A high-performance servo stabilizer regulates ordinary grid fluctuations in the best way possible. With adequate regulation speed (1000 V/sec.) and full protection, by compensating the difference between phases as well as voltage fluctuations, It ensures the connected systems to operate reliably. Since the output voltage tolerance is ±1%, electronic stabilizer is an ideal solution to secure electronic load. However, for applications that the network voltage changes momentarily and frequently (between 20VAC and 50VAC) the mechanical servo motor will move continuously and because of this, the risk of a breakdown goes up and the regulator’s speed might turn out to be insufficient. In cases of the network voltage changes momentarily and frequently, an Electronic Stabilizer could be the solution.
In such cases, there is no risk of a mechanical breakdown since electronic stabilizers do not have any moving parts. They also yield better results in comparison to servo stabilizers, due to the fact that their regulation speed is 1000 V/sec. and output voltage tolerance ±1%.
Therefore, electronic stabilizers should be used applications where the network voltage changes frequently and for sensitive & critical machinery that needs high speed regulation and electronics devices. Servo stabilizers are more suitable for general applications (lighting, modulation of plant/building voltage, non-critical loads etc.), yet electronic stabilizers are still essential to counterfrequent and momentary changes in voltage during such general applications as well.
- True RMS value measurement
- DS-PIC microprocessor-controlled system
- Excellent dynamic and static regulation
- Wide input voltage interval, 130-270 VAC
- Electronic protection against overload and short circuits
- Regulation at 220 V ±1%, 1000V/sec. regulation speed
- LCD Panel with load level, input and output voltages displays
- Programmable lower and upper overvoltage protection
- Each phase can be independently regulated. In case of a phase is out of the tolerance range, all phases are shut down at the same time. Once voltage is applied to the system again, all phases are turned on at the same time. After each phase checked separately, when all phases are in balance then output voltage is applied to the load. Thanks to this control, output voltage is applied to the load in a delayed manner. In case of any failure of the phases, all phases are simultaneously shut down to protect the system.
- Thanks to the semi-conductive technology, risk of breakdown is low. Also service time is prolonged and maintenance free.
- Protects itself and the system in case of sudden voltage impact or changes. If necessary, it automatically interrupts its output.
- Monitors grid voltage changes and indicates that connected systems are protected and output voltage is fixed.
- Output voltage is measured, adjusted and displayed to the user as TRUE RMS.
- Displays network voltage values and notifies the user with an audible alert in case of sudden increases or drops, so that precautions can be taken.
- Audibly notifies the user in case of overheating and overloading.
- In case output voltage goes above the adjusted value, it shuts itself down by turning the output contactor off, thus protecting the system. Also indicates this situation through audio and LED notifications.
- Displays output load and provides audio notification in case of overloading or short circuits. Protects itself by turning the circuit off through the output contactor.
| GENERAL | |
|---|---|
| Model | VRS Series (1-Phase) 10kVA-100kVA / VRST Series (3-Phase) 30 kVA-400kVA |
| Topology | Full Automatic Static Stabilizer with IGBT Semiconductor Architecture including active rectifier and inverter with high frequency switching |
| Control | DSP Controller |
| Overall Efficiency | > 95% |
| Mechanical By-pass | Manual “Mains Power – Voltage Regulator” Switched Selector |
| INPUT | |
| Input Voltage | 230/400V (3-phase) , 230V (1-phase); Optional 115/200VAC |
| Input Voltage Regulation Range | ±25%; Optional ±50% |
| Operating Frequency | 50 Hz±5 or %60 Hz±5% |
| Input MCB | Optional |
| OUTPUT | |
| Output Power Factor | 0.8 inductive and capacitive |
| Output Voltage | 230/400V (3-phase), 230V (1-phase); voltage is adjustable through the front panel (Ex: if the load voltage is 240V for 220V system then the output voltage can be adjusted as 240V from the front panel) |
| Output Voltage Tolerance | ±1% adjustable upto 5% |
| Regulation Speed | 1000 V/sec |
| Dynamic Response Time | <50 msec |
| Dynamic Response Voltage Tolerance | ±10% with %100 input voltage change |
| Overload Level | 100% - 125% for 10 minutes, 125% - 150% for 1 minutes |
| Output Frequency | Equal to Input Frequency |
| Output ThD | Same with Input |
| Output Protection | Short circuit, Overvoltage, Over Temperature (electronic protection), High and Low Voltage Interruption, MCB (optional) |
| Load Power Factor | Independent from Inductive and Capacitive load, and unlimited |
| DIGITAL CONTROLLING PANEL | |
| Indicator and Buttons | 2 x 16 LCD Panel, Menu Selection and Parameter Adjustment Buttons |
| Warning Messages | High/Low Input Voltage, High/Low Output Voltage, Overload, Over Temperature, SCR Fuse Failure, Fan Failure |
| Monitored Values | Input Power, Output Voltage and Load Percentage (%) |
| Output Tolerance Adjustment | Between 1% and 5% |
| Output High Voltage Protection Adjustment | Adjustable between +10% and +20% in intervals of 1V |
| Output Low Voltage Protection Adjustment | Adjustable between -10% and -20% in intervals of 1V |
| Audio Alarm | 2 short “BEEPS” in every 2 seconds for Warning Messages |
| Alarm Relay | Over Temperature, High 0utput Voltage, Low Output Voltage, Overload, Fan Failure, SCR Failure, Low Input Voltage, HighnInput Voltage |
| COMMUNICATION | |
| Optional | Remote Monitoring through RS-232 and RS-485 Modules, TCP/IP, Parameter Adjustment, Last 250 events recorded and displayed on front panel and on PC via remote communication |
| ENVIRONMENT | |
| Cabinet | Indoor |
| Cooling | Forced with Redundant Fan / Natural (OPTIONAL) |
| Operating Temperature | -10 / +40 °C. Higher operating temperatures are available, please consult |
| Protection Level/Color | IP 20 / RAL 7035 (Standard), higher IP rating and different colors are available, please consult |
| Relative humidity | 90% |
| Operating Attitude | Max. 2000 Mt. (Higher altitudes requires de-rating, please consult ) |
| Noise Level | Lower than 60dB at a distance of 1 m |
| Electrical Standards | EN 50091-1 (Safety) / EN 50091-2 (EMC) |