ISO 6521-3:2019 PDF

Name: ISO 6521-3:2019 — Lubricants, industrial oils and related products (Class L) — Family D (compressors) — Part 3: Specifications of categories DRA, DRB, DRC, DRD, DRE, DRF and DRG (lubricants for refrigerating compressors)
SKU: ISO 6521-3:2019
Price: 25 EUR
Availability: InStock

Lubricants, industrial oils and related products (Class L) — Family D (compressors) — Part 3: Specifications of categories DRA, DRB, DRC, DRD, DRE, DRF and DRG (lubricants for refrigerating compressors)

Название (английский):

ISO 6521-3:2019

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 13
Дата публикации:: 1 октября 2019 г.
Издание:: ISO IS 6521 edition 1 version 1
ICS:: 75.100

Тип поставки:

Full version195 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:3 раб. дн. (перевод)

Цена:195 €

Описание (английский):

This document specifies the minimum requirements for mineral or synthetic based lubricants intended for use in all types of refrigerating compressors. NOTE This document can be read in conjunction with ISO 6743-3.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 6521-3:2019 specifies minimum requirements for lubricants for refrigerating compressors (Family D, Class L). It defines categories DRA, DRB, DRC, DRD, DRE, DRF and DRG and covers mineral- and synthetic-based oils intended for all types of refrigerating compressors. The standard focuses on oil/refrigerant interaction - including miscibility, solubility, thermal and chemical compatibility, and practical handling such as sampling and water content control. ISO 6521-3 is intended to be read alongside ISO 6743-3 (classification of compressor lubricants).

Key topics and technical requirements

Categories and fluid types: Defines seven refrigerating compressor oil categories (DRA–DRG) by miscibility with specific refrigerant families (e.g., ammonia R717, HFCs, CFC/HCFC, CO2, hydrocarbons). Typical base fluids listed include highly refined mineral oils, polyalphaolefins (PAO), polyol esters, polyalkylene glycols (PAGs) and polyvinyl ethers.

Compatibility with refrigerant: Oils must not chemically react under compressor temperatures and must meet compatibility requirements for the specific refrigerant.

Miscibility and solubility: Standards require that oils exhibit appropriate miscibility at evaporator temperatures (to avoid phase separation and trapped oil) and maintain adequate viscosity under compressor pressure/temperature (VPT or Daniel plots).

Water content and handling: Maximum water limits for fresh oils are specified by oil chemistry (PAGs are more hygroscopic than esters or hydrocarbons). Gas-tight packaging and vacuum drying/degassing before compressor fill are emphasized.

Sampling and testing: Sampling per ISO 3170 and a suite of test methods are referenced (e.g., ISO 3104 for kinematic viscosity, ISO 2592/2719 for flash points, ISO 6296/Karl Fischer methods for water, ISO 6245 ash, DIN 51538 ammonia resistance).

Specification tables: Detailed property tables (Annex A) give viscosity grades (ISO 3448) and other required parameters for each ISO-L-DR category.

Applications and who uses this standard

Refrigeration and HVAC-R engineers specifying compressor lubricants.

Compressor manufacturers to set lubricant compatibility and performance requirements.

Lubricant manufacturers and suppliers for product classification and formulation guidance.

Procurement/specification writers and maintenance teams ensuring correct oil selection for systems using ammonia, HFCs, CO2, hydrocarbons or legacy CFC/HCFC refrigerants.

Testing labs performing VPT, miscibility, water content and compatibility tests.

Keywords: ISO 6521-3:2019, refrigerating compressor oils, compressor lubricant specifications, oil-refrigerant miscibility, VPT diagram, polyol esters, polyalkylene glycols, ISO 6743-3.

ISO 6521-3:2019 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and who uses this standard

Related standards

Технические детали

SIST ISO 6743-3:2006

Lubricants, industrial oils and related products (class L) -- Classification -- Part 3: Family D (Compressors)

ISO 31700-1:2023

Consumer protection — Privacy by design for consumer goods and services — Part 1: High-level requirements

SIST EN ISO 3104:2024

Petroleum products - Transparent and opaque liquids - Determination of kinematic viscosity and calculation of…

BS ISO 6296:2000

Methods of test for petroleum and its products. Petroleum product. Determination of water. Potentiometric Kar…

SIST EN ISO 6245:2003

Petroleum products - Determination of ash (ISO 6245:2001)

ISO 3448:1975

Industrial liquid lubricants — ISO viscosity classification

BS EN ISO 2592:2017

Petroleum and related products. Determination of flash and fire points. Cleveland open cup method.