Đồng hồ nhiệt độ cuộn dây biến áp Dalian Shiyou BWR-04A(TH) BWR-04J(TH) BWR-04AJ(TH) BWR-04AA(TH) BWR-04JJ(TH) BWR-04YJ/XMZ-Y1 BWR-04Y1/XMZ-Y1 04 Rain cover BWR-04BJ(TH)

 BWR-04 (TH) series transformer winding thermostat is a special instrument for transformers designed with the principle of additional temperature rise. The instrument has good protection performance, can work normally in outdoor conditions, and can be widely used in temperature detection and control of transformers and other equipment; the instrument is equipped with four to six sets of adjustable control switches, which can be used for transformer cooling systems according to needs. Control and signal alarm, over temperature trip, etc. Through the temperature transmitter or Pt100 platinum resistance embedded in the primary meter, the DC (4-20) mA current signal or Pt100 platinum resistance resistance signal corresponding to the temperature value is output for the computer system and the secondary instrument to achieve no Human power station management.

• Temperature transmitter power supply: AC/DC (100-260) V, frequency 50Hz;
• Output signal: passive or active DC (4-20) mA current signal;
• Working conditions: ambient temperature (-40～+55)℃, relative humidity≤95%RH;
• Measuring range: (0～150)℃;
• Accuracy: Class 2.0 (according to the standard JB/T8450-2005);
• Switch performance: Four sets of adjustable switches, all of which can be set arbitrarily within the full range (up to 6 sets of switches according to user requirements);
• Switching action point: K1=50℃, K2=75℃, K3=100℃, K4=120℃;
• Switching action error: ±2°C, switch switching difference: (6±2)°C;
• Switch rated power: AC220V / 5A;
• Temperature bulb size: Φ14, the insertion depth is not less than 150 mm;
• Installation thread: (M27×2)mm or (M33×2)mm;
• Capillary length: 6m, up to 18m can be made according to user requirements;
• Protection class: IP55

Mounting bracket diagram

Basic configuration

 
How to choose a converter

1. Find: IP value

Determine the transformer ratio and the rated current of the transformer. Such as: transformer ratio: 1500A : 6A ; transformer rated current: 600A , calculation: 600A × 6A/1500A=2.4A , namely: Ip=2.4A . Check the table first: press the B button.

2. Find: Is value

The copper oil temperature difference is given by the transformer factory: ΔT . For example: ΔT=20 o C , look up table 2 to get: Is=1.04A .

3. Find the K value

Adjust the switch gear key selection. Known: Is=1.04A , Ip=2.4A , namely: Is/Ip=1.04A/2.4A=43% .

Look up the table and get K=4 , select the 4th gear, and turn the adjustment switch to the 4th position.