Beside designing and manufacturing customised stabilizers tailored on the Customer’s requirements, ORTEA developed product series particularly thought and optimised for specific necessities and/or applications.
|Number of phases||1||3||3-1|
|Output voltage*||220-230-240V (L-N)||380-400-415V (L-L)||380-400-415V (L-L) input
220-230-240V (L-N) output
|Nominal rating||from 5kVA to 80kVA|
|Input voltage range||±15% - ±20% - ±25% - ±30% - +15%/-25% - +15%/-35% - +15%/-45%|
|Output voltage range||±0.5%|
|Frequency||50 ±5% or 60Hz ±5%|
|Admitted load variation||Up to 100%|
|Admitted load imbalance||n.a.||100%||n.a.|
|Cooling||Natural air ventilation (air extraction over 35°C)|
|Max relative humidity||95% (non condensing)|
|Admitted overload||200% 2 min.|
|Harmonic distortion||None introduced|
|Protection degree||IP 54|
|Overvoltage protection||Class II surge arrestor|
The acronym BTS stands for Base Transceiver Station and is used to indicate all the transmitting and receiving devices that enable the radio coverage in a telecom cell.
This is deﬁnitely an application where high quality voltage supply, regardless of the incoming ﬂuctuation, is very often the key for ensuring efﬁciency and reliability, fundamental qualities to guarantee operating continuity.
Disrupted service, loss of data, security failure, inaccurate information and general inconvenience are examples of possible problems caused by unstable supply. Of course, all this results in increased costs. A voltage stabilizer is a device able to respond to changes in the voltage level on the input line caused by sags (due to undersized distribution lines, connection of large loads to the network, ground faults, etc.) and surges (generated by disconnection of large loads, increased voltage at the generating plant, atmospheric events, etc.) The duration of such phenomena depends on their cause and is not easily predictable. Sags are generally more common especially where the distribution is not efﬁcient.
The voltage stabilizer speciﬁcally designed for BTS sites has proved to be an efﬁcient solution in the telecommunication ﬁeld.
In comparison to a standard voltage stabilizer, a BTS unit offers the following characteristics:
The stabilizers can be single-phase, three-phase or speciﬁcally designed for receiving a three-phase input and releasing a single-phase output. With the three-phase conﬁguration, the regulation is performed independent on each phase and the voltage stabilizer requires the neutral wire presence for a correct operation. If the neutral wire is not available, the addition of a D/Y isolating transformer or neutral-point reactor is required.
Three-phase stabilizers can be used with three-phase loads and up to 100% unbalanced single-phase loads, even in case of asymmetric mains.
The instrumentation is installed on the cabinet door. An output digital multimetre provides with information on the line downstream the voltage stabilizer (phase and linked voltages, current, power factor, active power, apparent power, reactive power, etc).
Minimum voltage, maximum voltage, internal overheating and overload on the voltage regulator are signalled by an acoustic alarm.
The stabilizer exploits a microprocessor-based control logic.
|Lybra||Single-phase||Vega/Antares + advanced protection package||0.3-135kVA|
|Aries||Three-phase||Orion + advanced protection package||2-250 kVA|
|Aries Plus||Three-phase||Orion Plus + advanced protection package||30-1250 kVA|
|Discovery||Three-phase||Sirius + advanced protection package||60-6000 kVA|
ORTEA product range is completed by a range of line conditioners based on voltage stabilisers and provided with additional protective devices.
The following sketch shows the typical line conditioners:
The acronym DVB stands for Digital Video Broadcasting and is used to indicate all the devices transmitting and receiving digital signal. The availability of high quality voltage supply is the key for ensuring operating continuity.
The BC series is speciﬁcally designed for DVB stations and consists of a digital voltage stabilizer able to compensate for voltage variation on the input line generated by sags or surges, completed by additional devices for the protection against transients and electric noise generated by electronic appliances.
Usually, a BC stabilizer includes
For outdoor installation, the unit is housed in side an IP54 metallic enclosure.
Small ratings can be assembled in enclosures suitable for installation in 19” rack cabinets.
AOTs (wave absorbers) are obtained by assembling in a cabinet a combination of protective devices to deal with transients carried by the distributing lines.
In order to achieve the most complete protection level, the AOT combines two complementary concepts: smoothing and ﬁltering.
The task is performed through surge arrestors, isolating transformers, detuning reactors and capacitors.
AOTs must be installed upstream and in series to the equipment that needs protection in order to avoid inductive and /or capacitive effects on the lines.
Usually, AOTs include:
The operation can be divided in three phases:
All ORTEA voltage stabilizers can be assembled in cabinets speciﬁcally designed for outdoor installation.
The standard outdoor cabinets are built for an IP54 protection degree and are painted with powder paint for C3 anti-corrosion class (C4 on request).
On request, ORTEA is also able to provide with units destined to be installed in particularly aggressive environments (for example, AISI304 and AISI316 stainless steel cabinets).
Speciﬁcally designed for food & beverage, packaging and bottling industries, these voltage stabilizers are housed in an IP54 cabinet cooled via air conditioning units.
The stabilizer is therefore protected against dust or other volatile substances and liquid sprays.
The conﬁguration includes raised feet, so that normal cleaning routines can be performed underneath the stabilizer.
On request, the cabinet can be in stainless steel.