IEC 61334-3-1:1998 pdf download.Distribution automation using distribution line carrier systems – Part 3-1: Mains signalling requirements – Frequency bands and output levels
1 Scope and object
This part of IEC 61 334 applies to electrical equipment to be used in distribution line carrier (DLC) systems on both medium-voltage (MV) and low-voltage (LV) distribution networks. It specifies the requirements (frequency bands, output levels, spurious emissions, etc.) for MV and LV distribution networks respectively. It specifies disturbance limits in the frequency range from 3 kHz up to 30 MHz. The upper frequency limit has been fixed at 30 MHz according to the CISPR recommendations for conducted disturbances. It does not specify the signal modulation methods nor the coding methods nor functional features. Environmental requirements and tests are not included. NOTE – In most countries the transmission is subject to regulation. Compliance with this standard does not imply permission to establish communication on a public supply network, between public supply networks and consumer installations, or between consumer installations where this would not otherwise be allowed. The object of this standard is to limit mutual influence between signal transmission equipment in electrical installations and between such equipment and other equipment. In addition, this standard is intended to limit interference caused by signal transmission equipment to sensitive electronic equipment. In some cases, interference caused by other electrical equipment may lead to misoperation of the mains signalling equipment. Guidance on proper use and warning of improper use are included in the installation and operating instructions supplied with each item of equipment. Where appropriate, a notice is attached securely to each product giving the substance of the following warning: Mains signalling must not be used to control equipment that could become a hazard to people or property if it inadvertently operates or fails to operate in any way.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 61 334. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 61 334 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
3 Definitions
For the purpose of this part of IEC 61 334, the following definitions apply.
For other terms used in this part but not defined below, refer to IEC 60050(1 61 ).
3.1 Frequency bands
3.1.1 signal frequency range
total band available for distribution line carrier use
3.1.2 basic frequency band
elementary subdivision of the signal frequency range or part thereof allocated to a single
power-line carrier (see IEC 60495 and IEC 60663) transmit or receive channel
3.1.3 nominal signal frequency band
frequency band in which a particular DLC transmitter or receiver operates
3.1.4 signal frequency band
frequency band which contains at least 99 % of the signal power
3.2 Nominal input-output impedance
3.2.1 nominal input-output impedance
value of impedance for which an input or output circuit has been designed and for which the
prescribed requirements apply
3.3 Signal output power
3.3.1 nominal signal output power
Peak Envelope Power (PEP) available within the nominal signal frequency band
The nominal signal output power must be compatible with the requirements for spurious
emissions.
The nominal signal output power is given below in dBm because the nominal input-output
impedance is well defined (see 5.3).
3.3.2 spurious emissions
emissions, at one or more frequencies, located outside the nominal signal frequency band
Spurious emissions comprise harmonics, parasitic signals and intermodulation products.
IEC 61334-3-1:1998 pdf download
