Quartz crystal units for oscillators - Part 3: Standard outlines
Loose-leaf booklet containing standard outlines and pin connections. Thirty-four standard sheets are included and supplements will be issued as new outlines are developed.
Rotary wafer switches (low current rating). Part 1: General requirements and measuring methods
Deals with terminology, classification into groups, electrical ratings, marking, IEC type designation, type tests, standard conditions for testing, visual inspection, dimensions, clearances and creepage distances, electrical tests, mechanical tests, climatic tests and endurance tests.
Toggler switches - Part 1: General requirements and measuring methods
Applies to lever switches for use in electronic and electromechanical equipment, including switches necessary to connect the supply mains. Switches covered by this standard have a maximum rated voltage not exceeding 500 V and a maximum rated current not exceeding 25 A (d.c. or a.c. r.m.s. values).
Establishes uniform specifications and type test requirements for lever switches also establish…
Alternating current (isolators) and earthing switches
Applies to alternating current disconnectors and earthing switches, designed for indoor and outdoor installation, for voltages above 1000 V and for service frequencies up to and including 60 Hz.
This standard also applies to the operating devices and the auxiliary equipment.
1. SCOPE
1.1 This Specification covers the dimensions and requirements of standard
tubular and semi-tubular rivets, having oval, truss, and flat countersunk
heads, in a range of sizes from 1/16 to 5/16 inches diameter. While standard
materials, finishes, lengths, head forms and other such requirements are given,
it is understood that many rivets differing in one or more of these respects…
Recommendations for voltage measurement by means of sphere-gaps (one sphere earthed)
Applies to the construction and use of sphere-gaps for measuring the peak value of alternating, direct and both full standard and longer tail impulse voltages. Peak values of the disruptive voltages in air are given in tabular form. Note: - For high-voltage test techniques, see IEC 60.
