Second-tier metering for smaller industrial and commercial consumers

With the English and Welsh electricity supply monopoly due to be removed on all sites down to 100 kW demand from April 1994, it is increasingly important that cost-effective metering and processing systems are available to handle this half-hour data if competitive suppliers are not to be handicapped. The author therefore adopts the recording of half-hour kW demand data as a basic metering requirement for above-100 kW second-tier supplies. The author discusses the basic metering requirements, monthly communications, daily remote communications and the benefits of remote communications. The design of a polyphase meter with integral demand recording is discussed