what is a tod meter ? what is the electrical circuit and construction for that? how it works?

Question

I know that it is used for electrical energy measurement and used for electrical billing.

Answer 1

TOD meter = Time-Of-Day meter

WHAT IS TIME-OF-DAY METERING?

Time-of-day metering is a rate option that is offered by many utilities. When elected by the customer, a meter that records demand, time, and energy usage is installed in place of the existing electrical meter. The metering option benefits utility companies by decreasing the required capacity. The metering option benefits customers by providing reduced demand and usage rates during off-peak times, which gives customers a chance to reduce their utility bill.

HOW DOES TIME-OF-DAY METERING WORK?

At a given time a utility company has a certain capacity of energy available to its customers. A utility must be prepared to meet the demands placed on the grid by the consumers. During on-peak hours, demands are typically highest because of manufacturing loads, office loads, air conditioning loads and etc. The on-peak hours usually vary from around 9:00 a.m. - 6:00 p.m. Monday through Friday. During this on-peak period, utility companies must have enough capacity on-hand to meet the loads placed on them by their customers. Having this on-hand capacity creates additional expenses for the utility. To lessen the required capacity, the utility often offers incentives to customers that are willing to shift or move a portion of their demand to off-peak hours.

Unfortunately, except for knowing there's a time-recognition portion to the regular power consumption meter, I can't help you with the circuitry.

Answer 2

Tod Meter

Answer 3

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In concept this is very simple. I have never designed a time of day meter, but I believe I could do it. I am afraid the effort is just too much to do this to answer a question, however. A schematic could probably only be obtained from a manufacturer of such meters and they will never release it to the public as they do not want to make it easy for someone to copy their design. Basically a time of day meter records the energy used during various time frames and each time frame can be billed at its own rate.