BS EN ISO 8849:2021 pdf download.Small craft — Electrically operated bilge pumps
1 Scope
This document specifies requirements for electrically operated bilge pumps intended for use in removing bilge water. It applies to:
— direct current (DC) bilge pumps which operate at a nominal voltage not exceeding 50 V; and
— single phase alternating current (AC) bilge pumps which operate at a nominal voltage not exceeding 250 V.
It does not cover pumps intended for damage control.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 8846:1990, Small craft — Electrical devices — Protection against ignition of surrounding flammable gases
ISO 13297:2020, Small craft — Electrical systems — Alternating and direct current installations
IEC 60529:2013, Degrees of protection provided by enclosures (IP Code)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1 automatic pump
pump equipped with a sensing means that activates and deactivates the pump’s operation at predetermined liquid levels
3.2 nominal voltage
voltage commonly used on small craft (3.5) with direct current (DC), such as 6 V, 12 V or 24 V, and alternating current (AC) such as 110/120 V or 230/240 V
3.3 submersible pump
pump designed to be operated completely immersed in water
3.4 design voltage
113 % of nominal voltage (3.2)
switch(es) in the circuit and the bonding connection, if applicable. The recommended overcurrent protection for non-integrally protected bilge pumps shall be stated.
4.9 Centrifugal and axial flow pumps shall be capable of operating dry at their design voltage for at least 7 h without creating a fire hazard. Alternatively, a means integral with the pumps shall be provided to shut the pump off automatically to prevent a fire hazard.
4.10 Positive or semi-positive displacement pumps, i.e. those in which the impeller can be in continuous contact with the housing when operating dry, shall be capable of operating dry at their design voltage for at least 5 min without damage to the impeller or housing and for at least 1 h without creating a fire hazard. Alternatively, a means integral with the pumps shall be provided to shut the pump off automatically to prevent a fire hazard. Information shall be provided in the owner’s manual cautioning against operating the pump dry for more than 1 min.
BS EN ISO 8849:2021 pdf download
