Live working. Phase comparators - Resistive type to be used for voltages from 1 kV to 36 kV a.c.1 Scope This part of IEC 61481 is applicable to portable phase comparators of resistive type to be used on electrical systems for voltages from 1 kV a. c. to 36 kV a. c. and frequencies of 50 Hz and or 60 Hz. This standard is applicable to phase comparators of resistive type used in contact with the bare conductive parts to be compared: as a complete device including its insulating element or as a separate device, adaptable to an insulating stick

commercial and security specifiers

Blow moulding machines associated with an injection process (EN 422)

“proof production”

Knowledge of the effects of alternating current is primarily based on the findings related to the effects of current at frequencies of 50 Hz or 60 Hz which are the most common in electrical installations

business continuity and the resilience of utilities over time

— specialized lighting systems

BS IEC 62679‑2 specifies the essential ratings and characteristics of EPD modules for the evaluation of optical and electro-optical performances

Cast unwrought copper products

• Event reporting and logging

— It also describes a reduced dataset recommended for equipment generating low acoustic output levels

Manufacturers of bitumens and binders

the control functions are defined by their effects on a character-imaging input/output device