Ansi hi 1.3 free download

The time now is PM. User Name. Remember Me? Ask Your Question Here. Mark Forums Read. March 28th, , AM. Garima Chauhan Super Moderator. Hydraulic Institute Pump Standards Version 2. Hydraulic Institute Engineering Data Book download. Yoga Institute Download. Another important addition is Appendix G string test , which covers performance testing of the entire pumping system—including the motor, pump and drive for example, gearbox, belt drive, etc. This is a less accurate method of determining the true pump efficiency, since the input power to the pump shaft is calculated by accounting for the published motor and drive efficiencies.

Since these efficiencies are not known precisely, this method of calculating pump input power is less accurate than when the shaft torque and rpm are directly measured. When a variable frequency drive VFD is used as part of the string, obtaining an accurate value of input power to the pump shaft becomes difficult. Although many VFDs provide an output power measurement, the value of this power is approximate and usually not accurate enough for acceptance testing.

This reading also does not account for the reduction in motor efficiency when operated on VFD power. Table G. The hydrostatic test pressure and test duration have been updated. The test pressure relates to the rated pressure at the ambient temperature of the item to be tested and is determined by the following equation:. The test duration is determined by the rated pressure level, with greater time required for those parts subjected to higher pressure. The Hydraulic Institute HI publishes standards that address definitions, nomenclature, pump applications, installation, operation and important test procedures for a variety of pump types.

As these standards evolve, pump professionals should consider how these standards impact the bottom line of their businesses and stay current with the latest standards.

For these reasons, keeping current with the most recent versions of these standards is necessary for pump users, engineering consulting firms, pump original equipment manufacturers OEMs , pump distributors and suppliers to the pump industry.

Gregg Romanyshyn is the technical director for the Hydraulic Institute. He can be reached at gromanyshyn pumps. He can be reached at mzolnick pumps. For a complete analysis of the new standard, visit www. Subscribe Now and Get: In-depth articles on pump industry issues Expert insights into important topics in the field Keep up with trends, basics, and more. Breadcrumbs You are here: Home. Related Articles Pumps.

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