Demand Metering Concepts - Instant Video
This 33-minute video discusses the need for demand metering and basic demand metering concepts. Examples of power demand by various types of customers are shown. Mechanical, thermal, and solid-state types of demand registers are examined and the principles of demand registration for each type are explained.
The Demand Concept – 6 minutes
Explains why demand is metered. Defines demand. Identifies three common types of demand registers.
Demand Metering Methods – 10 minutes
Explains the block interval method of metering demand. Explains the lagged method of metering demand.
Describes a mechanical sweep pointer demand register. Identifies the main components of a mechanical sweep pointer demand register and briefly describes their operation.
Mechanical Demand Registers, Part 2 – 6 minutes
Describes the parts and operation of a mechanical dial readout indicating register and a cumulative demand register.
Electronic Demand Registers – 6 minutes
Describes the basic operation of an electronic demand register. Explains how pulses can be generated to operate an electronic demand register. Describes features that can be programmed in a typical electronic demand register.