BS EN 61558-2-23:2001

1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 General notes on tests
6 Ratings
7 Classification
8 Marking and other information
9 Protection against electric shock
10 Change of input voltage setting
11 Output voltage and output current under load
12 No-load output voltage
13 Short-circuit voltage
14 Heating
15 Short-circuit and overload protection
16 Mechanical strength
17 Protection against harmful ingress of dust, solid objects
   and moisture
18 Insulation resistance, dielectric strength and leakage
   current
19 Construction
20 Components
21 Internal wiring
22 Supply connection and other external flexible cable or
   cords
23 Terminals for external conductors
24 Provisions for protective earthing
25 Screws and connections
26 Creepage distances, clearances and distances through
   insulation
27 Resistance to heat, fire and tracking
28 Resistance to rusting
Annexes
Annex L - Routine tests (production tests)
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Applies to stationary or portable single-phase or poly-phase air-cooled isolating or safety isolating transformers

Applies to stationary or portable single-phase or poly-phase air-cooled (natural or forced) independent or associated, isolating or safety isolating transformers intended for use on construction sites, having a rated supply voltage not exceeding 1 000 V a.c., and a rated frequency not exceeding 500 Hz. This part 2-23 is intended to be used in conjunction with IEC 61558-1. It has the status of a group safety publication in accordance with IEC Guide 104.