OPTIMISERS POWER QUALITY

STATIC DIGITAL VOLTAGE STABILISERS DVS

SPECIAL DIGITAL VOLTAGE STABILISERS DVS

Ortea
Manufactured by: Ortea
Model: Vega
Product ID: 1022
single-phase
0.3-25kVA
digital electromechanical voltage stabilisers vega
Standard features
Selectable output voltage (dip-switch)*220-230-240V
Frequency50/60Hz ±5%
Admitted load variationUp to 100%
CoolingNatural ventilation
Ambient temperature-25/+45°C
Storage temperature-25/+60°C
Max relative humidity95%
Admitted overload200% 2min
Harmonic distortionNone introduced
ColourRAL 7035
Protection degreeIP 21
InstrumentationOutput digital voltmeter
InstallationIndoor

* The output voltage can be adjusted by choosing one of the indicated values.
Such choice sets the new nominal value as a reference for all the stabiliser parameters.

Vega stabilisers are available for different ranges of input voltage fluctuation.

Standard models offer a double input connection so that with the same unit two different input variations (±15/±20% or ±25/±30%) can be dealt with.

An automatic circuit breaker is mounted on the regulation circuit to protect against overload and short circuit on the voltage regulator, whilst the auxiliary circuit is protected by fuses.

A digital display on the front panel shows the output voltage and the alarms (min/max output voltage, gearmotor lock, internal overheating, regulator overload).

The control logic is based on a digital microprocessor.

All Vega stabilisers are fitted with the same control card, thus simplifying maintenance operations and spare parts storage.

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Ortea
Manufactured by: Ortea
Model: Antares
Product ID: 1025
single-phase
15-135kVA
digital electromechanical voltage stabilisers-antares
Standard features
Selectable output voltage (dip-switch)*220-230-240V
Frequency50/60Hz ±5%
Admitted load variationUp to 100%
CoolingNatural air ventilation (aided with fans)
Ambient temperature-25/+45°C
Storage temperature-25/+60°C
Max relative humidity95%
Admitted overload200% 2min
Harmonic distortionNone introduced
ColourRAL 7035
Protection degreeIP 21
InstrumentationOutput digital multimetre
InstallationIndoor
Overvoltage protectionClass II output surge arrestor

* The output voltage can be adjusted by choosing one of the indicated values.
Such choice sets the new nominal value as a reference for all the stabiliser parameters.

Antares stabilisers are available for different ranges of input voltage fluctuation.

Standard models offer a double input connection so that with the same unit two different input variations (±1 5%/±20% or ±25%/±30%) can be dealt with/.v

An automatic circuit breaker is provided on the regulation circuit to protect against overload and short circuit on the voltage regulator whilst the auxiliary circuit is protected by fuses.

The instrumentation consists of a digital multimetre installed on the cabinet front panel. The alarms (min/max output voltage, gearmotor lock, internal overheating, regulator overload) are recognizable by means of LEDs on the control card.

The control logic is based on a digital microprocessor.

All Antares stabilisers are fitted with the same control card, thus simplifying maintenance operations and spare parts storage.

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Ortea
Manufactured by: Ortea
Model: Orion
Product ID: 1030
three-phase
2-250kVA
digital electromechanical voltage stabilisers orion
Standard features
Voltage stabilisationIndependent phase control
Selectable output voltage (dip-switch)*220-230-240V (L-N) / 380-400-415V (L-L)
Frequency50/60Hz ±5%
Admitted load variationUp to 100%
Admitted load imbalance100%
CoolingNatural air ventilation up to 45kVA ±15%
Aided with fans from 60kVA ±15%
Ambient temperature-25/+45°C
Storage temperature-25/+60°C
Max relative humidity95%
Admitted overload200% 2min
Harmonic distortionNone introduced
ColourRAL 7035
Protection degreeIP 21
InstrumentationOutput digital multimetre
InstallationIndoor
Overvoltage protectionClass II output surge arrestor (from 60kVA ±15%)

* The output voltage can be adjusted by choosing one of the indicated values.
Such choice sets the new nominal value as a reference for all the stabiliser parameters.

