TP170 - Pravilnik o zaščiti nizkonapetostnih omrežij in pripadajočih transformatorskih postaj

This part of IEC 61936 provides requirements for the design and the erection of electrical power
installations in systems with nominal voltages exceeding 1 kV AC and nominal frequency up to
and including 60 Hz, so as to provide safety and proper functioning for the use intended.
For the purpose of interpreting this document, an electrical power installation is considered to
be one of the following:
a) substation, including substation for railway power supply;
b) electrical power installations on mast, pole and tower, switchgear and/or transformers
located outside a closed electrical operating area;
c) one (or more) power station(s) located on a single site, the electrical power installation
includes generators and transformers with all associated switchgear and all electrical
auxiliary systems. Connections between generating stations located on different sites are
excluded;
d) the electrical system of a factory, industrial plant or other industrial, agricultural, commercial
or public premises;
e) electrical power installations on offshore facilities for the purpose of generation,
transmission, distribution and/or storage of electricity;
f) transition towers/poles (between overhead lines and underground lines).
The electrical power installation includes, among others, the following equipment:
– rotating electrical machines;
– switchgear;
– transformers and reactors;
– converters;
– cables;
– wiring systems;
– batteries;
– capacitors;
– earthing systems;
– buildings and fences which are part of a closed electrical operating area;
– associated protection, control and auxiliary systems;
– large air core reactor.
NOTE 1 In general, equipment standards take precedence over the requirements of this document.
This document does not apply to the design and erection of any of the following:
– overhead and underground lines between separate electrical power installations;
– electrified railway tracks and rolling stock;
– mining equipment and installations;
fluorescent lamp installations;
– installations on ships according to IEC 60092 (all parts) and offshore units according to
IEC 61892 (all parts), which are used in the offshore petroleum industry for drilling,
processing and storage purposes;
– electrostatic equipment (e.g. electrostatic precipitators, spray-painting units);
– test sites;
– medical equipment, e.g. medical X-ray equipment.
This document does not apply to the design of prefabricated, type-tested switchgear and high
voltage/low voltage prefabricated substation, for which separate IEC standards exist.
NOTE 2 The scope of this document does not include the requirements for carrying out live working on electrical
power installations.
NOTE 3 The scope of this document considers safety requirements for HV installations and the influences of HV
installations on LV installations. For electrical installations up to 1 kV, IEC 60364 (all parts) applies.

Specifies essential requirements regarding protection against electric shock, including basic protection (protection against direct contact) and fault protection (protection against indirect contact) of persons and livestock. It deals also with the application and co-ordination of these requirements in relation to external influences. Requirements are also given for the application of additional protection in certain cases. Has the status of a group safety publication in accordance with IEC Guide 104.

Specifies essential requirements regarding protection against electric shock, including basic protection (protection against direct contact) and fault protection (protection against indirect contact) of persons and livestock. It deals also with the application and co-ordination of these requirements in relation to external influences. Requirements are also given for the application of additional protection in certain cases. Has the status of a group safety publication in accordance with IEC Guide 104.

The rules of this Part of IEC 60364 are intended to provide requirements for the safety of electrical installations in the event of voltage disturbances and electromagnetic disturbances generated for different specified reasons. The rules of this part are not intended to apply to systems for distribution of energy to the public, or power generation and transmission for such systems (see the scope of IEC 60364-1) although such disturbances may be conducted into or between electrical installations via these supply systems.

This European Standard contains the requirements for the design and erection of earthing 111 systems of electrical installations, in systems with nominal voltage above 1 kV a.c., so as to 112 provide safety and proper functioning for the use intended.