Kaidexing

Tel：400-110-9708

Fax：86(010)-82719489-806

Mail：kdx@cnkdx.com , cnkdx@126.com

Web：http://www.cnkdx.com

Add：1221/1245, Building A, Building 1, Jiayuan East District, Qinghe, Haidian District, Beijing

Optical fiber temperature measurement system for dry type transformer

Product Application Description:

The traditional "electronic temperature controller for transformer" (JB / t7631-2016), which uses PT100 as the temperature sensor, only limits the measurement range below 1000V, and the sensor is made of metal, which has potential safety hazard. Therefore, the probe and lead wire of temperature sensor for measuring transformer winding temperature have higher requirements. The optical fiber temperature measurement system of dry-type transformer uses the fluorescent optical fiber temperature sensor independently developed by Beijing kaidexing company as the temperature sensing element. The temperature sensor is immune to electromagnetic interference and resistant to high voltage (100kV / optical fiber to ground outlet distance is 0.4m). Fluorescent optical fiber temperature measurement from the source of temperature measurement to completely solve the potential safety problems, improve the safety level of the transformer.

Objective of optical fiber temperature measurement system for dry type transformer:

1. According to the operation environment of dry-type transformer, the isolation and shielding of external

electrical interference signals are realized from power supply, signal input end, signal output end and temperature

control box shell.

2. No metal substance, intrinsically safe.

3. In view of vibration, dust, humidity, oil pollution and other working environment, multi-layer protection

measures are taken to make the optical fiber temperature controller have good electromagnetic compatibility and

ensure the stable and reliable operation of the temperature controller.

System technical parameters:

This product is very suitable for high voltage, strong magnetic field, inflammable and explosive temperature

measurement occasions. For example: high voltage hot spot temperature measurement of rail transit dry-type

transformer and other electrical equipment, photovoltaic equipment, switch cabinet high-voltage contact,

dry-type transformer, oil immersed transformer, medical, mining and other special environment temperature

measurement.

Ambient temperature - 20 ℃ ~ + 55 ℃

Ambient humidity ≤ 95% (25 ℃)

Working voltage AC 220V (+ 10%, - 15%)

Operating frequency 50 Hz or 60 Hz (± 2 Hz) (AC)

The measuring range - 40 ℃ ~ 200.0 ℃

Measurement accuracy ± 1 ℃

Resolution 0.1 ℃

Control error ≤± 0.5 ℃

Control output capacity 5A / AC250V

Number of temperature measurement channels 4(scalable)

Sensor type imported quartz optical fiber, standard configuration 3M

The temperature compensation range - 19.9 ℃ ~ + 19.9 ℃

Product function selection note: this sensor wireless calibration, also does not need the user manual calibration,

the system uses the adaptive measurement, does not need LD value calibration.

Working power supply (customizable):

1、DC110V

2、DC220V

3、AC220V

Temperature measuring element:

1. Platinum thermistor Pt100

2. Fluorescent optical fiber

Number of temperature measurement channels:

1-16 channels, multi-channel temperature measurement

Installation mode:

1. Wall mounted installation

Basic function (conventional D type):

1. Three way winding temperature measurement; automatic / manual start / stop of cooling fan; numerical

compensation function of temperature display of each channel;

2. The black box function is provided, which can record the temperature data of the last power failure and the

historical maximum temperature;

3. TFT liquid crystal display, LED display lamp, simple operation;

4. Real time display of temperature curve and data storage;

5. Provide alarm function of transformer door cabinet point opening;

6. Provide a set of overtemperature alarm contacts (1 normally open and 1 normally closed);

7. Provide a group of overtemperature trip contacts (1 normally open and 1 normally closed);

8. Provide a group of fan remote transmission contacts (1 normally open, 1 normally closed);

9. Provide a group of thermostat fault alarm contacts (1 normally open, 1 normally closed);

Customization function (special requirements can be customized)

1. Provide 1-way core temperature measurement and 2-way iron core overtemperature alarm contacts

(1 normally open and 1 normally closed)(I function);

2. Provide RS485 communication function, communication with time scale, can receive timing, MODBUS-RTU

protocol(F function);

3. Fan fault judgment function, and provide fan fault alarm contact(l function);

4. Four independent 4-20mA analog current output function is provided(e function);

5. Provide environmental temperature measurement and control of one way machine room;

6. Winding temperature rise rate and core temperature rise rate alarm function;

7. The communication protocol can adopt PROFIBUS, IEC60870-5-103 and Ethernet communication

We conduct quality inspections on raw materials to ensure the reliability and stability of the mechanical product manufacturing process.

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Beijing KDX Electronic Information Technology Co., Ltd., is located in Beijing's Haidian High-tech Development Zone, Company comprehensive modern new energy technology and optical fiber communication technology, is committed to in optical transmission system and image coding device and an operation and maintenance system technology and equipment research and production...

Tel：400-110-9708

Fax：86(010)-82719489-806

Website：http://www.cnkdx.com

Mail：kdx@cnkdx.com , cnkdx@126.com

Add：1221/1245, Building A, Building 1, Jiayuan East District, Qinghe, Haidian District, Beijing