
insulating liquid which is used for the transmission of hydraulic energy between parts atdifferent electric potentials
4.1 Protection against corrosion
Metal parts shall be resistant to corrosion either by their own composition or by being suitablytreated.
NOTE When two metallic materials are used, they should be selected in such a way as to avoid electrolytic action.
4.2Finishing and mechanical protection
The various components shall be designed so that they do not create the potential for injury.
Insulation is achieved by using a proper length of insulating hose.End fittings shall not impairthe dielectric properties of the tool.
NOTE Orange is a preferred colour to indicate insulating parts.
4.4 Conductive parts
All conductive parts fixed to insulating parts shall be easily identifiable.