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Technical standards represent the shared knowledge within a given industry. They define its best practices - specific technical criteria, methods, and benchmarks providing common structured methods and reliable data.

Standardization builds customer trust in products, services, and systems by ensuring that products, components, and services supplied by different companies will be mutually comparable or even compatible.

Dewesoft products - software calculation or hardware data acquisition - comply with international, national, and industry standards.

Vehicle Testing Standards

Vehicle testing and automotive standards supported with Dewesoft data acquisition equipment.

Vehicle Dynamics

  • ISO 4138: Specifies open-loop test methods for determining the steady-state circular driving behavior of passenger cars as defined in ISO 3833 and of light trucks, such behavior being one of the factors comprising vehicle dynamics and road-holding properties.
  • ISO 7401: Step steer input. Specifies open-loop test methods for determining the transient response behavior of road vehicles. It applies to passenger cars, as defined in ISO 3833, and to light trucks.
  • ISO 7401: Step steer non-linear.
  • ISO 13674-1: Test method for the quantification of on-center handling - Part 1: Weave test. Specifies a test schedule that addresses a particular aspect of the on-center handling characteristics of a vehicle: the weave test. It applies to passenger cars following ISO 3833, and light trucks.
  • ISO 7401 and ISO TR-8726: Pseudo-Random Steer. This Technical Report specifies a method for determining transient response behavior at an approximately constant speed. The quasi-open-loop maneuver used in this method is not representative of real driving conditions but is useful in obtaining measures of vehicle transient behavior in terms that will enable the response to any deterministic input to be calculated. Applies to passenger cars as defined in ISO 3833. In a simplified form, this test method is also specified in ISO 7401 together with alternative and complementary procedures.
  • ECE 13H: Slowly increasing steer. Uniform provisions concerning the approval of passenger cars concerning braking.
  • ECE 13H: Sine with dwell.

Brake Noise Testing

  • VDA 303: Description of noisy brake applications concerning brake squeal.
  • SAE J2521: Disc and drum brake dynamometer squeal noise test procedure. The standard is applicable to high-frequency squeal noise occurrences for on-road passenger cars and light trucks below 4,540 kg of GVWR.

Brake Testing

  • ECE 13H: Passenger car braking. Uniform provisions concerning the approval of passenger cars concerning braking.
  • ECE R90: ECE regulation specifying design, construction, and performance requirements and test protocols for replacement brake linings for roadgoing motor vehicles and trailers.
  • ECE R78: Uniform provisions concerning the approval of vehicles of categories L1, L2, L3, L4, and L5 with regard to braking.
  • ISO 21994: Passenger cars. Stopping distance at straight-line braking with ABS — Open-loop test method. 
  • FMVSS 135: Light vehicle brake systems.
  • SAE J2909: Light vehicle dry stopping distance.

Vibration Measurement and Analysis Standards

Vibration testing and vibration analysis standards supported with Dewesoft data acquisition equipment.

Human Body Vibration

  • ISO 5349: Mechanical vibration, measurement, and evaluation of human exposure to hand-transmitted vibration.
  • ISO 8041: Specifies the performance specifications and tolerance limits for instruments designed to measure vibration values, to assess human response to vibration. It includes requirements for pattern evaluation, or validation, periodic verification, in situ checks, and the specification of vibration calibrators for in situ checks.
  • ISO 2631-1 and ISO 2631-5: Mechanical vibration and shock - evaluation of human exposure to whole-body vibration. Addresses human exposure to multiple mechanical shocks, and it formulates requirements for the measurement of multiple shocks. The results of these measurements are then analyzed to provide information for the assessment of the risk of adverse health effects to the vertebral end-plates of the lumbar spine for seated individuals due to compression.
  • ISO/TR 18570: Mechanical vibration, measurement, and evaluation of human exposure to hand transmitted vibration. Supplementary method for assessing the risk of vascular disorders.

Acoustics Testing Standards

Acoustics testing and analysis standards supported with Dewesoft data acquisition equipment.

