Importance of Automatic Voltage Stabilizer for Medical Devices
A voltage stabilizer also known as Automatic Voltage Regulator (AVR) or Fully Automatic Voltage Regulator stabilizes the main supply voltage to the load. It provides protection against power supply problems such as voltage sags, brownouts and surges. Automatic Voltage Regulator It is an electrical appliance designed to provide a constant voltage to the load at its output terminals regardless of changes in the input supply voltage. It protects the equipment or machine from overvoltage, undervoltage and other voltage surges.
There are a wide variety of automatic voltage stabilizers available in the market today. These can be single-phase or three-phase units depending on the type of application and capacity required. Three-phase voltage stabilizers are available in two versions, balanced load models and unbalanced load models.
1.Types of Voltage Regulators:
1.Servo:
A servo voltage stabilizer provides a stable voltage by varying the winding ratio of a transformer according to a negative feedback circuit. It has a moving mechanism in the form of a servo motor and attached carbon brushes.
2.Magnetic Induction:
Magnetic induction voltage stabilizers are ideal when a low-maintenance automatic voltage stabilizer that can operate reliably in harsh environments is required. Magnetic induction voltage stabilizers are sometimes confused with induction motors. The principle of the magnetic induction voltage regulator is to change the proximity between the primary winding and the secondary winding. In this way, the size and direction of the magnetic flux coupled to the windings will change. Depending on the relative position of the two windings, the output voltage can be increased or decreased to the limit.
3.Contactless:
Contactless voltage regulator is also known as contactless voltage regulator. It is a difference from servo voltage regulator. It mainly relies on the closure of transformer taps and thyristors for voltage regulation. Contactless voltage regulators can be used in environments with high voltage accuracy requirements.
2.Advantages of voltage regulators:
- Very accurate output voltage regulation
- A variety of kVA ratings, voltages and configurations are available
Easy to apply to outdoor applications
- High tolerance for system faults and overloads,
- High tolerance for power factor and frequency deviations
- Good line isolation
- Relatively cheap
- The voltage correction may not be fast enough for electronic loads.
3.The importance of voltage regulators in the medical field:
Almost all medical equipment needs to be driven by electricity. In addition to medical equipment related to the technology and performance of the machine itself, the normal supply of electricity is also crucial. The normal use of medical equipment is related to the life of the patient, and a slight mistake will lead to irreversible results.
The stability and reliability of the power supply are related to the lifeblood of the thinker. Advanced equipment also poses challenges to the power supply. During the use of medical equipment, problems such as failure to work under DC and AC, electrical failure, inability to start and output will occur. Alarm failure, leakage, burns, button failure and other phenomena caused by the equipment also often occur. Therefore, in this case, a voltage stabilizer dedicated to medical equipment is generally used to maintain the stability of the output voltage. However, as long as it is a voltage stabilizer, it can be regarded as a voltage stabilizer dedicated to medical equipment, but the voltage stabilizer that meets the requirements of medical equipment is a high-quality voltage stabilizer among the voltage stabilizers.