Optical fiber temperature sensors are often used to provide high accuratetemperature information in the transformer, the DR-E3 system provides a has the following advantages of modularity, economical solution to monitoring the temperature type:

1, through the direct monitoring of transformer winding hot optical fiber sensor built-in, core and top oil temperature, other position produces temperature;

2, through the precise acquisition of winding hot spot data can obtain an optimaland precise winding hot spot model, this model can be copied to the DR-E3monitoring unit of Dynamic Ratings, is applied to the thermal model of all transformers, providing optical fiber temperature measurement needs a plurality of transformer based on the lowest cost.

3, suitable for optical fiber temperature sensor two temperature sensitive chemicalmaterials: "gallium arsenide phosphide" and ""

Technical indicators:

1, measurement range: -200 degrees C---+300 degrees C

2, accuracy: + 0.2 degrees C or a full range of 1%

3, resolution: 0.1 degrees C

4, sampling rate / Channel: 250ms, 500ms, 1sec

5, the scope of work: -40 degrees +70 degrees C C---

6, field measurement devices: four channel measurement module, eight channel measurement device, the 1-40 channel measurement device