GB/T 25315-2017 English PDF (GBT25315-2017)

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GB/T 25315-2017: Home control systems -- Guidelines relating to safety
GB/T 25315-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 33.040.40
L 78
Replacing GB/T 25315-2010
Home Control Systems - Guidelines Relating to Safety
(IEC Guide 110.2014, MOD)
ISSUED ON. DECEMBER 29, 2017
IMPLEMENTED ON. JULY 1, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China;
Standardization Administration Committee of the People’s
Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative References ... 5 
3 Terms and Definitions ... 6 
4 Home Control System ... 6 
5 Safety Requirements ... 10 
6 Conclusion and Suggestion ... 13 
References ... 15 
Foreword
This Standard is drafted in accordance with stipulations in GB/T 1.1-2009.
This Standard is drafted as a replacement of GB/T 25315-2010 Home Control Systems
- Guidelines Relating to Safety. In comparison with GB/T 25315-2010, apart from
editorial modifications, this Standard has the following main technological changes as
follows.
---Application examples are newly added and adjusted (refer to Chapter 4 in
Version 2010);
---The title of 5.1 is modified to “General Rules”; “electrical safety” is adjusted to
“equipment safety”; consideration of cyber security is newly added (refer to 5.1
in Version 2010);
---Dangerous situations of reserving application are modified (refer to 5.2 in
Version 2010);
---Restart after failure (refer to 5.3.2), full life cycle safety (refer to 5.3.3),
reasonable foreseeable misuse (refer to 5.3.4), contact current accumulation
(refer to 5.3.5) and communication (refer to 5.3.6) are newly added;
---Relevant product fields that might be involved are modified (refer to Chapter 6
in Version 2010).
This Standard is redrafted in accordance with IEC Guide 110.2014 Home Control
Systems - Guidelines Relating to Safety.
The technological differences between this Standard and IEC Guide 110.2014, and
the causes for these differences are listed below.
---In terms of scope, this Standard makes adjustment that brings technological
differences to comply with the specific stipulation of scope in GB/T 1.1-2009;
---In terms of normative references, this Standard makes adjustment that brings
technological differences to comply with the technological conditions of China.
The adjustment is concentratedly reflected in Chapter 2 “Normative
References”. Please see the specific adjustment below.
 GB 4943.1-2011, which is modified in accordance with international standards,
is adopted as a replacement of IEC 60950-1.2005 (refer to 5.3.5);
 ISO/IEC Guide 51, which is not mentioned in the Standard, is deleted;
 Reference IEC 62368-1 is adjusted to normative reference (refer to 5.3.5);
Home Control Systems - Guidelines Relating to Safety
1 Scope
This Standard provides safety-related information of home control systems for signal
transmission through low-voltage or extra-low voltage building wiring (through wired or
wireless mode) for household purposes or places with similar purposes. This Standard
stipulates safety requirements that shall be considered in equipment that constitutes
home control systems, including relevant functional safety and regular safety
requirements.
This Standard is applicable to home control systems that are adopted in the
interconnection of information technology equipment. Home control systems are
merely limited to single residences or commercial places with a similar level of
complexity.
Home control systems, which are involved in this Standard, provide communication
and operation of household equipment (such as control, cooling, heating, illumination,
audio/video, communication and safety of equipment); household gateway between
internal home control system and external wide area network (for example, the
Internet).
Please refer to IEC Guide 107 for stipulations regarding electromagnetic compatibility.
This aspect of content is not included in this Standard.
2 Normative References
The following documents are indispensable to the application of this Standard. In terms
of references with a specified date, only versions with a specified date are applicable
to this Standard. The latest version (including all the modifications) of references
without a specified date is also applicable to this Standard.
GB 4943.1-2011 Information Technology Equipment - Safety - Part 1. General
Requirements (IEC 60950-1.2005, MOD)
IEC 62368-1 Audio/Video, Information and Communication Technology
Equipment - Part 1. Safety Equipment
EN 50491-3 General Requirements for Home and Building Electronic Systems
(HBES) and Building Automation and Control Systems (BACS) - Part 3. Electrical
Safety Requirements
---Fire alarm;
---Window-shades control;
---Garage door remote control switch;
---Different forms of safety control (audio/video).
When several application equipment can be interconnected through home control
network (wired or wireless), a system that is thus generated shall be deemed as a
home control system.
Home control system can be established on different transmission medium (such as
power line, twisted pair, infrared or radio), and interconnected with other external
network (such as telephone network and wired TV network).
Generally speaking, a home control system will be assembled to cover certain
fundamental application, such as illumination, heating and ventilation control. It can
include equipment from different manufacturers. Under most circumstances,
equipment shall comply with different product standards.
Furthermore, this system will probably be expanded to include more application
functions in the future. Under most circumstances, these expansions will not be
completed by previous system installers.
In a regular electrical installation system, each function needs to be equipped with its
own cable; each control system is an independent network. On the contrary, a home
control system can adopt a shared line to complete the induction, conversion, control,
monitoring and signal transmission of all the functions and programs. Equipment can
be directly connected to power or receive power supply through the network.
Home control system includes inter-equipment signal transmission network that is
connected to home network. Equipment is connected through interfaces. Interfaces
can be integrated in equipment. All the equipment that is connected with the home
control system can be managed through a center manager. Communication among
equipment can also be implemented directly without the center manager.
The size of family control system varies. It can be constituted of several types of
equipment, or several hundred types of equipment.
In home control system, home network can adopt several topological structures listed
in Figure 1 below, or a combination of these topologies.
might trigger dangers, limitation of contact current from telecommunication network
and overheating protection of telecommunication network, etc.
Furthermore, several other questions shall also be considered. Standards that provide
specific stipulations of these questions include, but are not limited to.
---Please refer to GB/T 20438 series standard for functional safety questions;
---When equipment or system is connected with network, please refer to EN
50491-3 for certain specific safety requirements;
---Please refer to EN 50491-4-1 for specific stipulations of simultaneously
considerin...