Metal pairs supported by external energy are supported only until the current passes through the natural zero. At this stage, a rapid decrease in load density and rapid condensation of metal vapor leads to a very rapid recovery of dielectric properties. In this way, the vacuum interrupter restores the insulating capacity and ability to withstand the transient recovered voltage and finally extinguishes the arc. Since high strength electricity can be achieved in a vacuum even at minimal distances, circuit breaking is also guaranteed when contact separation occurs a few milliseconds before the neutral current passes through. 4.

In addition, the vacuum prevents oxidation and contamination. Therefore, the switch requires minimal maintenance. These characteristics allow switching on and off independently of the operator. This simplicity translates into greater reliability. Design The drive and poles are mounted on a metal frame, which also supports the fixed-mount switch. Compact design ensures durability and mechanical reliability. In addition to disconnecting contacts and hoses with auxiliary circuits, the retractable version is equipped with a chassis for insertion and ejection into a switchboard or enclosure with the door closed.

Vacuum shutdown technology Vacuum contacts are protected from oxidation and contamination. Vacuum breaker built into polymer poles. The shield is protected from damage, dust and moisture. A channel arc in a vacuum is characterized by decomposition over the contact surface and a uniform distribution of thermal stresses on the contact surface. At the rated current of the vacuum interrupter, the arc is always of the diffuse type. The erosion contact is negligible and the number of power outages is very high. As the value of the operated current increases, the electric arc tends to transform due to the Hall effect from a diffuser to a conventional type.

The arc begins to taper at the anode and tends to become sharper as the current increases. Near the affected area there is an increase in temperature followed by thermal contact voltage. To prevent overheating and erosion of the contacts, the arc rotates. As the arc rotates, it is like a moving current with current flowing through it. The special geometry of the helical contacts creates a radial magnetic field in all areas of the arc column centered on the contact circuits. The electromagnetic force is generated automatically and acts tangentially, which causes fast rotation arcs around the contact axis.

This means that the arc is forced to rotate and cover a wider surface area of ​​the solid arc of the contract. In addition to minimizing contact thermal stress, this results in negligible contact erosion and, in addition, allows very high currents to be interrupted short circuit. The rapid limitation of current flow and rapid condensation of metal vapor simultaneously with zero current means that maximum dielectric strength can be restored between quench contacts within milliseconds.

They have been subjected to the tests listed below to ensure the safety and reliability of the device with every installation. Current, mains voltage Voltage Short circuit current Break voltage Short circuit release Contact separation Time Voltage recovery Transient regenerative voltage Current and voltage during single-phase vacuum interruption. Arrangement of the radial magnetic field of contacts with a rotating vacuum arc. Piece tests: Dielectric strength test of main circuits and auxiliary circuits alternating voltage, main circuit resistance measurement, mechanical and electrical functional tests.

Locking devices to prevent incorrect operations and to check the installation, guaranteeing maximum operator safety. Key locking and padlocks allow on and off and/or insertion and ejection. The traction device, when the door is closed, allows the switch to move or turn off in switchboard only when the door is closed.

The insert lock prevents switches from being activated with different rated currents and insert when the switch is on. 7. The drive has a standard set of accessories and spare parts that can be easily specified and ordered. Accessories can be conveniently installed from the front circuit breaker. Electrical connection carried out using connectors. Use, maintenance and operation of the device are simple and require limited use of the device. Drive The mechanical drive is a simple, user-friendly concept and can be customized to suit customer needs with extensive accessories that can be installed quickly and easily.

The drive is a stator type, has a standard anti-interference device and is equipped with a suitable locking device to prevent unauthorized access. Each processing sequence can only be executed if all conditions are met to ensure it executes correctly. To facilitate installation or replacement of accessories, suitable stable hinges are provided at appropriate locations. Very reliable drive due to the very small number of components produced using mass production systems.

Very limited and simple maintenance. Lever for manual spring clutch Terminal block for auxiliary circuits 14. This prevents the circuit breaker from being switched into the frame when the auxiliary circuits are disconnected 19. This prevents the circuit breaker from being switched into the frame when the auxiliary circuits are disconnected 23.

The trigger can be used for both direct current, and for alternating current and is suitable for instant use. In this case, the minimum pulse duration must be 100 ms. It has all the electrical and operating characteristics of a shutter release. 3 Trip Solenoid The trip solenoid is a special degaussing trigger located in the drive. The shutdown solenoid is not an alternative to a second release switch. 4 Trigger Gate Allows remote activation.

This trigger is suitable for instant and continuous use. For instantaneous use, the minimum pulse width should be 100 ms. The constant power trigger is electrically disconnected from unwanted re-switching.

It has all the electrical and operating characteristics of a shutter release. 24. It can be used for remote shutdown, locked in the on position, or to control voltage in auxiliary circuits. The switch can only be turned on using a powered trigger. It allows you to set a trigger with a set and adjustable time.

Using this minimum release is recommended to prevent tripping during a momentary power outage or voltage drop in the trigger supply line. If it is not connected to a power source, the switch is turned on. The electronic delay device must be combined with an undervoltage cut-off with the same voltage as the delay device. Three switch disconnectors and five switch contacts are available with 10 auxiliary contacts as standard and maximum number of electrical applications.

These contacts are either complementary to the position contacts or an alternative to the position contacts located in the switchgear. It also performs a positioning function. 11 Motor control Performs automatic charging of the circuit breaker drive springs. When the switch is turned on, the gear motor immediately recharges the springs. In the event of a power failure or Maintenance box springs can be laid by hand.

The contact is available in one of the following two configurations: Contact Off: The spring signal is not installed. Contact on: Signal is spring loaded. Locking and interlocking Various mechanical and electromechanical interlocking and protective devices. 13 Make sure that the switch and on-off button allows you to use the on and off buttons only with a special tool. 14 Locking the shutter and lock buttons This device allows you to lock the shutter and switch buttons using up to three 4mm padlocks. 15 Locking with a key in the off position Locking is carried out using a special rotary lock.

The non-interruption check is performed in a 20 s cycle between tests. Contact us for approved boat logs. Height. The strength of air insulation is reduced by increasing height, so this must be taken into account when externally insulating the device.

If both switches and some shutdown controls were active, a sequence of shutdown and switchover operations would follow. The over-pump protection device prevents this situation and ensures that after each individual switching on and off it does not trip after switching off. To re-enable, the enable control must be released and then restarted. Production complies with these standards in order to reduce energy consumption, as well as raw materials and waste generation.

This is achieved thanks to all the measures introduced at the high-voltage plant. Impact assessment on environment over the product life cycle, obtained by minimizing energy consumption and total raw material consumption, is specified at the design stage through targeted selection of materials, technologies and packaging. This allows for maximum recycling at the end of life.

Therefore, we recommend these recommendations at the beginning of our operating instructions: Install only switchgear or switchgear. Therefore, we recommend this recommendation at the beginning of our assembly, operating instructions.