Sound Intensity

  • ISO 9614-1: Determination of sound power levels of noise sources using sound intensity - Part 1: Measurement at discrete points. Specifies a method for measuring the component of sound intensity normal to a measurement surface which is chosen to enclose the noise source(s) of which the sound power level is to be determined. 
  • ISO 9614-2: Determination of sound power levels of noise sources using sound intensity - Part 2: Measurement by scanning. Specifies a method for measuring the component of sound intensity normal to a measurement surface which is chosen to enclose the noise source(s) of which the sound power level is to be determined.

Sound Quality

  • ISO 7779: Measurement of airborne noise emitted by information technology and telecommunications equipment. 
  • ISO 226: Acoustics - Normal equal-loudness-level contours. This International Standard specifies combinations of sound pressure levels and frequencies of pure continuous tones which are perceived as equally loud by human listeners. 
  • ISO 532-1: Methods for calculating loudness - Part 1: Zwicker method. The method for stationary sounds is provided for reasons of continuity and also offers the use of measured one-third-octave-band levels as input.
  • ISO 532-2: Acoustics - Methods for calculating loudness - Part 2: Moore-Glasberg method. This method can be applied to tones, broadband noises, and complex sounds with sharp line spectral components, for example, transformer hum or fan noise.

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Sound Power

  • ISO 3741: Determination of sound power levels and sound energy levels of noise sources using sound pressure. Precision methods for reverberation test rooms. Specifies methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured in a reverberation test room.
  • ISO 3744: Determination of sound power levels and sound energy levels of noise sources using sound pressure. Engineering methods for an essentially free field over a reflecting plane. Specifies methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in an environment that approximates to an acoustic free field near one or more reflecting planes.
  • ISO 3743-1: Determination of sound power levels and sound energy levels of noise sources using sound pressure. Engineering methods for small movable sources in reverberant fields - Part 1: Comparison method for a hard-walled test room.
  • ISO 3743-2: Determination of sound power levels of noise sources using sound pressure. Engineering methods for small, movable sources in reverberant fields - Part 2: Methods for special reverberation test rooms.
  • ISO 3745: Determination of sound power levels and sound energy levels of noise sources using sound pressure. Precision methods for anechoic rooms and Hemi-anechoic rooms.
  • ISO 6393: Earth-moving machinery. Determination of sound power level. Stationary test conditions. Specifies a method for determining the noise emitted to the environment by earth‑moving machinery, measured in terms of the A-weighted sound power level while the machine is stationary with the engine operating at the rated speed under no-load conditions.
  • ISO 6394: Earth-moving machinery. Determination of emission sound pressure level at operator's position - Stationary test conditions. Specifies a method for determining the emission sound pressure level of earth-moving machinery at the operator's position, measured in terms of the time-averaged A-weighted emission sound pressure level while the machine is stationary with the engine operating at the rated speed under no-load condi­tions.
  • ISO 6395: Earth-moving machinery. Determination of sound power level - Dynamic test conditions. Specifies a method for determining the noise emitted to the environment by earth-moving machinery, measured in terms of the A-weighted sound power level while the machine is operating under dynamic test conditions.
  • ISO 6396: Earth-moving machinery. Determination of emission sound pressure level at operator's position - Dynamic test conditions. Specifies a method for determining the emission sound pressure level of earth-moving machinery at the operator's position, measured in terms of the time-averaged A-weighted emission sound pressure level while the machine is operating under dynamic test conditions.

Sound Level Meter

  • IEC 61672: Electroacoustics - Sound level meters - Part 1: Specifications. Gives electroacoustical performance specifications for three kinds of sound measuring instruments: time-weighting sound level meters, integrating-averaging sound level meters, and integrating sound level meters.

Octave Analysis

  • IEC 61260: Electroacoustics - Octave-band and fractional-octave-band filters - Part 1: Specifications. Specifies performance requirements for analog, sampled-data, and digital implementations of band-pass filters. 

