BS EN ISO 13297:2021+A11:2023 ISO 13297:2020+A1:2022
11 Inverters and inverter/chargers, AC systems
11.1 Permanently installed inverters and inverter/chargers shall be non-rotating power inverters supplying less than 250 V rms AC at a frequency of 50 Hz or 60 Hz, and shall: a) be designed to operate up to an ambient temperature of 50 °C;
b) be designed to withstand an ambient temperature of 70 °C without damage or, if intended for installation in an engine compartment, 80 °C;
c) be automatically controlled; d) provide isolation of the AC output from the DC supply circuit; e) have controls which are readily accessible;
f) be located in a ventilated, dry, readily accessible site where ambient temperatures do not exceed the manufacturers operating temperature rating; NOTE
Inverters can be located in an accessible location if the controls are mounted in a readily accessible location.
g) be mounted away from heat sources; h) be mounted not less than 500mm above foreseeable levels of bilge water.
11.2 Inverter outlet circuits shall be protected in accordance with Clauses 13 and 14.
11.3 If required, inverters and inverter/chargers shall be ignition-protected in accordance with Clause 25 and shall be marked as such by the manufacturer, i.e. “IGNITION-PROTECTED ISO 8846:1990”.
11.4 DC conductor terminals or conductors shall be labelled as follows: a) DC+, or POS, or + b) DC–, or NEG, or –
11.5 A separate DC equipotential conductor shall be connected from the metallic case or chassis of the inverter or inverter/charger to the main grounding/earthing point or its bus, and be of an amperage rating equal to the DC positive conductor. This conductor shall not be connected to the DC negative at the inverter or inverter/charger.
If the craft is fitted with an insulated DC system, or if the inverter AC/DC power terminal enclosure is of double-insulated construction, this requirement may not apply.
11.6 Provision shall be made within the inverter or inverter/charger to permit the ready connection of three or more conductors with connectors meeting the requirements of 20.9 and 20.3. The terminals or conductors shall be labelled.
11.7 Inverter or inverter/charger integral switching shall switch all live AC conductors. Integral switching shall also disconnect the grounded (neutral) conductor from ground when an external supply is used.
12
© ISO 2022 – All rights reserved
Distributed by the RYA under licence number 2020ET001 © BSI
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48
