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Voltage Stabilizers
When an electricity supply is unstable it can cause problems with equipment that is designed to run within normal voltage fluctuation tolerances. Sometimes, particularly with test and calibration systems a limited or controllable voltage range is required. A voltage stabilizer is used to provide a constant supply voltage, that can be controlled from a set point input.
Electronic Voltage Stabilizer-1 kVA and 2 kVA
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The REOTRON MEK 7711 provides a stabilised voltage within ± 6 % of nominal for a wide range of different supply voltages. It is possible to accommodate a variation on the supply of up to ± 25 %. The unit is delivered with plug-connectors fitted and is ready to operate with the equipment that requires a stable supply.
The output voltage is adjusted in 6 steps so that the input voltage range of 75% to 125% is stabilised to 94% to 106% of the effective 230V output. This is achieved by using an auto-transformer with a primary winding that has multi-tappings which correspond to different supply voltages. On the secondary side there are a further six tappings, which are connected to the output circuit through solid state switches (triacs). A microprocessor controller determines the appropriate tapping, depending to the input voltage level. In this way a constant output voltage is maintained.
Externally, a row of LED's are used to indicate whether the voltage is outside the allowable limits and which tapping has been selected. A soft-start prevents false tripping when the unit is powered-up.
Surge suppression is available as an optional extra. |
REOSTAB Voltage Stabilizers
REO can build voltage stabilizers with up to 1MVA (3 phase) power capacity. All units in the range operate on the servo-feedback principle and use a variable transformer, buck-boost combination. There is a standard range available for single and three phase supplies, catering for different mains variation ranges. The three phase units can have common or separate control of all phases. |
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