What are the main functions of Innotek's dry-type transformer thermostats?

Date: July 23, 2025 14:42:09

InnotekDry-type transformer thermostatWith a variety of functions, different models will have some extensions and differences in the basic functions, the main functions are as follows:
  1. Temperature displayThe temperature of the transformer's three-phase windings can be detected and displayed in a touring mode, or only the temperature of the highest phase of the three-phase windings can be displayed, with a touring time of approx. 6 seconds.
  2. Fan controlWhen the temperature value of any one of the three-phase windings of the transformer reaches the set fan-starting temperature value, the fan will start running automatically; when the temperature drops to the set fan-stopping temperature value, the fan will stop automatically, and the starting and stopping of the fan can also be manually controlled.
  3. Over Temperature Alarm: When the transformer winding temperature exceeds the set over-temperature alarm value, the temperature controller sends out an alarm signal to remind the staff to pay attention.
  4. Over-temperature tripping: If the transformer winding temperature continues to rise above the set over-temperature trip value, the thermostat will output a trip signal to cut off the transformer's power supply to protect the transformer equipment.
  5. malfunction alarm: Can effectively determine the sensor open circuit and other fault signals, when a fault occurs, a fault alarm signal is issued to ensure that the transformer in the case of power failure, power supply, temperature control box will not mistakenly send out signals such as alarms or tripping.
  6. "Black box" function: The temperature data of the last power-down and the historical maximum temperature can be recorded, which is convenient for the staff to trace and analyze the temperature change of the transformer.
  7. Fan timed excitation function: Timed detection and protection of the fan to extend the service life of the fan.
  8. Simulation test functionThe "Analog Output Status Detection" function is designed for users to test and debug the functions of the temperature control box before use.
  9. Digital Compensation Function: With the function of numerical compensation for each channel temperature display, the temperature measurement value can be calibrated to improve the measurement accuracy.
  10. Cabinet door open alarm function: Provide transformer door cabinet point open alarm function, to prevent unauthorized personnel to open the cabinet door on the equipment caused by damage.
In addition, some models also have some extended functions, such as IB-Q201E adds three or four independent 4-20mA analog current outputs, IB-Q201F adds RS485/232 serial communication function, IB-Q201G adds one way of measuring and controlling the environment temperature of the machine room, IB-Q201I adds one way of measuring and alarming the temperature of the transformer core.

What is the temperature measurement accuracy of the Innotek dry-type transformer thermostat?

The temperature measurement accuracy of Innotek dry-type transformer thermostats is typically ±1% FS (thermostat class 0.5, sensor class B) with a resolution of 0.1°C. The temperature measurement accuracy of Innotek dry-type transformer thermostats is typically ±1% FS with a resolution of 0.1°C.


for example, its BWDK3KR dry-type transformer temperature controller, IB-Q201 dry-type transformer thermostat and other models, the measurement accuracy of this standard. In addition, Innotek's fiber optic temperature measurement system for transformer windings has a measurement accuracy of ±1℃ and can be customized.

What are the types of temperature sensors in Innotek's dry-type transformer thermostats?

There are two main types of temperature sensors for Innotek dry-type transformer thermostats:


  • Platinum RTD (Pt100)Dry-type transformer temperature controller is used is platinum RTD (Pt100), usually three-wire system. Part of the model will also be used at the same time high linearity of platinum resistance (Pt100) and non-linear thermistor (PTC) for the winding temperature detection and control, in order to improve the reliability of the system, such as IB-S201D temperature controller.
  • Fluorescent Fiber Optic Temperature SensorsFluorescent fiber optic temperature sensor independently developed by InnoTech adopts the principle of fluorescence afterglow, and its sensor type is quartz fiber with 5 meters as standard (custom length 0-20 meters is available). The sensor has the advantages of anti-electromagnetic interference, good high-voltage insulation, stability and reliability, especially suitable for high-voltage, strong electromagnetic interference environment, such as dry-type transformer fluorescent fiber optic temperature measurement system uses this type of sensor.
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