Supply voltages for transistorized nuclear instruments
Specifies the standard values and tolerances of a.c. mains supply voltages and frequencies, from which the instruments shall be designated to operate, and the standard values of nominal stabilized d.c. power supply voltages for d.c. supply of instruments by mains-operated stabilized d.c. sources that are not an integral part of the instrument to which they supply power.
Dimensions of indoor and outdoor post insulators and post insulator unit for systems with nominal vo...
This edition supersedes the second edition of IEC 273 (1979).
Applies to post insulators and post insulator units of ceramic material or glass intended for indoor or outdoor service, and to post insulators of organic material intended for indoor service in electrical installations or equipment operating on alternating current systems with a nominal voltage greater than 1 000 V and a frequency not…
Methods of measurement for radio transmitters - Part 1: General conditions of measurement, frequency...
Deals with methods of measurement of a number of characteristics applicable to transmitter for all classes of emission. Standard conditions of measurement are specified which apply to these measurements, as well as to those described in the other specialized parts.
Recommended Practice for the Installation of PVC Drain, Waste and Vent Pipe
and Pipe Fittings
1. SCOPE
1.1 Data Included
1.1.1 This Recommended Practice covers the installation of drain,
waste and vent systems for domestic, industrial and commercial plumbing.
1.1.2 This Recommended Practice includes handling instructions, system
repair, installation instructions, chemical resistance charts (Appendix A),
special environmental conditions, workmanship and…
Oil Fired Steam and Hot Water Boilers for Commercial and Industrial Use
1. Scope
1.1 This Standard applies to complete flue-connected, oil-fired steam and/or hot-water boilers, provided with automatic control devices.
1.2 This Standard applies to low pressure boilers intended for commercial and industrial use having an input of, or in excess of, 3 gph (US) (approximately 400,000 Btuh) and to high pressure boilers regardless of intended use or input. Note…
1. Scope
1.1 This Standard applies to portable industrial oil-fired heaters irrespective of the heating capacity, the type of burner or the motive power.
1.2 The requirements given herein apply to units which may be indirect-fired or direct-fired, vented or unvented, and which may be used with or without duct work.
1.3 The requirements given herein apply to direct-fired or indirect-fired…
1. Scope
1.1 This Standard applies to complete commercial-industrial steam cleaning
machines which are either gas*-fired or oil+-fired.
*Natural, manufactured or liquefied petroleum gas, etc.
+Grades as listed in CSA Standard B140.0, Definitions and General Requirements
for Oil Burning Equipment.
1.2 The requirements of Clauses 1 to 8, apply to both oil-fired steam cleaning
machines…
