Application of NTC Temperature Sensors in Distribution Boxes

A distribution box is a cabinet that integrates electrical components for the distribution of electrical energy.

Its role is to distribute and control power to the electrical equipment, the distribution cabinet can also provide power failure protection in case of overload, short circuit and leakage in the circuit.

Distribution box cabinet is installed with a large number of thermal relays, circuit breakers, capacitors and other devices, these devices in the use of the process will produce a lot of heat, if it produces heat can not be emitted in a timely manner, it is possible to burn these devices, and even cause serious consequences of the distribution box cabinet explosion. Therefore, it is necessary to install NTC temperature sensor Therefore, it is necessary to install NTC temperature sensor in the distribution box to monitor its temperature at all times.

When the power distribution cabinet at work, NTC temperature sensor to detect the internal temperature of the cabinet, when the cabinet temperature is too high, servo motor control suction fan blade rotation, the cabinet external air sucked into the cooling device, while the suction fan is connected to the outer side of the dust board, the dust board can effectively filter the cabinet external impurities dust, to prevent the dust from entering the cabinet interior; suction fan blade is connected to the inner side of the moisture-proof board, moisture-proof board on the water-absorbent cotton layer Can absorb the water vapor in the air into the cooling device to keep the cabinet dry, while the cooling fan rotation, the cooling device air into the cabinet, the formation of convection inside the cabinet, accelerate the air flow inside the cabinet, so as to automatically cool down the electronic components in the cabinet.