BS EN 60034-1:2010 pdf free download

BS EN 60034-1:2010 pdf free download.Rotating electrical machines Part 1: Rating and performance.
This part of IEC 60034 is applicable to all rotating electrical machines except those covered by other IEC standards, for example, IEC 60349 [1011>.
Machines within the scope of this standard may also be subject to superseding, modifying or additional requirements in other publications, for example. IEC 60079 [8J and IEC 60092 [9].
NOTE If particular clauses of this standard are modified to meet special applications, for example machines subject to radioactivity or machines for aerospace, all other clauses apply insofar as they are compatible.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60027-1, Letter symbols to be used in electrical technology – Pert 1: General
IEC 60027-4, Letter symbols to be used in electrical technology – Part 4: Rotating electrical machines
IEC 60034-2 (all parts), Rotating electrical machines — Part 2: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles)
IEC 60034-3, Rotating electrical machines — Part 3: Specific requirements for synchronous generators driven by steam turbines or combustion gas turbines
IEC 60034-5, Rotating electrical machines – Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) — Classification
IEC 60034-8, Rotating electrical machines — Part 8: Terminal markings and direction of rotation
IEC 60034-12, Rotating electrical machines – Part 12: Starting performance of single-speed three-phase cage induction motors
IEC 60034-15, Rotating electrical machines – Part 15: Impulse voltage withstand levels of form-wound stator coils for rotating a.c. machines
3 Terms and definitions
For the purposes of this document, the terms and definitions in IEC 60050-411, some of which are repeated here for convenience, and the following terms and definitions apply.
4 Duty
4.1 Declaration of duty
It is the responsibility of the purchaser to declare the duty. The purchaser may describe the duty by one of the following:
a) numerically, where the load does not vary or where it varies in a known manner;
b) as a time sequence graph of the variable quantities;
c) by selecting one of the duty types Si to SlO that is no less onerous than the expected duty.
The duty type shall be designated by the appropriate abbreviation, specified in 4.2. written after the value of the load.
An expression for the cyclic duration factor is given in the relevant duty type figure.
The purchaser normally cannot provide values for the moment of inertia of the motor (GM) or the relative thermal life expectancy (TL), see Annex A. These values are provided by the manufacturer.
Where the purchaser does not declare a duty, the manufacturer shall assume that duty type Si (continuous running duty) applies.
4.2 Duty types
4.2.1 Duty type SI — Continuous running duty
Operation at a constant load maintained for sufficient time to allow the machine to reach thermal equilibrium, see Figure 1.
The appropriate abbreviation is Si.BS EN 60034-1 pdf free download.