GOST R 52726-2007 PDF
Name in English:
GOST R 52726-2007
Name in Russian:
ГОСТ Р 52726-2007
Alternating current disconnectors and earthing switches for voltage above 1 kV and operating mechanisms for them. General specifications
Full title and description
GOST R 52726-2007 — "Разъединители и заземлители переменного тока на напряжение свыше 1 кВ и приводы к ним. Общие технические условия" (Alternating‑current disconnectors and earthing switches for voltages above 1 kV and operating mechanisms for them — General specifications). This national Russian standard establishes general technical requirements, tests and marking/packaging rules for high‑voltage disconnectors, earthing switches and their drives.
Abstract
This standard specifies design, mechanical and electrical performance, commutation capability, environmental/climatic requirements, interlocks and control circuits, verification tests and documentation requirements for alternating‑current disconnectors and earthing switches with nominal voltages above 1 kV, including manually and motor‑operated drives. It was developed with reference to IEC 62271‑102 and introduced as a national standard in 2008.
General information
- Status: Active / national standard in force (entered into effect 1 Jan 2008).
- Publication date: Approved 2007, introduced 1 January 2008 (document designation year 2007).
- Publisher: Approved and introduced by the Federal Agency for Technical Regulation and Metrology (Rosstandart) of the Russian Federation.
- ICS / categories: ICS/OКС class related to high‑voltage switchgear — OKC/ICS 29.120.40 (group E72).
- Edition / version: GOST R 52726‑2007 (first introduction; implemented amendments noted in later information bulletins).
- Number of pages: 55 pages (typical published text).
Scope
Covers alternating‑current disconnectors and earthing switches intended for nominal voltages above 1 kV and the associated operating mechanisms (manual, electric, pneumatic or hydraulic drives). The standard sets general technical conditions applicable to outdoor and indoor equipment, mechanical strength and climatic classes, switching/commutation requirements, tests, marking, packaging, transport and storage provisions. It is intended to be used alongside type‑specific technical documentation and product specifications.
Key topics and requirements
- Mechanical performance and endurance (mechanical lifecycle classes, wind and ice loading limits, handle/operating forces and drive performance requirements).
- Commutation capability — requirements for switching no‑load transformer currents, charging currents and specified equalizing currents for certain voltage levels.
- Insulation, impulse and power‑frequency test voltages and clearances appropriate to nominal voltage classes.
- Interlocking and safety — mechanical/electromagnetic interlocks between main and earthing blades, lockout provisions for drives and mandatory manual operation capability where required.
- Marking, documentation, packaging and transport requirements (identification data, rated voltages/currents, manufacturer information, protective packing).
- Reliability and lifecycle expectations — mean time to first repair and service life indicators (examples include minimum service lives and repair intervals specified in normative clauses).
Typical use and users
Intended for designers and manufacturers of high‑voltage switchgear (disconnectors and earthing switches), utilities and power system operators, testing and certification laboratories, installation and maintenance teams, and regulatory bodies overseeing conformity of electrical distribution equipment. The standard is used when developing technical specifications, type tests and acceptance procedures for equipment rated above 1 kV.
Related standards
Developed with reference to IEC 62271‑102 (high‑voltage disconnectors and earthing switches). Other related normative references and national standards cited in the text include earlier GOSTs (for example GOST 689‑90 for older devices), relevant IEC/GOST standards for impulse testing and insulation distances (e.g., standards analogous to IEC test procedures and GOST 1516.x series), and later national standards that reference or build on GOST R 52726‑2007.
Keywords
disconnectors, earthing switches, isolators, high‑voltage, switchgear, drives, IEC 62271‑102, GOST R, mechanical endurance, insulation, interlocks, marking, testing.
FAQ
Q: What is this standard?
A: A Russian national standard (GOST R 52726‑2007) that provides general technical requirements for alternating‑current disconnectors and earthing switches for voltages above 1 kV and for their operating mechanisms.
Q: What does it cover?
A: Design and performance criteria (mechanical and electrical), testing and verification methods, interlocks and control requirements, marking/packaging rules, climatic and mechanical loading conditions, and reliability/service‑life provisions for disconnectors and earthing switches.
Q: Who typically uses it?
A: Switchgear manufacturers, power utilities, engineering designers, certifying laboratories and maintenance personnel who specify, produce, test or maintain high‑voltage disconnectors and earthing switches.
Q: Is it current or superseded?
A: As published, GOST R 52726‑2007 was introduced on 1 January 2008 and is treated as an active national standard in vendor and standards catalog listings; users should confirm if any amendments or later revisions have been issued for their application.
Q: Is it part of a series?
A: It belongs to the suite of high‑voltage and electrical equipment national standards (group E72 / OKC 29.120.40) and references international IEC work (notably IEC 62271‑102). It is used alongside other GOST/GOST R standards that address complementary topics (testing, insulation, environmental classes).
Q: What are the key keywords?
A: Disconnectors, earthing switches (isolators), high‑voltage switchgear, drives, mechanical endurance, insulation tests, interlocks, marking, IEC 62271‑102.