What is the purpose of CT metering?
A CT meter is a device that measures amperage in one or more conductors using sensors called current transformers (CTs). Current transformers come in many sizes and amperage ratings which allows a single meter to measure all kinds of electrical loads.
What is the metering system?
A Metering System is made up of items of Metering Equipment; voltage transformers, current transformers, Meters and Outstations, the wires and connections between each item and connections required to transfer metered data to the outside world (e.g. modems and communication lines).
What is an FPL substation?
A substation is where incoming high-voltage electricity from the transmission line is reduced — by step-down transformers — to a lower voltage suitable for distributing power via feeder lines. A feeder, or main power line, carries electricity from the substation to an FPL local/regional service area.
What is the purpose of primary metering?
1. Many large industrial/commercial customers request primary voltage for their service — utilizing their own transformers to step-down the voltage for their requirements. For these installations, the primary must be metered in order to bill the customer for their power consumption.
What is CT metering of electricity?
Current transformers are used extensively for measuring current and monitoring the operation of the power grid. Along with voltage leads, revenue-grade CTs drive the electrical utility’s watt-hour meter on many larger commercial and industrial supplies.
What is knee point voltage?
Knee point voltage is nothing but a magnitude of the saturation limit of the current transformer. As per IEC, the Knee Point Voltage of a Current Transformer is defined as the voltage at which 10 % increase in voltage of CT secondary results in 50 % increase in secondary current. …
How does the net metering work?
In net metering, the owner is billed for the “net” energy that is used, which is the difference between total energy produced by the system and total energy consumed. Net metering accounts the difference of excess power exported back to the grid and total power consumed by the owner.
Who is responsible for power line from pole to house FPL?
The customer/owner is responsible for installing, maintaining and repairing all equipment beyond theservice connection point except for the electric meter. If you receive overhead electric service, your electric system con- sists of the following: 1. Electric Lines that run from the utility pole to your residence.
What is a feeder in power system?
In addition Feeders are the power lines through which electricity is transmitted in power systems. Feeder transmits power from Generating station or substation to the distribution points. In power engineering, a feeder line is part of an electric distribution network, usually a radial circuit of intermediate voltage.
What are primary meters?
Primary Meter. Primary meters are installed if commercial customers elect to have power delivered at distribution voltages such as 12.5 kV. Residential customers are generally billed for kilowatt hours (kWH) used. Commercial and industrial customers may additionally be billed for demand charges and power factor charges …
What is primary high voltage metering?
In primary metering, the metering is installed on the high voltage lines. Some common voltages for distribution lines are 12,470v and 24 kv. Since primary metering installs its equipment on the primary, the metering equipment is rated for this higher voltage.