Insulating Mounting Bracket

Installation Method Instruction

1. Arresters with the Voltage grades of 36kV or below shall be installed with insulating mounting bracket. That’s to say, the arrester is fixed to the intended installation place with the insulating mounting bracket and the disconnector is installed on the lower connector terminals of the arrester. The earth connection applies weaved annealed copper wire with the length of about 250mm to ensure enough insulation distance when departing from the arrester body. Attention shall be paid that composite casting arrester shall be selected without the general insulation method of metal hoop to avoid effects caused on the radial electric filed of the arrester and cause the hidden dangers of accidents.
2. For plant type arresters of 35-110kV(seat type Installation), the disconnector shall be connected with high voltage connecting wires by clips. The disconnector and arrester shall be connected with weaved annealed copper wire(with the length of about 300-600mm and cross-sectional area of 200mm²)
3. For circuit type arresters without gapes of 35-220kV (including protective cable and power plant type suspension installation), the disconnector shall be installed directly on the lower terminal of the arrester and connected with the high voltage wire with duralumin wire of Ø10. The length of the duralumin wire range from 300 to 900mm according to different voltage grades. The duralumin wire can make effective prevention on the self swinging of connecting wire after the disconnection and avoid new hidden accident dangers.
4. The upper screw and lower dimension of the disconnector can be adjusted flexibly according to the connector terminal dimension of the arrester and relevant regulations.