Orion stabilisers are available for different ranges of input voltage fluctuation.

Standard models offer a double input connection so that with the same unit two different input variations (±1 5%/±20% or ±25%/±30%) can be dealt with.

The output voltage regulation is performed independently on each phase (stabilization of each phase-to-neutral voltage).

Orion stabilisers are used with three-phase loads and single-phase loads with 100% current imbalance across the phases and asymmetrical mains voltage.

For the correct operation, Orion voltage stabilisers require the neutral wire presence. Operation without neutral wire connection is achievable by adding a device able to generate it (D/Yn isolating transformer or neutral point reactor).

An automatic circuit breaker is mounted on the regulation circuit to protect against overload and short circuit on the voltage regulator, whilst the auxiliary circuit is protected by fuses.

The instrumentation consists of a multi-task digital line analyser. Such instrument is able to provide with information regarding the voltage stabiliser output parametres, such as phase and linked voltage, current, power factor, active power, apparent power, reactive power, etc..

The alarms (min/max output voltage, gearmotor lock, internal overheating, regulator overload) are recognizable by means of LEDs on the control card.

Voltage control and stabilisation, performed on the true RMS value, are managed by the digital microprocessor. Each phase of every stabiliser belonging to this range is controlled by the same control board used on Vega and Antares models, thus simplifying maintenance operations and spare parts storage.

Up to 45kVA, the stabilisers are equipped with wheels for easy handling.

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Ortea
Manufactured by: Ortea
Model: Orion plus
Product ID: 1033
three-phase
30-1250kVA
digital electromechanical voltage stabilisers orion plus
Standard features
Voltage stabilisationIndependent phase control
PC selectable output voltage*from 210V to 255V (L-N) / from 360V to 440V (L-L)
Frequency50/60Hz ±5%
Admitted load variationUp to 100%
Admitted load imbalance100%
CoolingNatural air ventilation
Up to 35°C aided with fans
Ambient temperature-25/+45°C
Storage temperature-25/+60°C
Max relative humidity95%
Admitted overload200% 2min
Harmonic distortionNone introduced
ColourRAL 7035
Protection degreeIP 21
Instrumentationinput & output digital multimetre
InstallationIndoor
Overvoltage protection– Output class II surge arrestor
– Soft start through supercapacitors in case of blackout

* The output voltage can be adjusted by choosing one of the indicated values.
Such choice sets the new nominal value as a reference for all the stabiliser parameters.

Orion Plus stabilisers are available for different ranges of input voltage fluctuation. In the ±15%/ ±20% and ±25%/ ±30% types, the change of input range is obtained through different internal connections.

The Orion Plus voltage stabilisers regulate the output voltage independently on each phase.

Similarly to the Orion stabilisers, they can supply any single-phase, bi-phase and three-phase load even in case of and up to 100% unbalanced load current and asymmetrical mains distribution.

In this configuration, the presence of the neutral wire is required. The stabiliser can also operate without neutral wire by adding a device able to generate it (D/zn or D /yn isolating transformer or neutral point reactor). The stabilisers are cooled via natural air ventilation, assisted by extracting fans when the cabinet internal temperature exceeds 35°C).

The instrumentation consists of two multi-task digital line analysers which are able to provide with information regarding the status of the lines upstream and downstream the voltage stabiliser (phase and linked voltages, current, power factor, active power, apparent power, reactive power, etc.)

The operating status of the stabiliser can be monitored by means of the LEDs on the front panel displaying all the information regarding each phase operating mode ('power on'; reaching of voltage regulation limits; increase/decrease of voltage regulation) and the possible alarms (minimum and maximum voltage, maximum current: overtemperature; ventilation failure). The alarm indicators are accompanied by an acoustic alarm.

– Up to 250kVA ±15%, the regulation circuit is protected against overload and short circuit on the voltage regulator by an automatic circuit breaker.

