T/CRAAS 435-2020 Active Group standards

T/CRAAS 435-2020 Fan Filter Unit Test Method

Publish Date: 2020-12-12 Implement Date: 2021-03-21 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CRAAS 435-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Refrigeration technology

Publish Date: 2020-12-12

Implement Date: 2021-03-21

Scope

Main technical content: This standard covers the laboratory test methods for the performance of fan filter units (FFUs), which specify the test equipment and necessary test procedures. The test parameters include air volume, external static pressure, electrical parameters (current, voltage, power, and power factor), uniformity of face velocity, noise (sound power level), vibration (vibration velocity), total harmonic distortion rate of current, and air leakage. The test methods in this standard are applicable to fan filter units (FFUs) with a filter size not exceeding 1.5 meters (5 feet) in any direction. Fan filter units (FFUs) and equipment-end fan filter units (EFUs) of other sizes can refer to and adopt the test methods in this standard. The test methods in this standard are suitable for AC motors, DC brushless motors, and fan filter units with or without constant air volume control. This standard does not include filtration efficiency or the performance of the filter itself. These performance parameters can be referred to related standards such as IEST-RP-CC001, IEST-RP-CC007, IEST-RP-CC021, EN 1822-1~5, ISO 29463-1~5, and CRAA 431.1~5. This standard does not recommend acceptance values or limits for the performance parameters of fan filter units. Although some of the techniques described in this standard can be used for on-site testing, this standard does not provide key points for on-site testing. Certain specifications and standards may also stipulate the structure and performance of fan filter units, and these specifications and standards should also be part of the agreement between customers and suppliers. The purpose of this standard is to provide users and suppliers of FFUs with the necessary agreements to standardize the testing and reporting of FFU performance. The laboratory test methods in this standard enable direct comparison of the performance of FFU products produced by different manufacturers, even if the design and operating characteristics of