GB21521-2014
Minimum allowable values of energy efficiency and energy efficiency grades for copy machines, printers and fax machines
复印机、打印机和传真机能效限定值及能效等级
GB 21521-2014 is a current mandatory Chinese national standard for Minimum allowable values of energy efficiency and energy efficiency grades for copy machines, printers and fax machines. It appears in the Construction compliance cluster with a energy efficiency focus and has an implementation date of Jan 1, 2015.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to general-purpose copy machines, printers, fax machines, and multifunction devices (MFDs) operating under a 220V, 50Hz power supply with standard format sizes. It does not apply to products powered solely by data interfaces (e.g., USB, IEEE 1394), products with a Digital Front-End (DFE), products with an output speed of 70 pages/min or higher, or dot matrix printers with more than 48 pins. Manufacturers must ensure their standard-format office equipment complies with these energy efficiency requirements before entering the Chinese market.
Technical requirements
The standard classifies product energy efficiency into 3 grades, with Grade 1 being the highest. Products using technologies like thermal, dye-sublimation, electrophotographic, solid ink, thermal transfer, and high-performance inkjet are evaluated using the Typical Energy Consumption (TEC) method. The TEC limits vary based on whether the product is monochrome or color, and its output speed. Products using inkjet or dot matrix technology are evaluated using the Operation Mode Power (OM) method, which sets limits on operation mode power and standby power, including additional function power factors. The standard defines minimum allowable values of energy efficiency (Grade 3) which are mandatory for all products. It also specifies evaluating values of energy conservation (Grade 2) for energy-saving product certification. For inkjet and dot matrix products, there are also strict limits on the default delay time before entering sleep mode. Compliance with the Grade 3 minimum allowable values is a mandatory factory inspection item.
Testing methods
Testing involves measuring Typical Energy Consumption (TEC) according to Appendix A, which requires simulating daily usage patterns including active, ready, and sleep modes. For inkjet and dot matrix products, Operation Mode Power, standby power, and default delay time are tested according to Appendix B. The calculation methods for TEC and Operation Mode Power are detailed in Appendices C and D, respectively. Tests must be conducted under specific environmental conditions (temperature 23±5°C, humidity 10%-80%) and precise power supply parameters.
FAQs
What products are regulated under GB 21521-2014?
GB 21521-2014 regulates the energy efficiency of standard-format copy machines, printers, fax machines, and multifunction devices operating on 220V, 50Hz power. It excludes products powered only by data interfaces, those with a Digital Front-End (DFE), high-speed devices (≥70 ppm), and dot matrix printers with >48 pins.
Are there any updates from the previous version of GB 21521-2014?
Yes, GB 21521-2014 replaces GB 21521-2008 and GB 25956-2010. Key updates include a modified scope of application, higher energy efficiency requirements for all grades, removal of the 'target energy efficiency limit value', and revised additional function power factors.
How does GB 21521-2014 differ from ISO standards?
While GB 21521-2014 references international standards like ISO/IEC 28360:2012 for testing patterns, it establishes specific Chinese national energy efficiency grades and mandatory minimum allowable values tailored to the domestic market's regulatory framework.
The summary above provides a high-level overview of GB 21521-2014. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 21521-2014 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Management
- CCS
- F01
- ICS
- 27.010
- Competent department
- Standardization Administration of China
- Technical committee
- National Technical Committee on Energy Fundamentals and Management of Standardization Administration of China
Relationships
Replaces:GB 25956-2010, GB 21521-2008