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BS 7647:1993

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Specification for radio teleswitches for tariff and load control
Available format(s)

Hardcopy , PDF

Withdrawn date

31-08-2015

Language(s)

English

Published date

15-10-1993

Committees responsible
Foreword
Specification
Introduction
1. Scope
2. References
3. Definitions
4. Electrical values
5. Mechanical properties
6. Climatic conditions
7. Electrical properties
8. Signal reception, signal decoding and control of
     output switches
9. Electromagnetic compatibility (EMC)
10. Tests and test conditions
Annexes
A. (normative) Signal modulation and data format
B. (normative) Specification for optically isolated
     diagnostic data
Tables
1. Dimensions and spacing of fixing holes and
     terminals
2. Switch breaking current
3. Temperature range
4. Relative humidity
5. A.C. voltage tests
Figures
1. Dimensions and spacing of terminals
2. The two aerial positions for directional aerials
3. Relationship between ambient air temperature and
     relative humidity
4. Message format
5. Switching sequence
6. Electromagnet for testing the influence of
     externally produced magnetic fields
A.1 Phasor diagram of carrier modulated by data
A.2 Phase of modulated carrier as a function of time
A.3 Amplitude response of the specified transmitter
     or receiver data-shaping filter
A.4 Amplitude response of the combined transmitter and
     receiver data-shaping filter
A.5 Spectrum of biphase coded low frequency (LF) radio-
     data signal
A.6 Time-function of a single biphase symbol
A.7 Eye pattern at the output of the specified receiver
     data-shaping filter
A.8 Structure for LF radio-data blocks
A.9 Arrangement of blocks in a multiblock, relative to
     clock-time
A.10 Clock-time blocks (type 0)
B.1 Diagnostic wand
List of references

Specifies requirements and type tests for radio teleswitches used for the remote switching of up to four circuits (such as the control of two tariff circuits and a water and space heating circuit).

Committee
PEL/13
DevelopmentNote
Supersedes 92/30694 DC (10/2005) Reviewed and confirmed by BSI, January 2010. (12/2009)
DocumentType
Standard
Pages
34
PublisherName
British Standards Institution
Status
Withdrawn
Supersedes

BS 7951:2000 Electricity meters. Alternating-current single-phase static watt-hour telemeters of accuracy class 1 or 2
13/30281948 DC : 0 BS 7856 - CODE OF PRACTICE FOR SPECIAL DESIGN AND OTHER FEATURES OF ALTERNATING CURRENT WATTHOUR METERS FOR ACTIVE ENERGY (MID ACCURACY CLASSES A AND B) FOR USE IN THE UK
BS 7856:2013 Code of practice for special design and other features of alternating current watthour meters for active energy (MID accuracy classes A and B) for use in the UK

BS 7003:1988 Specification for spring-operated impact-test apparatus and its calibration
BS 7400(1991) : 1991 AMD 7672 SPECIFICATION FOR ALTERNATING CURRENT STATIC WATT-HOUR METERS FOR ACTIVE ENERGY (CLASSES 1 AND 2)
IEC 60801-4:1988 Electromagnetic compatibility for industrial-process measurement and control equipment - Part 4: Electrical fast transient/burst requirements
BS 6667-3:1985 Electromagnetic compatibility for industrial-process measurement and control equipment Method of evaluating susceptibility to radiated electromagnetic energy
BS 7527-3.3(1991) : 1991 AMD 7931 CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - STATIONARY USE AT WEATHERPROTECTED LOCATIONS
BS 142-1.4.1:1990 Electrical protection relays. Information and requirements for all protection relays. Specification for electrical disturbance tests 1 MHz burst disturbance tests
BS 6458-2.1:1984 Fire hazard testing for electrotechnical products. Test methods Glow-wire test
BS 6667-2:1985 Electromagnetic compatibility for industrial-process measurement and control equipment. Method of evaluating susceptibility to electrostatic discharge
PD 6499:1981 Guide to insulation co-ordination within low-voltage systems including clearances and creepage distances for equipment

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