English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

Electrical power system: metering and measurement

2007-01-23 22:24:01 · 4 answers · asked by sunday a 1 in Environment

4 answers

2,112,556 kWh translates into 2,112,556,000 Wh so that means it is 2.1 gigawatts since giga=billion.

2007-01-23 22:33:35 · answer #1 · answered by quntmphys238 6 · 1 0

Fundas must be cleared before answering your question. Energy unit is KWH, Power unit is KW By definition KVA is only the product of ac voltsXamps divided by 1000. It indicates the maximun current(amps) that can be supplied by the Generator or a transformer. For example,a transformer can be fully loaded to its amps(KVA rating) while supllying ZERO power if the power factor is zero. KWH is the unit of energy.(1kwh=1 unit). If a machine takes the full amps at the rated voltage(like a capacitor for example) and it's power factor is Zero then the energy dissipated is zero,but the m/c has reached its max amp rating. The enegy meter disc will not rotate even though the ammeter and voltmeter show full reading! To explain to a layman I would like to mention an anology of pushing a wall with great force for a long time while the work done(energy expended) is zero as the displacement is nil. Ofcourse the power suppliers will not allow their transformers to go fully loaded (in amps) to lt's KVA rating while the energy bill for KWH remains low when the user pf is low. Leaving the domestic consumers, the HT consumers are billed with TWO part tarrif for a fixed KVA demand fee+ enegy cost per KWH used. A Max Demand KVA meter will record the MD and a heavy penalty/ disconnection may be awarded for exceeding the sanctioned demand.The max demand meter will record the MD only if the KVA demand stays long above a few minutes. This feature will permit the high starting current demands( less than 3 mts) of large power motors. The LT power consumers are required (by mandatory inspection by the power supply company) to maintain a high pf in the order of 0.95 by connecting recommended KVAReactive capacitors with their inductive loads. Hence no need for a new definition for KVAH or a new concept of KVAH meters!

2016-05-24 03:45:17 · answer #2 · answered by Anonymous · 0 0

The reading is kilowatt hours, 1000 watt hours. That is the standard unit of measure for home electricity use. A gigawatt is 1000 kilowatts.

2007-01-23 22:52:41 · answer #3 · answered by Anonymous · 0 0

Its kilowatt per hour

2007-01-23 22:33:44 · answer #4 · answered by kurt r 1 · 0 0

fedest.com, questions and answers