product details

● Switch status display (circuit breaker, handcart, isolation knife, grounding knife, energy storage, etc.) ● Three phase high voltage live indication and locking control

● Heating and dehumidification control (two-way condensation, two-way temperature) ● Heater circuit disconnection alarm ● Communication function

Intelligent dehumidification device

Product Introduction

The intelligent dehumidification device adopts the semiconductor refrigeration dehumidification method, actively sucking the humid air in the enclosed space into the dehumidification duct under the action of the fan. The water vapor in the air is condensed into water after passing through the semiconductor refrigeration mechanism, and then discharged from the cabinet through the water conduit, which can achieve a good dehumidification effect. By reducing the moisture content in the air, both relative and absolute humidity can be lowered simultaneously, with almost no increase in temperature or negative effects caused by temperature differences. This fundamentally eliminates or reduces the occurrence of accidents, and does not accelerate the aging of cabinet components and cabinets due to high temperatures. The intelligent dehumidification device replaces the passive prevention of condensation with active guidance of condensation, effectively preventing safety hazards such as equipment aging, reduced insulation strength, secondary terminal breakdown, material mold, and steel structure corrosion inside the cabinet, ensuring the safe operation of the power grid.

Condensation inside the equipment can cause creepage and flashover accidents, which generally occur in the following situations: first, the humidity in the area is high, the weather temperature changes greatly, the bottom of the switchgear is moist, and some cable trenches even have accumulated water; Secondly, some switchgear is located in the basement with high humidity, and the temperature inside the cabinet, especially near the ground, is lower than the ambient temperature; Thirdly, some equipment is temporarily shut down, and the temperature inside the electrical cabinet is lower than the surrounding environment, making it easy for condensation to form on its surface. In this case, once the power is put into operation, accidents will occur. In order to ensure the safe operation of the power grid system and the long service life, safe and effective use of electrical equipment, the power system has put forward higher requirements for moisture-proof and anti condensation inside the cabinet.

Product Features

Small size, light weight, easy and fast installation;

Switching between automatic and manual dehumidification functions, adjustable temperature and dehumidification start values;

The dehumidification duct actively induces condensation and exhausts gas for heating and dehumidification, effectively achieving comprehensive management of moisture-proof and dehumidification in enclosed spaces of electrical cabinets;

Humidity and temperature sensors take real-time samples 24 hours a day, and if they exceed the set starting value, they will automatically trigger condensation;

The humidity and temperature settings have a memory function and will not disappear when the device is turned off;

Fault display function, which can prompt faults to ensure safe and normal operation;

The dehumidification and condensation pipeline can discharge the condensed water outside the cabinet, and can also collect it outside the cabinet with a liquid storage bag.

The model with C has RS485 communication function and adjustable communication address; And the fault reporting function.

Functional features

1. Temperature and humidity monitoring and display function, dehumidification/low temperature threshold can be set;

2. Quickly reduce the humidity inside the switchgear and allow moisture to be directly discharged outside the cabinet;

3. Low temperature output contact: One passive contact output;

4. Dehumidification control mode: manual/automatic;

5. Communication function and dehumidification fault alarm function.

Display Interface Specification

After turning on, the dehumidification device enters a self check state. After the self check is completed, the left digital tube displays the temperature value and the right digital tube displays the humidity value.

Range of application

1. GIS control cabinet, high and low voltage switchgear, ring main unit, outdoor terminal box, mechanical control cabinet, box type substation, dry-type substation and other electrical equipment;

2. Integrated circuits, silicon crystals, liquid crystal devices, ceramic devices, resistive capacitive components, active devices, connectors, SMD devices, CPU, Moisture resistant storage of computer boards;

3. Moisture resistant management of physical and chemical instruments, experimental materials, and insulation materials, as well as moisture resistant storage of chemicals, drugs, food, fibers, and biological agents.

The working principle of

The series of intelligent dehumidification devices consists of a power system, air supply system, semiconductor cooler, temperature and humidity detection and control circuit, heating circuit, and drainage pipeline.

dehumidification principle

When humid air is sucked in by a fan and flows through a specially designed air duct, it first passes through a semiconductor cooler to cool down and condense. The condensation from the cooler drips into the drainage channel under the action of gravity, and then flows out of the cabinet through a water conduit. After sufficient circulation dehumidification within the set starting value, the humidity of the air inside the cabinet is reduced to below the condensation point, completing the entire moisture-proof condensation heating process. At the same time, the signal acquisition sensor of the intelligent dehumidification device is external, which can accurately collect the true humidity inside the cabinet in real time, ensuring that the intelligent dehumidification device starts dehumidification in advance when the cabinet is about to reach condensation conditions.

Low temperature heating function

When the temperature of the box is lower than the set starting value, the dehumidification device starts the internal heater circuit (the heater is externally connected, with a power of 50-500W), until the box temperature rises to the set starting value plus 5 ℃, and the heater circuit stops working.

RS485 communication function

When the dehumidification device with RS485 communication function receives data from the upper computer, it analyzes the data and immediately replies to the upper computer. One upper computer can connect up to 255 devices.