1. Basic functions
1. The instrument can measure the temperature of the three-phase winding of the dry-type transformer, and use the LED to display the three-phase temperature value cyclically every 4 seconds or to display the maximum value of the three-phase temperature at a fixed point.
2. The instrument can use keys to input 4 kinds of temperature setting values. When the measured temperature exceeds each set value, the start and stop of the fan, over-temperature alarm, and ultra-high temperature trip are respectively controlled. The user can modify the temperature setting value at any time, and it will not disappear after power off.
3. The instrument has sensor disconnection fault detection function.
4. The instrument has the functions of automatic timing start and manual start of the fan. The instrument can be set to automatically start the fan for 1 minute within 1-250 hours.
5. The instrument has a black box recording function of the maximum temperature history, and the maximum temperature value can be updated at any time.
6. According to the needs of use, the instrument can provide digital or analog output
2. Technical parameters
Working environment temperature: 0~50℃
Working environment humidity: less than 90%RH (25°C)
Working power supply: AC220V/50HZ
Measurement accuracy: 1.0 level (sensor 0.5 level, temperature controller 0.5 level)
Sensor: platinum resistance (PT100)
Measuring range: 0~200.0℃
Total capacity of fan contacts: AC220V/20A
Alarm contact capacity: AC250V/5A
Dimensions: W160×H80×L125mm
Hole size: 152+0.5×76+0.5mm (width X height)
Basic functions: roving display of three-phase package temperature, fan control, over-temperature alarm, ultra-high temperature trip, sensor fault detection, door status monitoring, black box.