I.S. EN 50091-1:1993
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Hardcopy , PDF
10-22-2003
English
11-05-1993
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.
1 General
1.1 Scope
1.2 Definitions
1.3 General requirements
1.4 General conditions for tests
1.5 Components
1.6 Power interface
1.7 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 AC and DC 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
Annex A: Test for resistance to heat and fire (normative)
Annex B: Motor test under abnormal conditions (normative)
Annex C: Transformers (normative)
Annex D: Measuring instrument for earth leakage current
test (normative)
Annex E: Temperature rise of a winding (normative)
Annex F: Measurement of creepage distances and clearances
(normative)
Annex G: Earth leakage current for equipment intended to be
connected directly to IT power systems (normative)
Annex H: Guidance on protection against ingress of water
and foreign objects (informative)
Annex J: Table of electrochemical potentials (informative)
Annex K: Thermal controls (normative)
Annex L: Backfeed protection test (normative)
Annex M: Examples of normal load conditions (normative)
Annex N: Ventilation of battery compartments (normative)
Annex P: Normative reference to International Publications
(normative)
Annex Q: A-Deviations (informative)
Important note : All end users must be registered with an Account prior to user licenses being assigned.Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.