I.S. EN 50091-1-1:2004
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
UNINTERRUPTIBLE POWER SYSTEMS (UPS) - PART 1-1: GENERAL AND SAFETY REQUIREMENTS FOR UPS USED IN OPERATOR ACCESS AREAS
Hardcopy , PDF
09-06-2016
English
02-02-2006
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Foreword
1 General
1.1 Scope
1.2 Normative references
1.3 Definitions
1.4 General requirements
1.5 General conditions for tests
1.6 Components
1.7 Power interfaces
1.8 Marking and instructions
2 Fundamental design requirements
2.1 Protection against electric shock and energy
hazards
2.2 Insulation
2.3 Safety Extra-Low voltage (SELV) circuits
2.4 Limited current circuits
2.5 Provisions for protective earthing
2.6 A.C. and D.C. power isolation
2.7 Overcurrent and earth fault protection
2.8 Protection of personnel - safety interlocks
2.9 Clearances, creepage distances and distances
through insulation
2.10 External signalling circuits
2.11 Limited power source
2.12 Protection of the applied load
3 Wiring, connections and supply
3.1 General
3.2 Connection to power
3.3 Wiring terminals for external power conductors
4 Physical requirements
4.1 Stability and mechanical hazards
4.2 Mechanical strength and stress relief
4.3 Construction details
4.4 Resistance to fire
4.5 Battery location
5 Thermal and electrical requirements
5.1 Heating
5.2 Earth leakage current
5.3 Electric strength
5.4 Abnormal operating and fault conditions
Annexes
A (normative) Test for resistance to heat and fire
B (normative) Motor test under abnormal conditions
C (normative) Transformers
D (normative) Measuring instruments for earth leakage
current test
E (normative) Temperature rise of a winding
F (normative) Measurements of creepage distances and
clearances
G (normative) Earth leakage current for UPS intended to be
connected directly to IT power systems
H (informative) Guidance on protection against ingress
of water and foreign objects
J (informative) Table of electrochemical potentials
K (normative) Thermal controls
L (normative) Backfeed protection test
M (normative) Examples of reference load conditions
N (normative) Ventilation of battery compartments
P (Void - contents transferred to 1.2 Normative references
Q (informative) A-Deviations
R (normative) Special national conditions
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