Power transformer is a static electrical equipment, is used to a certain value of the AC voltage (current) becomes the same frequency as the other one or more different voltage values (current) device.
2013年9月5日星期四
Fixed panel switchgear, often called the switch board or power distribution panel
Fixed panel switchgear, often called the switch board or power distribution panel. It is a kind of masking the opening panel switch cabinet, the front have a protective effect, back and side can still contact with live parts, protection level is low, can only be used for power supply continuity and reliability requirements of lower air circuit breaker and mining enterprises, as centralized power supply with a transformer room.
Protection type (ie closed) switchgear, means that, apart mounting surface, the other side have been closed up all kind of low voltage switchgear. The cabinet of the switch, control, electric meter monitoring electrical components are mounted on a steel or enclosure made of insulating material, the wall or can be installed away from the wall. Each loop between the cabinet can be no isolation measures can also be used a Voltage stabilizer plate or insulation board isolated. Typically the door and the main switch operation with a mechanical interlock. Another protection type station switchgear (ie the console), the panel is equipped with control, measurement, signaling and other electrical appliances. Protective switchgear is mainly used for process-site power distribution unit.
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