Acoustic Calibration

  • IEC 61672: Electroacoustics - Sound level meters - Part 1: Specifications. Gives electroacoustical performance specifications for three kinds of sound measuring instruments: time-weighting sound level meters, integrating-averaging sound level meters, and integrating sound level meters.
  • IEC 60651/ 60804: Class 1 & Type 1 sound level meters for occupational noise and environmental noise.
  • BS 7580: Specification for the verification of sound level meters. Comprehensive procedure.
  • ANSI S1 4: Specification for sound level meters. This standard provides the minimum requirements for three basic types of sound level meters.
  • ANSI S1.43: Specifications for integrating-averaging sound level meters describe instruments for the measurement of frequency-weighted and time-averaged sound pressure levels.
  • IEC 61260: Electroacoustics - Octave-band and fractional-octave-band filters - Part 1: Specifications. Specifies performance requirements for analog, sampled-data, and digital implementations of band-pass filters. 
  • IEC 60225: Octave, half-octave, and third-octave band filters intended for the analysis of sounds and vibrations.
  • IEC 60942: Electroacoustics - Sound calibrators. Specifies the performance requirements for three classes of sound calibrator: class LS (Laboratory Standard), class 1, and class 2. 
  • IEC 61094-4: Measurement microphones. Part 4: Specifications for working standard microphones. Specifies mechanical dimensions and certain electroacoustical characteristics for working standard microphones used in measuring systems for the determination of sound pressure to enable these microphones to be used as transfer standards in the calibration of acoustic measurement instruments.
  • IEC 61094-6: Measurement microphones. Part 6: Electrostatic actuators for determination of frequency response. 

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Power and Energy Measurement Standards

Dewesoft power analyzers meet the following standards

  • EN 61000-4-7: General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto. Applies to instrumentation intended for measuring spectral components in the frequency range up to 9 kHz which are superimposed on the fundamental of the power supply systems at 50 Hz and 60 Hz.
  • EN 61000-4-15: Electromagnetic compatibility (EMC). Testing and measurement techniques. Flickermeter. Functional and design specifications.
  • EN 61000-4-30: Class A: Electromagnetic compatibility (EMC). Testing and measurement techniques. Power quality measurement methods.
  • EN 61400-21: Wind turbines. Measurement and assessment of power quality characteristics of grid-connected wind turbines.

Regarding immunity, we meet

  • EN 61000-4-4: Electrical fast transient/burst immunity test. Immunity standard based on electrical fast transient (EFT) / burst transients.
  • EN 61000-4-11: Voltage dips, short interruptions, and voltage variations immunity tests. Defines the immunity test methods and range of preferred test levels for electrical and electronic equipment connected to low-voltage power supply networks for voltage dips, short interruptions, and voltage variations.

With our equipment, we can perform evaluations/calculations based on the following standards

Voltage characteristics in the public network or industrial networks

  • EN 50160: Voltage characteristics of electricity supplied by public electricity networks. Defines, describe and specify the main characteristics of the voltage at a network user's supply terminals in public low voltage, medium, and high voltage AC electricity networks under normal operating conditions. This standard describes the limits or values within which the voltage characteristics can be expected to remain at any supply terminal in public European electricity networks and does not describe the average situation usually experienced by an individual network user. 
  • IEC 50163 (EN 50163): Railway applications. Supply voltages of traction systems.
  • IEC 61000-2-2 (EN 61000-2-2): Electromagnetic compatibility (EMC). Environment. Compatibility levels for low-frequency conducted disturbances and signaling in public low-voltage power supply systems. This standard is concerned with conducted disturbances in the frequency range from 0 kHz to 9 kHz, with an extension up to 148,5 kHz specifically for mains signaling systems. 
  • IEC 61000-2-4  (EN 61000-2-4): Electromagnetic compatibility (EMC). Environment. Compatibility levels in industrial plants for low-frequency conducted disturbances. This standard is concerned with conducted disturbances in the frequency range from 0 kHz to 9 kHz. It gives numerical compatibility levels for industrial and non-public power distribution systems at nominal voltages up to 35 kV and a nominal frequency of 50 Hz or 60 Hz.
  • IEC 61000-2-12 (EN 61000-2-12): Electromagnetic compatibility (EMC). Environment. Compatibility levels for low-frequency conducted disturbances and signaling in public medium-voltage power supply systems.  This standard is concerned with conducted disturbances in the frequency range from 0 kHz to 9 kHz, with an extension up to 148,5 kHz specifically for mains signaling systems. 

