



QYW-CQ series intelligent multi-function Protector
QYW-CQ series intelligent multi-function protector is a special protection device with fully sealed transformer with RS485 communication function, which can provide the transformer with continuous liquid level monitoring, continuous pressure monitoring, continuous oil surface temperature monitoring, and oil injection and supplement functions such as oil, pressure relief and pressure relief device (optional) with output of live contact. RS485 communication and Modbus-RTU communication can greatly facilitate the power supply department to monitor the operation of the hermetically sealed transformer in real time and diagnose transformer faults. It is suitable for intelligent hermetically sealed transformers and intelligent box-type substations.
1. Ambient temperature: -45℃~+70℃, working temperature: -45℃~+105℃.
2. Relative humidity: when the air temperature is 25℃, the humidity is not more than 90%.
3. Protection grade: IP65; applicable environment: TH and TA.
4. 4-channel relay output contact capacity: AC 250V 5A; other switch contact capacity: AC 250V 3A, DC 250V 0.3A.
5. Insulation withstand voltage (dry contact): 2000V/min.
6. Installation direction: Installed on the top of the lid, parallel to the lid.

The product provides a variety of color options, specifically described as follows:
| Color card No | Color | Optionality of choice |
| RAL7038 | Agate grey | Default |
| RAL7042 | A Traffic grey A | Optional |
| RAL7035 | Light grey | Optional |