IEC 62552-3:20 15规定了通过内部自然对流或强制空气循环冷却的家用和类似制冷器具的基本特性，并建立了检查这些特性的测试方法。 IEC 62552的这一部分描述了确定能耗特性的方法，并定义了如何将这些特性组合起来以估计不同使用和气候条件下的能耗。IEC 62552的这一部分还定义了体积的测定。 -标准的所有部分都进行了大量重写和更新，以应对新的测试要求、新的产品配置、电子产品控制和基于计算机的测试室数据收集和处理设备的出现。 -为了更有效地分析和更好地表征不同操作条件下的关键产品特性，第3部分（本部分）中许多能量测试的测试数据现在被分成几个部分（如作为稳态操作以及除霜和恢复）。确定能源消耗的方法已经完全修订，现在包括许多内部检查，以确保符合标准要求的数据尽可能准确和高质量。 -第3部分（本部分）现在提供了一种量化每个相关能量成分的方法，以及如何将这些成分组合起来以估计不同条件下的能量的方法，期望不同地区在使用单一组全局测试测量时选择最适用的成分和权重，同时设置其本地性能和能量效率标准。 -对于第3部分（本部分）中的能耗测量，任何隔室中不包括热质量（测试包），并且隔室温度基于空气温度传感器的平均值（与最热测试包中的温度相比）。温度传感器在未冷冻隔室中的位置也有显著差异。 -第3部分（本部分）中的能耗测试现在有两个指定的环境温度（16°C和32°C）。 -第3部分（本部分）增加了负载处理能效测试。 -增加了储酒器具的测试（性能（第2部分）和能量（第3部分（本部分））。

IEC 62552-3:2015 specifies the essential characteristics of household and similar refrigerating appliances cooled by internal natural convection or forced air circulation, and establishes test methods for checking these characteristics. This part of IEC 62552 describes the methods for the determination of energy consumption characteristics and defines how these can be assembled to estimate energy consumption under different usage and climate conditions. This part of IEC 62552 also defines the determination of volume.
- All parts of the standard have been largely rewritten and updated to cope with new testing requirements, new product configurations, the advent of electronic product controls and computer based test-room data collection and processing equipment.
- For more efficient analysis and to better characterise the key product characteristics under different operating conditions, the test data from many of the energy tests in Part 3 (this part) is now split into components (such as steady state operation and defrost and recovery). The approach to determination of energy consumption has been completely revised, with many internal checks now included to ensure that data complying with the requirements of the standard is as accurate as possible and of high quality.
- Part 3 (this part) now provides a method to quantify each of the relevant energy components and approaches on how these can be combined to estimate energy under different conditions on the expectation that different regions will select components and weightings that are most applicable when setting both their local performance and energy efficiency criteria while using a single set of global test measurements.
- For energy consumption measurements in Part 3 (this part), no thermal mass (test packages) is included in any compartment and compartment temperatures are based on the average of air temperature sensors (compared to the temperature in the warmest test package). There are also significant differences in the position of temperature sensors in unfrozen compartments.
- The energy consumption test in Part 3 (this part) now has two specified ambient temperatures (16°C and 32°C).
- A load processing energy efficiency test has been added in Part 3 (this part).
- Tests (both performance (Part 2) and energy (Part 3 (this part)) have been added for wine storage appliances.