With the continuous development of technology, the transformer industry is also developing better and better. Then, compared with the traditional power transformer and electric furnace transformer, our product has been continuously innovating, which achieves the effects of low loss, low noise and short circuit resistance.
In fact, the safe operation and service life of dry-type transformers largely depend on the safety and reliability of transformer winding insulation. Winding temperature exceeds the temperature of the insulation damage to insulation resistance, is one of the main causes of transformer can not work normally, so the transformer operating temperature monitoring and alarm control is very important, this temperature control system of TTC-300 series are introduced.
(1) fan automatic control: the temperature signal is measured by the Pt100 thermistor, which is embedded in the hottest part of the low voltage winding. When the winding temperature is up to 110 DEG C, the system will automatically start the fan cooling. When the winding temperature is low to 90 degrees, the system will automatically stop the fan.
(2) over temperature alarm and trip: the coil or core temperature signal is collected by the PTC nonlinear thermal temperature measuring resistor embedded in the low voltage winding. When the transformer winding temperature continues to rise, if reached 155 degrees, the output of the system over temperature alarm signal; if the temperature continues to rise up to 170 degrees Celsius, the transformer cannot continue to be delivered over temperature tripping signal to the two circuit, the transformer should quickly tripping..
(3) Pt100 thermistor temperature display system: the low-voltage windings embedded in the measured temperature value, directly showing the winding temperature (maximum three-phase inspection and display, and recorded its highest temperature), the highest temperature in 4 ~ 20mA analog output, for transmission to the distant (a distance of up to 1200m) computer, can be equipped with computer interface, 1 transmitter can simultaneously monitor up to 31 transformers.
In the use of dry-type transformers, sometimes closing process does not appear, and how to solve it? Solution: dry transformer, each closing process, need to be lifted to close. Dry-type transformer dry-type is the corresponding oil immersed transformer and called. A transformer suitable for non liquid insulation.
The protection should be removed before switching on. It should be the protector of the transformer. In some electronic protectors, the contact state between the contacts in the non energized state and the initial state after the energization is reversed.