– From 300kVA ±15%, an electronic voltage regulator protection system activates in case of overload on the voltage regulator. In such condition, the load supply is not interrupted, but the stabiliser output voltage is automatically set to the lower between the mains voltage and the pre-set output voltage. The service continuity is guaranteed, although the voltage is not stabilised. When the overload condition ceases to exist, the stabiliser switches automatically back to regular functioning.

– The auxiliary circuits are protected by fuses.

– The control logic, performed on the true RMS value, is based on DSP microprocessors.

– The unit parameters and the output voltage reference can be set by using a personal computer, thus allowing for dealing directly in the field with any problems related to voltage stability.

– All Orion Plus stabilisers are provided with Class II SPD surge arrestors.

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Ortea
Manufactured by: Ortea
Model: Sirius
Product ID: 1037
three-phase
60-6000kVA
digital electromechanical voltage stabilisers sirius
Standard features
Voltage stabilisationIndependent phase control
Output voltage selectable via display, PC and/or Ethernetfrom 210V to 255V (L-N)
from 360V to 440V (L-L)
Frequency50/60Hz ±5%
Admitted load variationUp to 100%
Admitted load imbalance100%
CoolingNatural air ventilation
Up to 35°C aided with fans
Ambient temperature-25/+45°C
Storage temperature-25/+60°C
Max relative humidity95%
Admitted overload200% 2min
Harmonic distortionNone introduced
ColourRAL 7035
Protection degreeIP 21
Instrumentation– Input and output digital multimetre with RS485 port5
– LCD display
InstallationIndoor
Regulator overload protectionDigital control
Sistema di comunicazioneEthernet / GPRS / USB / MODBUS TCP/IP
Overvoltage protection– Input class I surge arrestor
– Output class II surge arrestor
– Soft start through supercapacitors in case of blackout

* The output voltage can be adjusted by choosing one of the indicated values.
Such choice sets the new nominal value as a reference for all the stabiliser parameters.

Sirius stabilisers are available for different ranges of input voltage fluctuation. In the ±15%/ ±20% and ±25%/ ±30% types, the change of input range is obtained through different internal connections (only up to 2000kVA ±15% and equivalent).

Sirius stabilisers are equipped with columnar voltage regulators which enable the achievement of high ratings (up to 6000kVA) and a solid and reliable construction, thus meeting the most diverse industrial applications.

The Sirius voltage stabilisers regulate the output voltage independently on each phase. Similarly to the other models, they can supply any single-phase, bi-phase and three-phase load even in case of and up to 100% unbalanced load current and asymmetrical mains distribution.

In any case, the presence of the neutral wire is required. The stabiliser can also operate without neutral wire by adding a device able to generate it (D/zn or D /yn isolating transformer or neutral point reactor).

The stabilisers are cooled via natural air ventilation, assisted by extracting fans when the cabinet internal temperature exceeds 35°C.

The instrumentation consists of two multi-task digital line analysers (fitted with RS485 port) able to provide with information regarding the status of the lines upstream and downstream the voltage stabiliser (phase and linked voltages, current, power factor, active power, apparent power, reactive power, etc.)

The operating status of the stabiliser can be monitored by means of the LEDs on the front panel displaying all the information regarding each phase operating mode ('power on'; reaching of voltage regulation limits; increase/decrease of voltage regulation) and the possible alarms (minimum and maximum voltage, maximum current: overtemperature; ventilation failure). The alarm indicators are accompanied by an acoustic alarm.

Monitoring activities can be run remotely by installing the STABIMON software provided with the unit on a PC (connected to the stabiliser via Ethernet or a GPRS modem). The readings are stored locally by the control system and sent via the Internet (if an Ethernet or GPRS modem connection is established) to a server at Ortea HQ, thus providing the Service centre with the necessary information.

It is also possible to communicate with the stabiliser with the Modbus TCP/IP protocol (standard communication protocol between electronic industrial equipment) via an Ethernet connection with RJ45 cable.

The control system is also provided with two USB ports for downloading stored data and uploading new releases of the control card software.

