What is PD IEC/TS 61936-2 - Power installations exceeding 1 kV a.c. and 1,5 kV d.c. about?  
PD IEC/TS 61936-2 provides, in a convenient form, common rules for the design and the erection of electrical power installations in systems with nominal voltages above 1,5 kV d.c., so as to provide safety and proper functioning for the use intended.
Note1: PD IEC/TS 61936-2 does not apply to the design and erection of any of the following:
- Overhead and underground lines between separate installations
- Electric railways
- Mining equipment and installations
- Installations on ships and offshore installations
- Electrostatic equipment (e.g., electrostatic precipitators, spray-painting units)
- Test sites
- Medical equipment, e.g., medical X-ray equipment
- Valve hall
Note2: PD IEC/TS 61936-2 does not apply to the design of factory-built, type-tested switchgear for which separate IEC standards exist.
Note3: PD IEC/TS 61936-2 does not apply to the requirements for carrying out live working on electrical installations. PD IEC/TS 61936-2 does not apply to the design of factory-built, type-tested thyristor valves, VSC valves, and switchgear for which separate IEC standards exist.
Who is PD IEC/TS 61936-2- Power installations exceeding 1 kV a.c. and 1,5 kV d.c for? 
PD IEC/TS 61936-2 on power installations exceeding 1 kV a.c. and 1,5 kV d.c.
is useful for: 
- Electrical engineers
- Power management organizations
- Electrical testing engineers
Why should you use PD IEC/TS 61936-2 - Power installations exceeding 1 kV a.c. and 1,5 kV d.c?  
There are few national laws, standards, and internal rules dealing with the matter coming within the scope of this technical specification, and these practices have been taken as the basis for this work. PD IEC/TS 61936-2 contains the minimum requirements valid for IEC countries and some additional information that ensures acceptable reliability of an installation and its safe operation.
PD IEC/TS 61936-2 is published as a Technical Specification in order to welcome contribution and involvement from a wider audience. This may provide the basis for a future international standard. The publication of PD IEC/TS 61936-2 is believed to be a decisive step towards the gradual alignment all over the world of the practices concerning the design and erection of
high voltage power installations. Particular requirements for transmission and distribution installations as well as particular requirements for power generation and industrial installations are included in PD IEC/TS 61936-2.
