Base materials for printed circuits. Part 3: Special materials used in connection with printed circu...
Covers the bonding sheet material used in the fabrication of multilayer printed boards. The test methods for bonding sheet material are also dealt with.
1. Scope
1.1 This Standard applies to add-on heat pumps for comfort heating or heating
and cooling not exceeding 20 kW in the cooling mode and rated at 600 V or less,
single or polyphase, intended to utilize the fan assemblies and duct work of
the existing installed furnaces to form the complete functional systems where
the existing parts are not covered by this Standard.
Note: For…
Road vehicles — Air braking systems — Identification of connections on units
Specifies an identification system for pipe connections on units of air braking systems. The digits designated shall be placed close to the ports on the units. Applies to motor vehicles and their trailers and may also be used for schematic diagrams of braking systems. Shows an detailed example.
Road vehicles — Pneumatic braking connections between motor vehicles and towed vehicles — Interchang...
Specifies the requirements with concern to vehicle combinations equipped with pneumatic braking systems with two circuits: one control circuit and one pneumatic power circuit. Some figures illustrate shapes and reference quantities of concern. This second edition cancels and replaces the first edition (1975).
