Electrical Equipment in Tanzania
The electrical equipment of cranes includes current-carrying devices, electric motors, control and protection devices, heating, lighting and other electrical devices. The power supply (current supply) of the crane is carried out using trolleys, a ring current supply and a flexible cable. Depending on the degree of protection (its placement on the crane) from atmospheric precipitation and the category of crane placement, it is recommended to choose electrical equipment in the versions shown in Table. 1. B8. Electric drives of cranes operating in hot shops are made with crane motors having heat-resistant insulation. In all crane electric drives, it is recommended to use a three-phase current with a voltage of 380 and 660 V. At the request of the customer, voltages of 220 and 500 V can be used. For the electric drive of a number of mechanisms, direct current with a voltage of 220 and 440 V can be used. The voltage of control and automation circuits must not exceed 380 V Electrical E...