ISO
ISO
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Technical committeeTypeAcronymISO 10767-1CommitteePublished year2015Description
ISO 10767-1:2015 establishes a test procedure for measuring the source flow ripple and source impedance of positive-displacement hydraulic pumps. It is applicable to all types of positive-displacement pumps operating under steady-state conditions, irrespective of size, provided that the pumping frequency is in the range from 50 Hz to 400Hz.
Source flow ripple causes fluid borne vibration (pressure ripple) and then airborne noise from hydraulic systems. This procedure covers a frequency range and pressure range that have been found to cause many circuits to emit airborne noise which presents a major difficulty in design of hydraulic fluid power systems. Once the source flow ripple and source impedance of hydraulic fluid power pump are known, the pressure ripple generated by the pump in the fluid power system can be calculated by computer simulation using the known ripple propagation characteristics of the system components. As such, this part of ISO 10767 allows the design of low noise fluid power systems to be realized by establishing a uniform procedure for measuring and reporting the source flow ripple and the source impedance characteristics of hydraulic fluid power pumps.
In ISO 10767-1:2015, calculation is made for blocked acoustic pressure ripple as an example of the pressure ripple. An explanation of the methodology and theoretical basis for this test procedure is given in Annex B. The test procedure is referred to here as the two pressures/two systems method. Ratings are obtained as follows:
a) source flow ripple (in the standard "Norton" model) amplitude, in cubic meter per second[m3/s], and phase, in degree, over 10 individual harmonics of pumping frequency;
b) source flow ripple (in the modified model) amplitude, in cubic meter per second [m3/s], and phase, in degree, over 10 individual harmonics of pumping frequency; and its time history wave form,
c) source impedance amplitude, in Newton second per meter to the power of five [(Ns)/m5]., and phase, in degree, over 10 individual harmonics of pumping frequency;
d) blocked acoustic pressure ripple, in MPa (1 MPa = 106 Pa) or in bar (1 bar = 105 Pa), over 10 individual harmonics of pumping frequency; and the RMS average of the pressure ripple harmonic f1 to f10.
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Technical committeeTypeAcronymISO 10766CommitteePublished year2014Description
ISO 10766:2014 specifies the preferred range of nominal dimensions and associated tolerances for a series of hydraulic cylinder piston and rod housings for rectangular-section-cut bearing rings, of the type shown in Clause 5, for applications in the following range of dimensions:
for cylinders with bores of 16 mm to 500 mm, inclusive;
for rods with diameters of 12 mm to 450 mm, inclusive.
ISO 10766:2014 does not give details of cut bearing ring design, because the manner of construction of cut bearing rings varies with each manufacturer.Technology -
Technical committeeTypeAcronymISO 10763CommitteePublished year2020Description
This document specifies sizes and nominal working pressures for seamless and welded precision steel tubes with outside diameters in accordance with ISO 4397, and wall thicknesses and mechanical properties in accordance with ISO 3305. The nominal working pressures included in this document reflect a design factor ratio of 4 to 1 applied to the calculated burst pressures.
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Technical committeeTypeAcronymISO 10762CommitteePublished year2015Description
ISO 10762:2015 establishes mounting dimensions for cylinders for use at 10 MPa [100 bar[1]], as required for interchangeability of these cylinders.
NOTE This International Standard allows manufacturers of hydraulic equipment flexibility in the design of 10 MPa (100 bar) cylinders and does not restrict technical development; however, it does provide basic guidelines.
[1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.
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Technical committeeTypeAcronymISO 10372CommitteePublished year1992Description
Specifies the dimensions of surfaces on which servovalves are mounted in order to ensure interchangeability. Applies primarily to electrohydraulic flow-control servovalves. In addition, may be used for pressure-control servovalves. If the valve is used in a three-port application, either service port (A and B) may be omitted.
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Technical committeeTypeAcronymISO 10100CommitteePublished year2020Description
This document specifies acceptance and function tests for hydraulic fluid power cylinders.
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Technical committeeTypeAcronymIEC 62752CommitteePublished year2016Description
IEC 62752 applies to in-cable control and protection devices (IC-CPDs) for mode 2 charging of electric road vehicles, hereafter referred to as IC-CPD including control and safety functions. This standard applies to portable devices performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value.
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Technical committeeTypeAcronymIEC 62351-10CommitteePublished year2012KeywordsDescription
IEC/TR 62351-10:2012(E) targets the description of security architecture guidelines for power systems based on essential security controls, i.e. on security-related components and functions and their interaction. Furthermore, the relation and mapping of these security controls to the general system architecture of power systems is provided as a guideline to support system integrators to securely deploy power generation, transmission, and distribution systems applying available standards.
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AcronymISO/IEC 27019CommitteePublished year2013Description
Information security management guidelines for process control systems used in the energy utility industry on the basis of ISO/IEC 27002
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TypeAcronymISO/IEC 27031CommitteePublished year2011Description