ISO 7176-21:2009 車椅子 — Part 21: 電動車椅子とスクーター、およびバッテリー充電器の電磁両立性の要件と試験方法 | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, 2.

The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 7176-21 was prepared by Technical Committee ISO/TC 173, Assistive products for persons with disability, Subcommittee SC 1, Wheelchairs.

This second edition cancels and replaces the first edition (ISO 7176-21:2003), which has been technically revised.

ISO 7176 consists of the following parts, under the general title Wheelchairs:

• Part 1: Determination of static stability
• Part 2: Determination of dynamic stability of electric wheelchairs
• Part 3: Determination of effectiveness of brakes
• Part 4: Energy consumption of electric wheelchairs and scooters for determination of theoretical distance range
• Part 5: Determination of dimensions, mass and manoeuvring space
• Part 6: Determination of maximum speed, acceleration and deceleration of electric wheelchairs
• Part 7: Measurement of seating and wheel dimensions
• Part 8: Requirements and test methods for static, impact and fatigue strengths
• Part 9: Climatic tests for electric wheelchairs
• Part 10: Determination of obstacle-climbing ability of electrically powered wheelchairs
• Part 11: Test dummies
• Part 13: Determination of coefficient of friction of test surfaces
• Part 14: Power and control systems for electrically powered wheelchairs and scooters — Requirements and test methods
• Part 15: Requirements for information disclosure, documentation and labelling
• Part 16: Resistance to ignition of upholstered parts — Requirements and test methods
• Part 19: Wheeled mobility devices for use as seats in motor vehicles
• Part 21: Requirements and test methods for electromagnetic compatibility of electrically powered wheelchairs and scooters, and battery chargers
• Part 22: Set-up procedures
• Part 23: Requirements and test methods for attendant-operated stair-climbing devices
• Part 24: Requirements and test methods for user-operated stair-climbing devices
• Part 26: Vocabulary

A Technical Report (ISO/TR 13570-1, Wheelchairs — 1: Guidelines for the application of the ISO 7176 series on wheelchairs) is also available, giving information on how to use the ISO 7176 standards when selecting a wheelchair and helping readers to understand the purpose for, and content of, the International Standards on wheelchairs.

Introduction

Electrically powered wheelchairs and their battery chargers are meant to operate without introducing significant electromagnetic disturbances into the environment and without significant degradation of operational performance in the presence of electromagnetic disturbances expected in normal use. Wheelchairs are often used near roads and therefore should be immune to radio frequency fields from both static and mobile communications equipment, as well as from other sources of electromagnetic disturbance. Injury could occur in the event of unintentional movement or change in direction of movement of a wheelchair.

This part of ISO 7176 specifies requirements and test methods for wheelchairs and their battery chargers to minimize the risks associated with their exposure to reasonably foreseeable electromagnetic interference and electrostatic discharge and with their production of electromagnetic fields that could impair the operation of other devices or equipment in their usual environment.

The upper frequency limit and test level for radiated r.f. immunity requirements are selected according to the environment in which the wheelchair is used and the related risk. Hence the requirements for a wheelchair while it is driving are consistent with its use as a medical device, but the requirements for charging are consistent with use of the wheelchair and charger as domestic electrical equipment.

1 Scope

This part of ISO 7176 specifies requirements and test methods for electromagnetic emissions and for electromagnetic immunity of electrically powered wheelchairs and scooters with a maximum speed of not more than 15 km/h intended for indoor and/or outdoor use by people with disabilities. It is also applicable to manual wheelchairs with an add-on power kit. It is not applicable to vehicles designed to carry more than one person.

This part of ISO 7176 also specifies requirements and test methods for the electromagnetic compatibility of battery chargers intended for use with electrically powered wheelchairs and scooters.

A reference configuration is specified for adjustable wheelchairs and scooters in order to enable test results to be used for comparison of performance.

2 Normative references

The following referenced documents are indispensable for the application 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.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.