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SVR Auto Transformer
Merry
2000kv SVR Auto Transformer Step Voltage Regulator series
Overview
SVR automatic step voltage regulator automaticaly adjusts the gear of on-load tap changer according to the condition of line voltage torealize the change of transformer ratio, so as to ensure that the output voltage is stable in a certain range. It can be widely used in powersupply line with long distance of power supply, large power supply load, large votage fluctuation and power quality can't meet the usagestandard. It can also be used in industrial and mining enterprises whose voltage quality can't meet the production needs. The product hasobtained a national patent, with patent number ZL2010205818.4
Configuration & working principle
-SVR automatic step voltage regulator consists of three parts:autotransformer, on-load tap changer and automatic controller.
The whole coil of autotransformer is divided into three parts:series coil, shunt coil and control coil. The series coil is a group with multiple taps, These taps are parallel connectedbetween the input and output through different contacts of the on-load tap changer to change the tap position, so as to change theransformation ratio of the autotransformer and adjust thevoltage. The shunt coil is the common winding of theautotransformer, to generate magnetic field to transfer energyThe control coil provides the working power and sampling signalfor controller.
The on-load tap changer is a switch that can change the contactwith load. In the automatic voltage regulator, the taps of the serieswinding are connected to different contacts of the on-load tapchanger, and the output voltage can be changed by adjusting thetransformer ratio through the switching contacts.
The automatie controller is the core part of the whole device. It ismainly consists of single-chip control chip, display cireuit, keycircuit, voltage sampling, current sampling, status input,communication port, control output circuit, data storage and othercireuits. It applies computer technology and electronictechnology, adopts military-grade control chips, has highreliability, strong anti-interference ability, and can adapt to harshoutdoor environments.
Features
- The device adopts autotransformer structure, which has lowloss and high efficiency.
- The voltage regulation range is wide, the voltage regulationeffeet is obvious, and the regulation accuracy is high.
- Automatic tracking of circuit voltage change, adjust the gearof tap changer, to realize on-load voltage regulation of voltageregulator automatically.
- It can real-time display the circuit output voltage of the realtime voltage, current, current gear, total operation times and dailyoperation times, set parameters and also can modify the setparameters
- With excellent control performance and communicationfunction, realizing the "four remote"functions of remotemetering, remote signaling, remote adjustment and remotecontrol.
- It adopts special interference measures to ensure the normaloperation of the controller.
- The controller has the function of the highest and lowest gearlimit protection to prevent the misoperation in various waysand prevent the tap changer in stuck.
- The controller has the function of under voltage protection,over-current protection and daily action limit times.
- With RS232 communication interface, which can realize themonitoring of 30-50m distance through the short-distancewireless module and the remote communication by GPRS.
- On-load tap changer oil tank is isolated from autotransformeroil tank.
- Small volume, large capacity, light weight, easy to install.
- It has significant effect of consumption reduction and energysaving.
- High cost performance, high reliability.
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