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Dry Type Transformer Temperature Controller/Temperature Controller/

Dry type transformer temperature controller BWDK-Q201

Temperature range:-30.0℃~240.0℃
Ambient temperature:-20ºC~+55ºC
Ambient humidity:<95% (25ºC)

Working voltage:AC 220V (+10%,-15%)
Working frequency rate :50Hz OR 60Hz(±2Hz)
Measurement accuracy :±1%FS(Thermostat level 0.5,Sensor class B)
Resolution ratio :0.1ºC
Fan output total capacity :5A/250VAC
Control output capacity :5A/250VAC;5A/30VDC(resistivity)
Power dissipation:≤8W
Production standards:JB/T7631-2005 Electronic temperature controller for Transformers”Industry standards
Adoption of accreditation standards:ISO9001:2008 International Quality Management System Certification
Pass the test standard:IEC61000-4:1995 International standard
GB/T17626-2008 Electromagnetic compatibility test and measurement techniques”standard

  • Product Details
  • FAQs

The temperature controller for dry-type transformers is an intelligent controller designed specifically for the safe operation of dry-type transformers. The temperature controller adopts microcontroller technology and uses the platinum thermistor embedded in the dry-type transformer winding to detect and display the temperature rise of the transformer winding. It can automatically start and stop the cooling fan to force air cooling of the winding, avoiding or reducing faults caused by high temperature in the transformer. It can also control the output of over temperature alarm and over temperature trip to ensure that the transformer operates in a safe state, thereby extending the working life of the transformer.


Product Selection:

model function
  1. Monitor up to three dry-type transformer windings;
  2. Display maximum temperature;
  3. Built-in fan control, fan exerciser;
  4. Alarming function and relay output control;
  5. Trip function and relay output control;
  6. Automatic fault detection function;
  7. Historical record function;
  8. Range in temperature revise;
  9. Self-inspection;
  10. Switch input judging function.
BWDK-Q201E 4-20mA output for integration with SCADA systems
BWDK-Q201F RS485 or RS232 serial communication function.
BWDK-Q201G An additional sensor is added to measure the ambient temperature
BWDK-Q201I An additional sensor is added to measure the temperature of silicon steel sheet
BWDK-Q201C Add thermistor PTC150 or PTC130 for interlocking control


1. For example: BWDK-Q201F dry-type transformer temperature controller, BWDK represents the national standard model of the temperature controller, Q represents the embedded iron shell temperature controller, and F is the code for communication function;
2. E, F, G, I, and C are all function codes, which can be combined. The following examples are provided to illustrate:
Temperature controller model: BWDK-Q201FG, indicating that it is an embedded iron shell temperature controller. Its functions include: conventional function, communication function (F), and an additional room environment temperature measurement and control function (G).
If there are already two functions, E and F, and only one of the G and I functions can be selected as an additional function, and there are at most three simultaneously existing function codes. For example, the temperature controller models are BWDK-Q201EFG and BWDK-Q201EFI.
3. If there are other special technical or functional requirements, such as Ethernet communication, Profibus communication, multi-channel temperature measurement, fiber optic temperature measurement, etc., you can contact us.

Intelligent dry transformer monitor
Small iron shell wall mounted temperature control box

Model Number:BWDK-Q series
External dimensions:200mm × 260mm × 85mm
Opening size:181mm × 231mm

(1) Install instrument mounting holes on the transformer box according to the size of the instrument openings.
(2) Insert the BWDK-Q temperature controller into the already opened insertion hole on the transformer box.

Application scenarios
Customized OEM solutions for your industry,
We offer original equipment manufacturer (OEM) solutions in multiple vertical markets,
These markets rely on high-quality, stable, and carefully designed technologies tailored to their industries.
The payment term: We accept TT,30% deposit and 70% balance against copy of BL.
The delivery time: Usually it will take about 15-20 days.
The standard of package: Usually use strong plywood case for protection.
The logo: lf you have good quantity, it absolute no problem to do OEM.
Our market: our products are popular in Indonesia, Philippines, Russia, USA, Middle East and soon. Some of them are our regular customers and some of them are developing. We hope you canjoin us and make mutual benefit from our cooperation..
Warranty: in 12 month since BL date.
Quick response in before sales period help you got order.
Excellent service in production time let you know each step we made.
Reliable quality solve you after sale headache.
Long period quality warranty ensure you can buy without hesitate.
1. One-stop supplier globally.
2. More than 13 years professional experiences in electrical appliance industry.
3. We offer professional online technology support for perfecting your electrical solution free
4. Experienced sales service and suggestion.
5. All the products with accessories under strict quality control and final inspection before shipping.
6. We can assure the powerful competitive price and reliable quality products.
7. Most competitive shipping rate from our own shipping forwarder.
8. Warranty assurance: 12 month
9.Whatever big or small order, we can provide you one-to-one service!




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