High-voltage test techniques - Part 2: Measuring systems
IEC 60060-2:2010 is applicable to complete measuring systems, and to their components, used for the measurement of high voltages during laboratory and factory tests with direct voltage, alternating voltage and lightning and switching impulse voltages as specified in IEC 60060-1. For measurements during on-site tests see IEC 60060-3. The limits on uncertainties of measurements stated in this…
STANDARD FOR THERMAL INSULATION - LIGHT DENSITY, OPEN CELL SPRAY APPLIED SEMI-RIGID POLYURETHANE
FOA...
1.1 This Standard specifies the physical property requirements and test methods to determine the
material properties for light density, open cell spray applied semi-rigid polyurethane foam, used as a
thermal insulation for building applications, whether applied on a building site or in a prefabrication
(manufacturing) facility.
1.2 The spray polyurethane foam system installer site manufactures…
Safety of transformers, reactors, power supply units and combinations thereof - Part 2-23: Particula...
IEC 61558-2-23:2010 deals with the safety of transformers for construction sites and power supply units incorporating transformers for construction sites. Transformers incorporating electronic circuits are also covered by this standard. This second edition cancels and replaces the first edition published in 2000. It constitutes a technical revision. The main changes consist of updating this Part…
Power installations exceeding 1 kV a.c. - Part 1: Common rules
IEC 61936-1:2010 provides common rules for the design and the erection of electrical power installations in systems with nominal voltages above 1 kV a.c. and nominal frequency up to and including 60 Hz, so as to provide safety and proper functioning for the use intended. For the purpose of interpreting this standard, an electrical power installation is considered to be one of the following:
a)…