The Sirius stabiliser is provided with an electronic voltage regulator protection system activates in case of overload on the voltage regulator. In such condition the load supply is not interrupted, but the stabiliser output voltage is automatically set to the lower between the mains voltage and the pre-set output voltage. The service continuity is guaranteed, although the voltage is not stabilised. When the overload condition ceases to exist, the stabiliser switches automatically back to regular functioning.

The control logic is managed by two DSP microprocessors (one performing the control and the other one managing the measurements) which obtain the output voltage stabilisation by adjusting its true RMS value. The whole system is supervised by a third 'bodyguard' microprocessor that controls the correct functioning of the other microprocessors.

The unit parameters and reference output voltage value can be set via a PC connection, allowing for promptly dealing in the field with any issues concerning voltage stability.

The output voltage is reset to the minimum value in case of blackout by means of supercapacitor banks in order to ensure the correct shutdown.

All Sirius stabilisers are provided with Class I and Class II SPD surge arrestors.

Remote communication with the stabiliser

The all-in-one control card manages also the remote communication to the voltage stabiliser. The card is fitted with a local display (showing alarms and setting parameters) and with a keypad used to interact with the card itself.

The remote data monitoring system enables the user and Ortea Service Centre the chance of monitoring the stabiliser on-line wherever installed by means of the STABIMON dedicated software, supplied with each unit.

Alternatively, the communication with the stabiliser can be established via the Modbus TCP/IP protocol.

Should the Ethernet connection not be available, the remote communication can be performed via an embedded GPRS modem. A common SIM data card purchased locally and inserted in the modem allows for a simple data transmission.

STABIMON software

STABIMON is the software managing the communication with the voltage stabiliser. The program can be run when the user wishes to communicate with the stabiliser or simply read the collected information.

In a single page, a dashboard provides with the main information concerning voltage, current, power and alarm status.

On the left-hand side of the page, each phase input voltage, current and cosphi are shown, while on the right-hand side, the corresponding output parameters are shown.

In the central area between input and output parameters, mains frequency and general information for the stabiliser identification are displayed.

The lower part of the screen is used to visualise communication errors (if any), input and output active, reactive and apparent powers, voltages and temperature measured on the base board.

The LED status as available on the stabiliser control panel is also reproduced (the LEDs are red in case of error).

Graphs and statistics relevant to the stabiliser operating status can also be displayed.

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Ortea
Manufactured by: Ortea
Model: Sirius advance
Product ID: 1042
three-phase
60-4000kVA
digital electromechanical voltage stabilisers sirius advance
Standard features
Voltage stabilisationIndependent phase control
Output voltage selectable via displya, PC and/or Ethernet*from 210V to 255V (L-N)
from 360V to 440V (L-L)
Frequency50/60Hz ±5%
Admitted load variationUp to 100%
Admitted load imbalance100%
CoolingNatural air ventilation
Up to 35°C aided with fans
Ambient temperature-25/+45°C
Storage temperature-25/+60°C
Max relative humidity95%
Admitted overload200% 2min
Harmonic distortionNone introduced
ColourRAL 7035
Protection degreeIP 21
Instrumentation– Input and output digital multimetre with RS485 port
– LCD display
– Reactive power regulator
InstallationIndoor
Regulator overload protectionDigital control
Communication systemEthernet / GPRS / USB / MODBUS TCP/IP
Overvoltage protection– Class input I surge arrestor
– Class output II surge arrestor
– Optimal voltage return through supercapacitors in case of blackout
Total protection by-pass kit– Input automatic circuit breaker
– Bypass switch made of an interlocked automatic circuit breaker
– Output motorized automatic circuit breaker to protect against overload, overvoltage, undervoltage, phase sequence error and phase failure
Integrated automatic power factor correction system– Based on energy density metallised polypropylene three-phase capacitors (Un = 525V)
– Three-phase blocking reactor (tuning frequency: 180Hz)

* The output voltage can be adjusted by choosing one of the indicated values.
Such choice sets the new nominal value as a reference for all the stabiliser parameters.

Sirius Advance voltage stabilisers derive from the SIRIUS type, of which they maintain the main technical characteristics.

