SNT 2.04.19-2000 PDF

Full title and description

SNT 2.04.19-2000 — Power supply of industrial enterprises. National construction norm (SNT) giving technical requirements, design guidance and minimum operational rules for planning, designing and organising electrical power supply systems for industrial plants and production sites.

Abstract

This document defines principles and technical requirements for the design and arrangement of electrical power supply for industrial enterprises. It covers selection of supply schemes, transformer and switchgear equipment, distribution networks, reliability categories, emergency and standby power provisions, protection and earthing, load and short-circuit calculations, and measures to ensure power quality and safe operation of industrial electrical systems.

General information

• Status: Active / in-force (national SNT document).
• Publication date: 2000.
• Publisher: National authority for construction standards (published as part of the SNT — Turkmenistan construction norms; customary publisher: Ministry of Construction / Ministry of Construction and Building Materials Industry, Ashgabat).
• ICS / categories: 29 (Electrical engineering) — particularly power transmission and distribution networks; related building electrical supply classifications.
• Edition / version: 2000 (original SNT edition).
• Number of pages: Approximately 35 pages (standard-format technical booklet).

Scope

SNT 2.04.19-2000 applies to the design, selection and arrangement of electrical supply systems for industrial enterprises and production facilities. It is intended for new designs, reconstructions and capacity upgrades and addresses medium- and low-voltage distribution within industrial sites, transformer substation arrangement, reliability and continuity criteria, protective devices, earthing and lightning protection measures, and requirements for emergency/backup power systems.

Key topics and requirements

• Classification of consumers and assignment of reliability categories for industrial loads.
• Recommended power supply schemes (single-source, ring, radial, sectionalised and redundant schemes) for various types of enterprises.
• Design rules for transformer substations and selection of transformer ratings and tap-changers.
• Medium- and low-voltage distribution layout, busbar arrangements and switchgear selection.
• Load calculation methods, diversity factors, peak demand estimation and short-circuit current calculations.
• Protection and automation: relay protection, coordination, selective tripping and switchgear protection settings.
• Earthing, lightning protection and equipotential bonding requirements for safety and equipment protection.
• Power quality considerations: voltage regulation, harmonic limits, reactive power compensation and filtering.
• Requirements for emergency, standby and reserve power sources (generators, UPS) and automatic transfer arrangements.
• Operational and maintenance provisions: marking, documentation, testing, routine inspections and safety procedures.

Typical use and users

Used by electrical design engineers, project managers, consulting organisations, power utility planners and technical departments of industrial enterprises when designing or upgrading internal power supply networks, specifying substations, protection schemes and backup power arrangements. Also referenced by construction authorities and commissioning teams during approval and acceptance of electrical works.

Related standards

Commonly used alongside other SNT-series construction norms and technical regulations (electrical and building codes) addressing electrical installation design, lighting and power equipment design, seismic and structural requirements for substations, and national rules for electrical installations. Examples (same SNT family): SNT 2.04.20 (design of electrical power and lighting equipment), adjacent SNT modules covering substations, distribution and building electrical systems. In practice, designers also consult relevant national electrical installation rules and international standards for protection and power quality.

Keywords

Power supply; Industrial enterprises; Electrical distribution; Transformer substations; Reliability categories; Emergency power; Earthing; Protection and automation; Load calculation; Power quality; SNT; Turkmenistan construction norms.

FAQ

Q: What is this standard?

A: SNT 2.04.19-2000 is a national construction norm that provides design and technical requirements for the electrical power supply of industrial enterprises.

Q: What does it cover?

A: It covers selection of supply schemes, transformer and switchgear design, distribution networks, load and short-circuit calculations, protection and earthing, power quality, and provisions for emergency and standby power for industrial sites.

Q: Who typically uses it?

A: Electrical design engineers, project consultants, utilities, facility owners and construction authorities involved in planning, designing, commissioning and maintaining industrial electrical supply systems.

Q: Is it current or superseded?

A: The document date is 2000 and it is presented as an active SNT norm. Users should check the latest national SNT compilations or local authority notices for any amendments or newer editions before relying on it for current designs.

Q: Is it part of a series?

A: Yes — it belongs to the SNT (national construction norms) series covering building and utility systems. Related SNT documents address electrical equipment design, lighting, substations and other construction disciplines.

Q: What are the key keywords?

A: Power supply, industrial enterprises, distribution networks, substations, reliability, earthing, protection, emergency power, load calculation, SNT.