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PD IEC TS 62257-9-5:2018



The latest, up-to-date edition.

Recommendations for renewable energy and hybrid systems for rural electrification Integrated systems. Laboratory evaluation of stand-alone renewable energy products for rural electrification

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British Standards Institution

This part of IEC 62257, which is a Technical Specification, applies to stand-alone renewable energy products having the following characteristics:

  • All components required to provide basic energy services are sold/installed as a kit or integrated into a single component, including at a minimum:

    • A battery/batteries or other energy storage device(s)

    • Power generating device, such as a solar panel, capable of charging the battery/batteries or other energy storage device(s)

    • Cables, switches, wiring, connectors and protective devices sufficient to connect the power generating device, power control unit(s) and energy storage device(s)

    • Loads (optional), such as lighting, load adapter cables (e.g., for mobile devices), and appliances (television, radio, fan, etc.).

  • The PV module maximum power point voltage and the working voltage of any other components in the kit do not exceed 35 V. Exceptions are made for AC-to-DC converters that meet appropriate safety standards.

    NOTE This voltage limit corresponds to the definition of decisive voltage classification A (DVC-A) for wet locations in Table 6 of IEC 62109-1:2010.

  • The peak power rating of the PV module or other power generating device is less than or equal to 350 W.

  • No design expertise is required to choose appropriate system components.

This document was written primarily for off-grid renewable energy products with batteries and solar modules with DC system voltages not exceeding 35 V and peak power ratings not exceeding 350 W. The tests contained herein are capable in many cases of adequately assessing systems at higher voltages and/or power ratings. In situations where the specifying organization agrees to apply these tests to products with higher voltages and power ratings, the test laboratory is responsible for ensuring that adequate safety measures are employed to protect technicians and test equipment. The specifying organization is also responsible for defining the consumer safety requirements of these products.

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