Liquid pumps and pumps units. Noise test code. Grades 2 and 3 of accuracy PAS 15 Figure 1 — Basic form

Figure 1 — Basic form of Unified insert assembly

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A metallic screening layer of copper wire or copper tape and/or a metallic armour of aluminium or galvanized steel wire

BS EN IEC 60077 is a series of international standards on railway vehicles that specifies the rules for DC circuit-breakers

Liquid pumps and pumps units. Noise test code. Grades 2 and 3 of accuracy PAS 15 Figure 1 — Basic form1 Scope This document specifies all the information necessary to carry out efficiently and under standardized conditions the determination, declaration, and verification of the airborne noise emission of liquid pumps or pump units (see 4. 1). It specifies the noise measurement methods and the operating and mounting conditions that shall be used for the test. Noise emission characteristics include emission sound pressure levels at specified positions