product description

GN19-10 series indoor high voltage isolating switch (hereinafter referred to as isolating switch) is an indoor device with a rated voltage of 10KV and three-phase AC 50Hz.

Conditions of use and installation site

★The altitude does not exceed 1000 meters;

★The ambient temperature is not higher than +40℃, not lower than -30℃;

★When the relative humidity is not more than 90% (+25℃);

★A place without severe vibration, swing or impact;

★The installation site should be free of gas, steam, chemical deposits, salt spray, dust, dirt and other explosive and corrosive substances that seriously affect the insulation and conductivity of the isolating switch.

★The installation site should be free from frequent violent vibrations.

technical parameter

The main structure

One of GN19-10C/400, 630, 1000, 1250 is used as a pillar insulator, and the other is used as a porcelain bushing insulator) three-phase parallel installation, and the conductive part is composed of a contact knife, a static contact, and a contact seat (or conductive rod). A pull rod insulator is connected in the middle of each phase contact knife, and the pull rod insulator is connected with the main shaft installed on the chassis. The main shaft is connected with the connecting rod (prepared by the user) and the CS6-1 (T) type operating mechanism through the handle, and the operating mechanism is linked with the linkage rod to the auxiliary switch.

The conductive part is mainly composed of a contact blade and a static contact. The static contacts are installed on the pillar insulators at both ends. Each phase contact blade is composed of two groove-shaped pictures. It not only increases the heat dissipation area of the contact blade, but also helps to reduce the temperature rise. Moreover, the mechanical strength of the contact blade is improved, and the dynamic stability of the switch is improved. One end of the contact blade is installed on the static contact through a shaft pin (bolt), and the other end of the contact blade is detachably connected to the static contact, while the The contact pressure of the contact blade is maintained by contact springs at both ends.

Bottom frame assembly: It is composed of the bottom frame spindle and the limit plate (stop). The limit plate is mainly used to ensure the required end position when the conductive contact knife is "opened" and "closed".

installation and adjustment

★Preparatory work before installation

★Open the packing box, check whether the product and accessories are complete, and whether the product is damaged during transportation and storage

★Remove the dust and dirt of the product, carefully wipe the grounding part and surface of the insulator and the chassis

★Apply industrial petroleum jelly to all mechanical wipes

★Isolating switch and manual mechanism can be installed vertically, horizontally or obliquely in the switch cabinet or on the wall.

★The installation height of the isolation switch is generally 2.5-6 meters (distance from the isolation switch shaft to the ground) for the installation position of the manual mechanism, and the distance from the handle fulcrum to the ground is 1-1.3 meters.

★After installation, the rotation angle of the handle of the CS6-1 hand force mechanism should match the rotation angle of the main shaft when the GN19-10C isolating switch is opened and closed. The adjustment process is carried out as follows.

★The connecting rod connecting the isolating switch and the hand force mechanism is composed of a connecting piece and a 3/4 gas pipe (provided by the user). Both ends of the rod are connected with the connecting piece, and the connecting piece at one end can adjust the length of the connecting rod through the bolt. The length of the tube is determined by the position of the hand-operated mechanism and the isolating switch. If the output arm of the hand force mechanism and the crank arm on the main shaft of the isolation switch are not on the same plane, the connecting rod can be bent to make the switch and the mechanism reach the correct connection, and the length of the bolt can be adjusted at the same time.

★According to the adjustment requirements, determine the initial angle of the crank arm of the main shaft of the isolating switch, then drill holes and insert the positioning pins to fix the crank arm.

★CS6-1 manual mechanism can be adjusted through different connection holes on the fan-shaped plate in the manual mechanism to adapt to the start and end positions of the isolation switch from the closing position to the opening position.

★ After the isolation switch is adjusted, perform 3-5 operations, and no jamming or other abnormal phenomena that hinder its action are allowed. ★When the handle of the operating manual mechanism is up, the isolation switch should be in the closed position, and when the handle is down, it should be in the open position. When in the opening and closing position, the mechanism positioning pin should reliably lock the handle to avoid misoperation.

★The shortest distance of the fracture of the same pole after the disconnector is opened shall not be less than 50mm.

★When the action of the auxiliary switch does not meet the requirements, the position of the hole on the link arm can be adjusted to make the contact of the auxiliary switch close accurately. Even when the manual force mechanism reaches the opening position, the normally open contact of the auxiliary switch should be in the closed position.

★The signal indicating the opening of the isolating switch by the auxiliary switch should be given after the contact knife of the isolating switch has passed 75% of its full stroke, and the signal indicating the closing position of the isolating switch should be given after the contact knife of the isolating switch is in contact with the contact. given.

★The grounding wire must be in good contact, and the grounding loop resistance must not exceed 3 ohms.

★The contact between the terminal and the busbar connection must be good, and the fixing is reliable to avoid the mechanical stress from the busbar.

★The insertion depth of the screws fixing the isolation switch on the wall should not be less than the following requirements: 90mm for brick wall, 75mm for cement

★The contact between the contact blade and the static contact should be good, and the normal pressure of the pressure spring on the contact surface should reach 392±39.