Repercussions in power supply networks

  • IEC 61000-3-2 (EN 61000-3-2): Electromagnetic compatibility (EMC). Limits for harmonic current emissions (equipment input current ≤ 16 A per phase). Is an international standard that limits mains voltage distortion by prescribing the maximum value for harmonic currents from the second harmonic up to and including the 40th harmonic current. 
  • IEC 61000-3-3 (EN 61000-3-3): Electromagnetic compatibility (EMC). Limitation of voltage changes, voltage fluctuations, and flicker in public low-voltage supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional connection.
  • IEC 61000-3-11 (EN 61000-3-11): Electromagnetic compatibility (EMC). Limits of voltage changes, voltage fluctuations, and flickers in public low-voltage supply systems. Equipment with rated current ≤ 75 A and subject to conditional connection. This standard is concerned with the emission of voltage changes, voltage fluctuations, and flicker produced by equipment and impressed on the public low-voltage supply system. It specifies the limits of voltage changes produced by equipment tested under specified conditions.
  • IEC 61000-3-12 (EN 61000-3-12): Electromagnetic compatibility (EMC). Limits for harmonic currents produced by equipment connected to public low-voltage systems with input current > 16 A and ≤ 75 A per phase.
  • IEC 61400-21 (EN 61400-21): Wind turbines. Measurement and assessment of power quality characteristics of grid-connected wind turbines.

Energy management

  • DIN EN 16001: Energy management systems. This standard specifies requirements for establishing, implementing, maintaining, and improving an energy management system. Such a system takes into account legal obligations with which the organization must comply and other requirements to which it may subscribe. It enables the organization to take a systematic approach to the continual improvement of its energy efficiency. The standard lays down requirements for continual improvement in the form of more efficient and more sustainable energy use, irrespective of the type of energy. 

Renewable and/or decentralized generation units (above all: Wind, Solar, CHP)

  • IEC 61400-12-1 (EN 61400-12-1): Wind power generation systems. Power performance measurements of electricity producing wind turbines. Specifies a procedure for measuring the power performance characteristics of a single wind turbine and applies to the testing of wind turbines of all types and sizes connected to the electrical power network. In addition, this standard describes a procedure to be used to determine the power performance characteristics of small wind turbines (as defined in IEC 61400-2) when connected to either the electric power network or a battery bank. 
  • IEC 61400-21 (EN 61400-21): Wind turbines. Measurement and assessment of power quality characteristics of grid-connected wind turbines. This part of IEC 61400 includes definition and specification of the quantities to be determined for characterizing the power quality of a grid-connected wind turbine; measurement procedures for quantifying the characteristics; procedures for assessing compliance with power quality requirements, including estimation of the power quality expected from the wind turbine type when deployed at a specific site, possibly in groups.
  • VDE-AR-N 4105: Generators connected to the low-voltage distribution network. Technical requirements for the connection to and parallel operation with low-voltage distribution networks. 
  • FGW-TG3 (FGW-TR3): Determination of the electrical characteristics of power generating units and systems, storage systems as well as their components in medium-, high- and extra-high voltage grids.
  • TOR D2: Regulations for the assessment of network disturbances.

Structural Testing Standards

  • ISO 18431-4:2007: Mechanical vibration and shock. Signal processing - Part 4. Shock-response spectrum analysis: ISO 18431-4:2006 specifies methods for the digital calculation of a shock-response spectrum (SRS) given an acceleration input, using digital filters. The filter coefficients for different types of shock-response spectra are given together with recommendations for adequate sampling frequency.

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