Methods for the determination of the lightning breakdown voltage of insulating liquids
Describes two test methods, A and B, for assessing the electric strength of insulating liquids in a divergent field when subjected to standard lightning impulses. Method A is based on a step procedure intended to provide an estimate of impulse breakdown voltage under specific conditions. Method B is a statistical test designed to check a hypothesis about the impulse breakdown probability of an…
Radio-frequency connectors. Part 1: General requirements and measuring methods
Serves as a generic specification providing the basis for the sectional standards which apply to individual connector types. Establishes uniform concepts and procedures concerning : -terminology; -standard ratings and characteristics; -testing and measuring procedures concerning electrical electrical and mechanical properties; -classification of connectors with regard to environmental testing…
Refractory materials — Determination of thermal conductivity — Part 1: Hot-wire method (cross-array)
Belongs to a series of standard and specifies a hot-wire method for the determination of the thermal conductivety of refractory products. The method is applicable at temperatures not higher than 1250 °C and to materials whose thermal conductivity is less than 1,5 W/(m.k) and whose thermal diffusivity is less than 10-6 m2/s. Subject to the limits in 1.2, the method is applicable to powdered or…
Adhesives — Wood-to-wood adhesive bonds — Determination of shear strength by tensile loading
The method is intended for testing adhesives used in bonding wood to wood. Standard specimens are prepared from timber plies. The test specimens shall be of a two-ply or three-ply construction with notches as shown in a picture. The shear area is 20 mm x 25 mm. The adhesive shall be applied in accordance with the procedure recommended by the manufacturer of the adhesive. The mean tensile shear…
Air-conditioning and ventilation of machinery control-rooms on board ships — Design conditions and b...
Applies to seagoing merchant ships for all conditions except those encountered in extremely cold or hot climates. Applicable parts of this Standard can be used for similar spaces. The annex provides guidance and details of good practice in the design of ventilation and air-conditioning systems for machinery control rooms.
Standard for Smoke Detectors for Fire Alarm Systems
1. SCOPE
1.1 This Standard sets forth requirements for ionization-type and
photoelectric-type detectors, rated at 300 V or less, to be employed in
ordinary indoor locations in accordance with the following:
A Standard for the Installation of Fire Alarm Systems, CAN/ULC-S524M;
B Standards of the National Fire Protection Association:
No. 71,…
Covers requirements for speakers for voice and tone reproduction
for use in accordance with the Standard for the Installation of
Fire Alarm Systems, CAN/ULC-S524-M86, and in accordance with the
Canadian Electrical Code, Part I.
1. SCOPE
1.1 This Standard sets forth requirements for smoke-alarms, single- and
multiple-station type, rated 120 V or less, intended for open area protection
in ordinary indoor locations.
1.2 A smoke-alarm, as defined by these requirements, is a self-contained unit
which consists of an assembly of electrical components including a smoke
chamber, alarm-sounding appliance, and…
This Standard covers graphical symbols which are to be used in
microfilming to convey information concerning the condition of the original
document, arrangement and production criteria.