The standard integration of some functions and accessories usually offered as optional, complete and enrich the equipment.

The additional features are:

– Input automatic circuit breaker;

– Bypass switch via an interlocked automatic circuit breaker;

– Output interlocked motorized automatic circuit breaker;

– Integrated automatic power factor correction system.

The input automatic circuit breaker (QF1) ensures protection against failure and/or short-circuits inside the unit.

The bypass automatic circuit breaker (QF2) protects the line supplying the load against overload and short­circuits in bypass condition/.v

The output motorized automatic circuit breaker (QF3), interlocked with the bypass switch, protects against overload, short-circuit, overvoltage, undervoltage, phase sequence error and phase failure.

The integrated automatic Power Factor Correction system maintains the power factor value (cos φ) to a high level ensuring the known advantages for the users but also affecting the sizing of the stabiliser. The PFC system exploits high energy density metallised polypropylene three-phase capacitors (Un=525V) exclusively thus guaranteeing robustness and reliability. The addition of blocking reactors (detuned filters) eliminates undesired harmonics and protects the capacitors.

The reactive power controller is mounted on the external control synoptic panel.

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Ortea
Manufactured by: Ortea
Model: OPTInet
Product ID: 1061
three-phase
100-4000A
optinet-dettaglio
Standard features
OPTInet BasicOPTInet PlusOPTInet Advanced
Voltage stabilisationIndependent phase control
Output voltage selectable via display, PC and/or Ethernet*220-230-240V (L-N) 380-400-415V (L-L)
Frequency50/60Hz ±5%
Admitted load variationUp to 100%
Admitted load imbalance100%
CoolingNatural air ventilation. Up to 35°C aided with fans
Ambient temperature-25/+45°C
Storage temperature-25/+60°C
Max relative humidity95%
Admitted overload200% 2min
Harmonic distortionNone introduced
ColourRAL 7035
Protection degreeIP 21
Instrumentation– Input & output digital multimetre with RS485 port
– LCD display
– Input & output digital multimetre with RS485 port
– LCD display
– Reactive power regulator
InstallationIndoor
Regulator overload protectionDigital control
Communication systemEthernet / GPRS / USB / MODBUS TCP/IP
Overvoltage protection– Class II input surge arrestor
– Class II output surge arrestor
– Optimal voltage return through supercapacitors in case of black-out
Protection against electromagnetic / radio-frequency noiseEMI/RFI filter
Total protection by-pass kit– Input automatic circuit breaker
– By-pass switch made of an interlocked automatic circuit breaker
– Output interlocked motorized automatic circuit breaker with protection against overload, overvoltage, undervoltage, phase sequence error and phase failure
Integrated automatic power factor correction system– Based on high energy density metallised poly-propylene three-phase capacitors (Un = 525V)
– Three-phase blocking reactor (180Hz)
* The output voltage can be adjusted by choosing one of the indicated values. Such choice sets the new nominal value as a reference for all the stabiliser parameters.
OPTInet has been specifically designed to meet the ever increasing power quality issues that can be easily found in a wide range of industrial applications.

OPTInet combines the established and consolidated characteristics proper of ORTEA voltage stabilisers with features that enable the achievement of energy saving and power quality improvement.

One of the factors that most affect energy saving is given by the fact that electrical appliances are usually designed to operate with an input voltage included in range rather than just one nominal voltage. Nevertheless, supplying a device a voltage higher than the rated one implies higher consumption and decrease of the expected life.

For example, supplying resistive loads 240V instead of 230V implies approximately 10% increase in the power consumption.

This situation can be found worldwide due to the fact that several distribution systems are rated for a voltage higher than 400V (United Kingdom, Australia, parts of India, and so on): OPTInet provide with a practical an efficient answer to such issue.

Furthermore, higher supplying voltage might induce problems in magnetic components (possibility of magnetic core saturation).

Other factors such as proximity to power plants or distribution stations and voltage supplied at high level to cover the far end of distribution lines might affect performance of the supplied loads and energy bills.

