Alstomenergysystems

We will see how to build two Sidereal Pointers in the following sections. The first is a simple instrument, made of cardboard, wood and plastic (figure 4), while the second is built of more substantial metal, thus more precise and lasting , but also more difficult to fabricate. Before we start, this article was originally written in Italian so all of the measurements are done in the Metric system. As such, equivalent inch dimensional stock can be used without any problems.

A Sidereal Pointer (figure 4) is made by 2 disks that are held 90° relative to each other. The first one carries the Right Ascension scale, and the second the Declination scale. In order for the instrument to work correctly, the R.A. disk has to be parallel to the equatorial plane. In this way, its axis is parallel to the Earth’s axis of rotation and, as such, it’s axis points toward the Pole Star . (continue reading…)

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In certain respects, the astronomical coordinate system (figure 2) is similar to the Earth’s coordinate system. Like it, it is formed by meridians and parallels. The two systems have in common the polar axis. In fact, the apparent rotation of the celestial vault is due to the rotation of the Earth itself. The Earth’s axis points approximately toward the Pole Star, hence the celestial vault spins around that same star. By the defined virtue of the coincidence of the terrestrial axis with the celestial one, the equatorial plane of the Earth and sky also approximately coincide. Like the terrestrial ones, the celestial latitude goes from 0° (at the equator) to +90° (North celestial Pole) and -90° (South celestial Pole). (continue reading…)

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In recent years, turbomachinery research has focused on investigations of unsteady flow phenomena, including secondary flows or rotor-stator interactions. On the one hand, CFD methods are being developed and applied to study these phenomena. On the other hand, modern measurement techniques are also under intense development to accurately measure time varying phenomena. The research focus of the instrumentation group at LEC is both the development of new measurement techniques and the further development of existing measurement techniques for their application in harsh turbomachinery environments. One aspect of this work is hardware design, for example, sensor design and packaging solutions. (continue reading…)

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The range of temperatures, pressures, and electromagnetic fields in natural or laboratory plasmas (=ionized gases) covers many orders of magnitude, from the case of large astronomic systems, to lightnings, tokamaks or displays. The governing physics is basically unsteady fluid dynamics coupled with electromagnetic fields. In the last few decades the interest in plasmas has matured from a qualitative scientific attraction to quantitative technical solutions in a number of applications. (continue reading…)

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Glob Mon system is intended for global monitoring of equipments delivered by ELTECO-UPS Company. Basic communication basis is SNMP protocol. System allows monitoring of gen sets, intelligent supply distribution systems, UPS backup supplies, DC supply systems, PDU, precision cooling systems, extinguishment, security and protection systems.

System is conceived as multilayer communication program, allowing complete preview of customers complex infrastructure topology. (continue reading…)

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110V DC backed-up supplies are used mostly in power engineering; additionally they can be used for emergency lighting or other applications. These supplies are always custom-made according to user’s wishes. We design and make configuration which comes from these main requirements:

* Output of rectifier (charger)
* Requirement on redundancy of rectifier
* Prepare supply for eventual output upgrade in the future
* Maximal and average current to load
* Back-up time upon given output or required capacity of battery
* Positioning of battery (on rack / in supply)
* Automatic disconnection of batteries if discharged
* For emergency lighting: If disconnection of outputs is required while supply network is available
* Protection of output voltage on more circuits (continue reading…)

220V DC backed-up supplies are used mostly in power engineering; additionally they can be used for emergency lighting or other applications. These supplies are always custom-made according to user’s wishes. We design and make configuration which comes from these main requirements:

* Output of rectifier (charger)
* Requirement on redundancy of rectifier
* Prepare supply for eventual output upgrade in the future
* Maximal and average current to load (continue reading…)

Everywhere where you require power supply of equipments with DC power and in voltage failure cases you can use wide choice of offered DC backed up supplies. We offer supplies with output voltage 12-220 VDC in power range 0.3-2000 A. Our offer is consists of serial manufactured products whose epitomes can be found in enclosed catalogue lists. We deliver also custom-made supplies according to users requirements.

DC Supplies usually have possibility of parallel redundant connection of power parts and by this is simply achieved higher power output and better reliability. (continue reading…)

ELTECO-UPS Company will ensure complete line of gen sets in output range from 2 kVA to 4.0 MVA in below-mentioned configuration :

* With JOHN DEERE, DEUTZ, PERKINS, VOLVO-PENTA, LISTER PETTER, CUMMINS, PERKINS, MTU, RUGGERINI, HONDA, YANMAR engines
* With Leroy Somer, Stamford Newage, Mecc Alte alternators
* Canopied versions with Silent a Super Silent canopy (indoor and outdoor configuration), container versions
* In mobile or in stationary configuration
* With manual operation or with fully automatic operation
* In PRIME mode, STAND-BY mode or paralel mode with synchronization with mains
* With power ATS panel or special switch board
* Communications and remote/local monitoring (continue reading…)

Charge controllers are an electronic device to control the charging of batteries. They are needed for all large battery installations to optimise charging rates and protect the battery.
They are capable of automatically doing most of the maintenance charging and conditioning charging required to ensure maximum battery life. Charge controllers are available in sizes capable of handling from 2 amps up to 60 amps. Additional units can be installed to handle larger currents.
Charge controllers are equipped with ’smart’ features and can give an indication of the battery status, charge rate and power usage.

Key benefits of charge controllers for alternative power (continue reading…)