Automatic temperature control device of microcomputer protection switchgear room

• Main Authors: CUI JIEWEI, WU YISHAO, DUAN YANKAI, LYU XIANGKUN, WANG BO, ZHANG QINGBO
• Format: Patent
• Language: English
• Published: 28.01.2015
• Subjects: CONTROLLING; PHYSICS; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

The utility model discloses an automatic temperature control device of a microcomputer protection switchgear room. The automatic temperature control device comprises a control cabinet, and the control cabinet is internally equipped with an air switch, a temperature controller, a first alternating current contactor, a second alternating current contactor, a thermal relay, a temperature sensor and a direct current intermediate relay. The temperature sensor detects indoor temperature and sends a detection signal to the temperature controller, and the temperature controller displays temperature, processes the signal, and controls the start and stop of a fan by controlling on and off of the first alternating current contactor. The thermal relay controls the power supply of a fan motor by controlling on and off of the second alternating current contactor, thus to protect the fan motor and prevent the fan motor from overload or phase loss. The direct current intermediate relay transmits the signal obtained from the first alternating current contactor, the second alternating current contactor and the thermal relay to external equipment, thus to realize remote control and enable operating crews to learn about the device and the operating state of the fan without being present at site.