the main types of construction works and approximate quantities, Including but not limited to: (a) dismantling of: - an existing electrometer monophase - 20, - existing three-phase electric meter - 5, - an existing clock - 5, - single-phase circuit
breaker (automatic or load) - 30, - three-phase circuit breaker (automatic or load) - 5, - three-phase circuit breaker lv in a board - 1, - meter board and transport to cez warehouse - 5 pcs, - existing cable distribution cabinet (shc) and transportation to cez warehouse - 5; (b) installation of: - steel pillar up to h = 7.
Figure 2a shows the equivalent single-phase circuit
for the compensated system.
This single-phase circuit
is able to correct power factor in alternating current power network.
In addition, the device can accommodate 36 single-phase circuits
, 12 three-phase circuits, or any combination in between.
The circuits analysed are single-phase circuits
, but a three-phase converter can be easily obtained by joining three single-phase converters.
The goal was to evaluate meters that cost less than $1,000 for a three-phase circuit or three single-phase circuits.
However, power meters that monitor three single-phase circuits are available and are included in this study.
This is far more cost effective than running numerous single-phase circuits
because an entire data center rack can be powered with a single circuit, or two circuits for redundancy.