In order to optimise energy consumption, the first step is a load survey performed by a qualified technician aiming at assessing the existing situation, deciding what steps need to be taken and estimating the potential energy savings. The survey is made necessary by the fact that not all loads are voltage-sensitive.

To sum up, the main parametres that allow for the estimation of the energy saving are: – Mains voltage different form the load nominal one: the higher the difference, the better the energy saving. – Level of load sensitivity to voltage variations.

An accurate analysis shall allow for the best solution in terms of design and rating. In some cases, it could be more sensible and economical to install an optimiser only for specifi types of loads.

All OPTInet devices are fitted with a EMI/RFI filter to protect against electromagnetic/radio-frequency noise.

OPTInet is specifically designed to allow the adjustment of the voltage received from the mains and bring it back to the value for which the load has been built. OPTInet optimises the load performance, thus obtaining lower consumption, energy saving, cost reduction and longer life expectancy.

OPTInet is available in three configurations:

– OPTInet: base version with adjustment and stabilisation of the output voltage.
– OPTInet Plus: version fitted with by-pass system made of three interlocked automatic circuit breakers.
– OPTInet Advance: top of the range type fitted with by-pass circuit and automatic power factor correction system.
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Ortea
Manufactured by: Ortea
Model: Gemini
Product ID: 1048
single-phase
4-20kVA
static digital voltage stabilisers gemini
Standard features
GeminiGemini Plus
Voltage regulationIGBT control
Selectable output voltage*220-230-240V
Frequency50-60Hz ±5%
Admitted load variationUp to 100%
CoolingForced ventilation
Ambient temperature-25/+45°C
Storage temperature-25/+60°C
Max relative humidity95%
Admitted overload150% 2 sec.
Harmonic distortionNone introduced
ColourRAL 9005
Protection degreeIP21
InstrumentationOutput digital voltmetre
InstallationIndoor
Overvoltage protectionOutput class II varistorOutput class II surge arrestor
ProtectionAutomatic by-pass protection-Input automatic circuit breaker
- Automatic by-pass protection
-Manual maintenance by-pass
* The output voltage can be adjusted by choosing one of the indicated values.
Such choice sets the new nominal value as a reference for all the stabiliser parameters.
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Ortea
Manufactured by: Ortea
Model: Aquarius
Product ID: 1053
three-phase
10-60kVA
static digital voltage stabilisers aquarius
Standard features
AquariusAcquarius Plus
Voltage regulationIGBT control
Voltage stabilisationIndependent phase control
Selectable output voltage*220-230-240V (L-N) / 380-400-415V (L-L)
Frequency50-60Hz ±5%
Admitted load variationUp to 100%
CoolingForced ventilation
Ambient temperature-25/+45°C
Storage temperature-25/+60°C
Max relative humidity95%
Admitted overload150% 2 sec.
Harmonic distortionNon introdotta
ColourRAL 9005
Protection degreeIP21
InstrumentationOutput digital multimetre
InstallationIndoor
Overvoltage protectionOutput class II varistorOutput class II surge arrestor
ProtectionAutomatic by-pass protection-Input automatic circuit breaker
-Automatic by-pass protection
-Manual maintenance by-pass
* The output voltage can be adjusted by choosing one of the indicated values.
Such choice sets the new nominal value as a reference for all the stabiliser parameters.
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Ortea
Manufactured by: Ortea
Model: DLC series
Product ID: 1056
Line conditioners
LybraSingle-phaseVega/Antares + advanced protection package0.3-135kVA
AriesThree-phaseOrion + advanced protection package2-250 kVA
Aries PlusThree-phaseOrion Plus + advanced protection package30-1250 kVA
DiscoveryThree-phaseSirius + advanced protection package60-6000 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:

– Input automatic circuit breaker (protection against short-circuit).

– Delta/Star or Delta/Zig-zag input isolation transformer (complete galvanic isolation between the mains and the load and cancellation of third and triplen harmonics).

– Class 1 SPD surge protective device (protection against lightning).

– Class 2 SPD surge protective device (protection against transients).

