Deskripsi
Transformer Oil Flow Relay Indicator
The temperature of ambient :-30°C- +40°C;
Relative humidity: When the air temperature is +25°C,the relative humidity shall not exceed 90%;
The oil temperature not exceed 90°C;
The installation place around which any violent vibration and jolt are not exist;
The parameter (i.e. the action character) of oil flow quantity of indicate shall be in accordance with that of the transformer cooling system.
Main technical parameter:
The main specification and technical parameters of indicator are shown in table:
|
Type |
Normal Dia. Of connecting mm | Rated working quantity of flow m³/h | Action oil flow quantity | Return oil flow quantity | Rates of contact |
| YJ1-50/20 | 50 | 20 | 15±10% | 11±10% |
交流 AC
380V 3A
220V 5A |
| YJ1-80/40 | 80 | 40 | 30±10% | 22±10% | |
| YJ1-80/45 | 80 | 45 | 30±10% | 18±10% | |
| YJ1-100/60 | 100 | 60 | 30±10% | 20±10% | |
| YJ1-100/80 | 100 | 80 | 60±10% | 40±10% | |
| YJ1-100/90 | 125 | 90 | 68±10% | 50±10% | |
| YJ1-125/80 | 125 | 80 | 60±10% | 40±10% | |
| YJ1-125/150 | 150 | 150 | 100±10% | 75±10% | |
| YJ1-150/40 | 150 | 40 | 30±10% | 22±10% | |
| YJ1-150/60 | 150 | 60 | 45±10% | 30±10% | |
| YJ-150/80 | 150 | 80 | 60±10% | 44±10% | |
| YJ-150/120 | 150 | 120 | 90±10% | 60±10% | |
| YJ-150/125 | 150 | 125 | 94±10% | 63±10% | |
| YJ-150/135 | 150 | 135 | 101±10% | 75±10% | |
| YJ-150/145 | 150 | 145 | 108±10% | 72±10% | |
| Note：For the technical parameter of special ordering product, please according to its certificate. | |||||
Working principle of Indicator oil flow:
After the oil pump of transformer cooling system starts, the oil flow will circulate. When the quantity of oil flow increase to the action oil flow quantity, the movable plate of the Indicator oil flow will be pushed to rotate to the limit position, the Indication part will rotate synchronously, the point will turn to corresponding position ,the normal open contact of micro operation switch will close, normal operation signal will be initiated. When the quantity of oil flow decreases to the return oil flow quantity (or does not reaches to the action oil flow quantity), the movable plate will return to the original position by means of the action of the spring, and the normal open contact of the micro operation switch will open and the normal close contact will close, the fault signal will be initiated.
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