BS 7275-3:1995
Current
The latest, up-to-date edition.
Determination of hydraulic fluid power motor characteristics Method at constant flow and at constant torque
Hardcopy , PDF
English
15-03-1995
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Committees responsible
National foreword
Introduction
Method
1. Scope
2. Normative references
3. Definitions
4. Symbols
5. Test installation
6. Pretest data
7. Test conditions
8. Test procedure
9. Expression of results
10. Test report
Annex
A. (normative) Classes of measurement accuracy
B. (normative) Use of practical units
Tables
1. Symbols and units
A.1 Permissible systematic errors of measuring
instruments as determined during calibration
B.1 Practical units
Figure
1. Typical hydraulic test circuit
Describes a method of determining the low speed characteristics of positive displacement rotary fluid power motors under constant flow and constant torque conditions. Coverage includes: symbols, pretest data and test procedure. Also gives definitions and tables.
| Committee |
MCE/18
|
| DevelopmentNote |
Reviewed and confirmed by BSI, May, 2005. (04/2005) Also numbered as ISO 4392-3 Supersedes 92/78189 DC (09/2005)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO 4392 describes a method of determining the low-speed characteristics of positive-displacement rotary fluid power motors under constant flow and constant torque conditions. Motors may be of either the fixed or variable-displacement type.
The method involves testing at slow speeds, which may generate frequencies having a significant influence upon the steady continuous torque output of the motor and affect the system to which the motor would be connected.
The accuracy of measurement is divided into three classes, A, B and C, which are explained in Annex A.
| ISO 5598:2008 | Fluid power systems and components Vocabulary |
| ISO 4391:1983 | Hydraulic fluid power Pumps, motors and integral transmissions Parameter definitions and letter symbols |
| BS 4617:1983 | Methods for determining the performance of pumps and motors for hydraulic fluid power transmission |
| BS 2917-1:1993 | Graphic symbols and circuit diagrams for fluid power systems and components. Specification for graphic symbols |
| BS 7250:1989 | Methods of determining the derived capacity of hydraulic fluid power positive displacement pumps and motors |
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