BS EN ISO 8849:2021 pdf free.Small craft一Electrically operated bilge pumps.
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 I EC 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 (Ii) 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 mm 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 mm.
5 Electrical requirements
5.1 Submersible pumps shall have watertight electrical connections, IP 67, in accordance with IEC 60529:20 13.
The use of a length of watertight electrical cable sealed at the pump connection is recommended, so that connections to the power supply can be made above the critical bilge-water level.
5.2 Metallic parts of a DC pump housing that can be exposed to contact with bilge water and can become a source of stray current leakage shall have provisions for equipotential bonding conductor connections.
Pumps designed with a double-insulated electrical system, requiring a break in two distinct insulation systems before electrical leakage can reach exposed metallic parts, do not require a bonding connection.
5.3 Bilge pumps shall be protected against continuously locked rotor conditions by
— integral overcurrent protection, or
— overcurrent protection in the circuit of a size to protect the bilge-pump motor,
— being capable of sustaining operation with a locked rotor for 7 h without generating surface temperatures in excess of 150 °C, at an ambient temperature of 60 °C, and without evidence of charring, burning or melting,
— temperatures not exceeding 150 °C when the pump operates at 120 % of nominal voltage in an ambient temperature of 60°C for 7 h.
5.4 DC bilge pumps shall be capable of withstanding a DC voltage of 500 V for 1 mm without leakage in excess of I mA. The test voltage shall be applied between the current-carrying parts and the noncurrent-carrying metal parts. lithe pump is internally earthed, the earth connection shall be broken in order to carry out this test.
AC bilge pumps shall be fitted with or supplied by a circuit protected by a residual current device (RCD).
5.5 Bilge pumps designed for automatic operation (automatic pumps) shall be provided with an override switch to permit manual operation if the automatic operation fails.
Each bilge pump shall be marked as follows, by a name-plate or other equally permanent means, with at least the following information:
— manufacturer’s name or identification;
— model and/or serial number;
— electrical rating in volts and amperes;
— a reference to this document, i.e. “ISO 8849”;
— output rating at 10 kPa (1 m lift) (see 4A);
— the reference “ISO 8846 MARINE” (if applicable).
7 Owner’s manual
The following information shall be included in the owner’s manual.
— The pump rating and capacities shall be stated in the installation and operating instructions provided with the pump.
— Installation and operating instructions shall be available for each bilge pump. An electrical diagram shall be provided. It shall identify each conductor and shall include the proper location of the control switch(es) in the circuit and the bonding connection, if applicable. The recommended overcurrent protection for non-integrally protected bilge pumps shall be stated.
— Information about the risk of operating a positive or semi-positive displacement pump in a dry condition.BS EN ISO 8849 pdf free download.Small craft