GOST 7866.1-76 PDF

Full title and description

GOST 7866.1-76 — "Shipboard cables, rubber insulated and rubber or lead sheathed. Specifications". Defines construction, electrical and mechanical requirements, tests and marking for a range of shipboard/marine cables with rubber insulation and rubber or lead outer sheaths intended for shipboard, shore and floating installations.

Abstract

This standard specifies technical requirements (constructions, conductor classes, insulation and sheath types, dimensional limits), performance tests (insulation resistance, bending/cycling, hydrostatic/hermeticity, temperature and short-circuit endurance), environmental resistance (sea/fresh water, oils, sunlight) and service-life/marking rules for marine-rated rubber‑insulated cables used on ships, river craft and related marine installations. It also lists permitted cable marks and basic sortiment (KNR, KNRЭ, НРШМ, МРШН, СРМ, etc.).

General information

• Status: Original USSR GOST adopted by the State Committee for Standards; commonly referenced and implemented in procurement and product specifications (listed as active in public registries).
• Publication date: Approved by decree on 22 November 1976 (resolution No. 2610) and registered / effective from 1 January 1978.
• Publisher: State Committee for Standards of the Council of Ministers of the USSR (Gosstandart).
• ICS / categories: Marine and shipboard cables; ICS classification recorded as 29.060.20 (marine cables / power and control cables).
• Edition / version: Designation year -76 (first issue); includes multiple amendments issued after approval (amendments published in 1978–1988 as recorded in edition notes).
• Number of pages: 53 pages (typical commercial copies / registries list 53 pages).

Scope

Applies to shipboard cables with rubber insulation and rubber or lead sheaths intended for fixed installation and for connection to moving current receivers on sea-going ships (unlimited navigation area), river craft, shore and floating structures. Covers rated use up to typical shipboard voltages (examples in the standard include nominal voltages up to 400 V AC for many types and associated signal/control uses). The standard sets out mechanical, electrical and environmental endurance requirements needed for marine service.

Key topics and requirements

• Defined cable marks and sortiment (e.g., КНР, КНРЭ, КНРП, НРШМ, НГРШМ, МРШН and others) with permitted conductor counts and cross‑sections.
• Electrical insulation resistance requirement: finished cables ≥ 100 MΩ·km (measured at +20 °C, recalculated to 1 km).
• Hermeticity / hydrostatic resistance: radial hermeticity under external hydrostatic pressure (typical requirement up to 1.96 MPa; some specific types require higher rating up to 4.9 MPa).
• Mechanical endurance: detailed bending and cyclic-flex requirements (examples: specific cycle counts for various constructions — e.g., НРШМ ≥ 60 cycles for ≤7 cores, higher cycle counts for other marks; torsion/bend durability for small-section cores specified).
• Temperature and short‑circuit limits: normal conductor operating up to ~+65 °C; allowable short-circuit temperature excursions (short-time spikes, e.g., up to ~200 °C for limited durations) with limits on number of events.
• Environmental resistance: resistance to seawater and freshwater, oils and diesel fuel for prescribed exposure durations, and sunlight/weathering requirements for installed cable.
• Marking, constructional dimensional rules and required factory tests (type/acceptance tests and periodic sampling tests).

Typical use and users

Used by cable manufacturers, shipbuilders, marine electrical engineers, procurement and specification writers for navy and commercial ship outfitting, port/shore‑power system designers and maintenance teams responsible for shipboard electrical systems. The standard is frequently quoted in procurement documentation and tenders for marine cable supply.

Related standards

Related documents include other parts of the GOST 7866 series (for example GOST 7866.2-76 and GOST 7866.3-76 covering PVC-sheathed and other sheath/insulation variants), conductor material and class standards referenced within (for example GOST 22483-77 for conductor class/stranding) and various amendments and corrigenda attached to GOST 7866.1-76.

Keywords

GOST 7866.1-76; shipboard cable; marine cable; rubber insulated; lead sheathed; oil-resistant; hermetic; КНР; НРШМ; cable specifications; bending cycles; hydrostatic pressure; insulation resistance.

FAQ

Q: What is this standard?

A: GOST 7866.1-76 is a Soviet / Russian technical standard that specifies technical requirements and tests for shipboard cables with rubber insulation and rubber or lead sheaths used in marine and shore installations.

Q: What does it cover?

A: It covers cable construction (conductor, insulation, sheath), permitted marks and sizes, mechanical and electrical performance requirements (insulation resistance, bending/flexing endurance, hydrostatic/hermeticity), environmental resistance and factory/acceptance tests and marking.

Q: Who typically uses it?

A: Cable manufacturers, naval and commercial ship outfitters, marine electrical engineers, procurement/specification teams and maintenance crews for ships, ports and floating installations. It is commonly cited in purchase specifications and tenders.

Q: Is it current or superseded?

A: The standard was approved by decree on 22 November 1976 and registered / effective from 1 January 1978. Public registries and commercial standards collections continue to list GOST 7866.1-76 (and related parts of the 7866 series) as being in force or referenced in procurement; however, users should verify the current legal/regulatory status in the relevant national standards registry before relying on it for statutory compliance.

Q: Is it part of a series?

A: Yes — GOST 7866 is a multi-part series. Examples include GOST 7866.2-76 (rubber‑insulated with PVC sheath) and GOST 7866.3-76 (other insulation/sheath variants). Part numbering (.1,.2,.3, etc.) denotes different sheath/insulation families and detailed requirements for each family.

Q: What are the key keywords?

A: Shipboard cables; marine cables; rubber insulation; lead sheath; hermetic; bending cycles; insulation resistance; oil and seawater resistance; KNR; NRШM.