The scope of application of the intelligent arc suppression device:
1. This equipment is suitable for 3~35KV medium voltage power system;
2. This equipment is suitable for the power supply system where the neutral point is not grounded, the neutral point is grounded through the arc suppressing coil, or the neutral point is grounded through high resistance.
3. This equipment is suitable for power grids with cables as the main body, hybrid power grids with cables and overhead cables as the main body, and power grids with overhead cables as the main body.
Basic functions of intelligent arc suppression equipment:
1. When the device is in normal operation, it has the function of PT cabinet
2. At the same time, it has the function of system disconnection alarm and lock;
3. System metal ground fault alarm, transfer system ground fault point function;
4. Clear the arc grounding device, the system software series resonance function; the bottom voltage and overvoltage alarm function;
5. It has information recording functions such as fault alarm elimination time, fault nature, fault phase, system voltage, open circuit delta voltage, capacitor ground current, etc., which is convenient for fault handling and analysis;
6. When the system software has a single-phase grounding fault, the device can immediately connect the fault to the ground within about 30ms through the special phase-splitting vacuum contactor. The grounding overvoltage is stable at the phase voltage level, which can effectively prevent the two-color short circuit fault caused by single-phase grounding and the zinc oxide arrester explosion caused by the arc grounding overvoltage.
7. If the metal is grounded, the contact voltage and step voltage can be greatly reduced, which is conducive to ensuring personal safety (metal grounding can be set whether the device operates according to user requirements);
8. If used in a power grid mainly composed of overhead lines, the vacuum contactor will automatically close after 5 seconds of device operation. If it is a momentary failure, the system will return to normal. In the event of a permanent failure, the device will operate again to permanently limit the overvoltage.
9. When a PT disconnection fault occurs in the system, the device will display the phase difference of the disconnection fault and output a contact signal at the same time, so that the user can reliably lock the protection device that may fail due to PT disconnection.
10. The device’s unique “intelligent socket (PTK)” technology can comprehensively suppress the occurrence of ferromagnetic resonance, and effectively protect platinum from ignition, explosion and other accidents caused by system resonance.
11. The device is equipped with RS485 socket, and adopts standard MODBUS communication protocol to ensure the compatibility mode between the device and all video surveillance systems, and maintain the functions of data transmission and remote control.
Instructions for ordering intelligent arc suppression device
(1) The customer should provide the relevant rated voltage of the system and the maximum current of the single-phase grounding capacitor of the system as the basis for the design of the equipment;
(2) The size of the cabinet can only be finalized after our engineers design and confirm with the user’s signature.
(3) The customer should determine the functions of the equipment (including basic elements and additional functions), sign the corresponding technical plan, and clearly put forward all special requirements when purchasing.
(4) If other additional accessories or spare parts are required, the name, specification and quantity of the required spare parts should be indicated when ordering.
Post time: Apr-13-2023