– EMI/RFI filter (protection against electro-magnetic and radio-frequency noise).

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Ortea
Manufactured by: Ortea
Model: BTS series
Product ID: 1073
Telecommunication (TLC)
BTS01
Standard features
BTS1BTS3BTS3/1
Number of phases133-1
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 ratingfrom 5kVA to 80kVA
Input voltage range±15% - ±20% - ±25% - ±30% - +15%/-25% - +15%/-35% - +15%/-45%
Output voltage range±0,5%
Frequency50/60Hz ±5%
Admitted load variationUp to 100%
Admitted load imbalancen.a.100%n.a.
CoolingNatural air ventilation (air extraction over 45°C)
Ambient temperature-25/+45°C
Storage temperature-25/+60°C
Max relative humidity95%
Admitted overload200% 2min
Harmonic distortionNone introduced
ColourRAL 7035
Protection degreeIP 54
InstallationOutdoor
Overvoltage protectionClass II surge arrestor

* The output voltage can be adjusted by choosing one of the indicated values.
Such choice sets the new nominal value as a reference for all the stabiliser parameters.

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 stabiliser 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 stabiliser specifically designed for BTS sites has proved to be an efficient solution in the telecommunication field.

In comparison to a standard voltage stabiliser, a BTS unit offers the following characteristics:

– IP54 metallic enclosure for outdoor installation.

– Manual by-pass.

– Input and output circuit breakers.

– Input digital voltmeter.

– Output Class II surge arrestors.

– Optional isolating transformer.

The stabilisers 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 stabiliser 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 stabilisers 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 stabiliser (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 stabiliser exploits a microprocessor-based control logic.

Main features

– Power design based on the maximum input current.

– Regulation based on the «rms voltage» and insensitivity to harmonics on the mains.

– Full functionality with load charge variable from 0 to 100%.

– Up to 30% harmonic content admitted on the load current.

– Insensitivity to the load power factor.

– No generation of noticeable harmonics in the output voltage.

Protections and signals

– Motor rotation stop due to regulation reaching the limit switches.

– Maximum and minimum line voltage alarm.

– Ambient thermostat (set to 65°C).

– Automatic circuit breaker to protect the voltage regulator.

– Fuses to protect the auxiliary circuits.

– Class II surge arrestors.

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Ortea
Manufactured by: Ortea
Model: BC series
Product ID: 1138
Broadcasting

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 stabiliser 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 stabiliser includes:

  • Digital voltage stabiliser.
  • Isolating transformer.
  • Input & output automatic circuit breakers.
  • Input Class I surge arrestors.
  • Output Class II surge arrestors.
  • EMI/RFI filter.
  • Instrumentation (voltmeter/multimetre).

For outdoor installation, the unit is housed in an IP54 metallic enclosure. Small power units can be assembled in enclosures suitable for 19” rack mounting, thus advantaging practicality and ergonomics.

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Ortea
Manufactured by: Ortea
Model: AOT series
Product ID: 1141
Mains filters

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:

  • Input automatic circuit breaker.
  • Parallel surge arrestors (redundant system).
  • Isolating transformer.
  • Capacitors.
  • Detuning/blocking reactor.
  • Output automatic circuit breaker.

The operation can be divided in three phases:

1. The surge arrestors discharge to ground the direct overvoltage energy
2. The isolating transformer ensures galvanic isolation between the mains and the equipment to be protected
3. The filtering module eliminates the residual energy.

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Ortea
Manufactured by: Ortea
Model: F&B series
Product ID: 1148

Specifically designed for food & beverage, packaging and bottling industries, these voltage stabilisers are housed in an IP54 cabinet cooled via air conditioning units.

The stabiliser 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 stabiliser.

On request, the cabinet can be in stainless steel.

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Ortea
Manufactured by: Ortea
Model: OUTDOOR series
Product ID: 1145

All ORTEA voltage stabilisers can be assembled in cabinets specifically designed for outdoor installation. The standard outdoor cabinets are built for an IP55 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).

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voltage stabilizers