GB/T 25315-2017Home control systems -- Guidelines relating to safety (English PDF)

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);

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

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.

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

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.

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

considering functional safety questions and some electrical safety questions;

---Please refer to GB/T 14536.1-2008 for requirements of system components in

safety of home control system, and cyber security of communication through

open network, for example, mobile network or the Internet.

6 Conclusion and Suggestion

In terms of the integration of home control system, information technology equipment

and telecommunication technology, please refer to principles and unified terms in IEC

......