Cable connections for gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and abov...
This report covers the connection assembly of cables to gas-insulated metal-enclosed switchgear in single or three-phase arrangements where the cable terminations are fluid filled and there is a separating insulating barrier between the cable insulation fluid and the gas insulation of the switchgear. Applies to connections with extruded cables provided that these are fitted with cable…
Power convertors for electric traction - Part 4: Direct d.c. convertors (d.c. chopper convertors) fo...
Applicable to direct d.c. semiconductor power convertors intended for service on rolling stock supplied with d.c. current. This standard has been drawn up for convertors supplying vehicle traction circuits, but it can be applied, in principle, to convertors for the supply to auxiliary services on these vehicles.
Standardization of interconnections between broadcasting transmitters or transmitter systems and sup...
Applies to all classes of transmitters for sound and television broadcasting. Deals with the interface between a transmitter (or system of transmitters) and the supervisory equipment which is intended to remotely monitor and/or control the transmitter(s). Details the interconnections and facilities to be provided with a view to achieving compatibility between different types and makes of…
Gives standards on the following sub-categories of analogue integrated circuits: -operational amplifiers (having two inputs and one output); -audio-amplifiers, video-amplifiers and multichannel amplifiers for telecommunications; -R.F. and I.F. amplifiers; -voltage and current regulators; -analogue signal switching circuits. Should be used with IEC 60747-1 and 60748-1.
Cranes — Overhead travelling cranes and portal bridge cranes — Tolerances for cranes and tracks
Specifies the manufacturing tolerances at standard temperature of 20 °C. These tolerances apply to a lifting appliance loaded solely by ist own mass. Tolerances take no account of elastic deformation during operation.
Oils of sassafras and nutmeg — Determination of safrole and cis- and trans-isosafrole content — Gas ...
A small quantity of the oils is analyzed by gas chromatography under specified conditions on a packed column. The safrole and cis- and trans-isosafrole contents are determined by using the internal standard method. As stationary phase are used polydimethylsiloxane, or polyethylene glycol 20000. Operating temperatures: Oven: isotherm about 100 °C when using polydimethylsiloxane; isotherm about 125…
Oils of thujone-containing Artemisia and oil of sage (Salvia officinalis Linnaeus) — Determination o...
A small quantity of the oils is analyzed under specified conditions. The alpha- and beta-thujone contents are determined by using the internal standard or addition method. As stationary phase are used cyanopropyl methylphenyl methyl silicone, or trifluoropropylmethyl silicone, or polyethylene glycol 1500. Operating temperatures: Oven: isotherm about 100 °C when using cyanopropyl methylphenyl…
Oil of calamus — Determination of cis-beta-asarone content — Gas chromatographic method on packed co...
A small quantity of the oil is analyzed under specified conditions. The cis-beta-asarone contents is determined by using the internal standard or addition method. As stationary phase polyethylene glycol 20000 is used. Operating temperatures: Oven: isotherm about 190 °C. Injection system and detector: about 170 °C.
Specifies a method of test and criteria for vertical and horizontal ducts under standardized fire conditions. The general purpose is to measure the ability to resist the spread of fire from one fire compartment to another without the aid of fire dampers. Is applicable to vertical and horizontal ducts with or without branches, taking into account joints, air supply and exhaust openings and…
Cereals and cereal products — Determination of moisture content (Basic reference method)
The method is not applicable to maize, for which an identical method is specified in the annex to ISO 6540. The method is idended to serve as a standard for checking and perfecting routine methods. It consists in , if necessary, grinding of a sample, after conditioning, if required, drying of a test portion under reduced pressure, at a temperatur between 45 and 50 C and in the presence of a…