Overcurrent is blocked according to a VI characteristic curve that is maintained for 3 seconds at 1.5 times the minimum operating current correction value.
Momentary operation of the backup protection device enables an automatic trip while the fault current is removed (Does not open when AISS is in normal operation). This function separates the fault current automatically by opening the AISS.
Inrush Current Restraint
Prevent malfunction by restraining the inrush current from the transformer or motor.
The switch locks when abnormal rating lock current (800A) occurs. This function automatically separates the fault section by opening the AISS after blocking the backup protection device.
Type-2: Air-Insulated Auto-Sectionalizing Switches(AISS)
Kyungdong Electric's Air-Insulated Auto-Sectionalizing Switch is the first indoor type switch developed in Korea with its brand name registered as AISS. It cooperates with the backup protective device and blocks the fault section automatically. It is installed on the customer's faucet penetration point in which the load capacity of the substation CB or recloser is below 4,000kVA (special load 2,000kVA) on a 22.9kV-y distribution line.
Base insulator with a built-in current transformer
This compact, light-weight base insulator newly developed by Kyungdong dramatically reduces the size and weight of the AISS. It is small enough to install in a space for general LBS (Patent Application No. 10-2008-0046262)
Manual operating mechanism
This product offers convenient manual operation at any place by simply fixing the cable without requiring a separate operating mechanism.
This product is designed so that it can be directly attached to the switchboard door, offering convenient management and control of the AISS operating status. Its push-type button correction tap allows the user to easily correct and check the current (Utility Model Registration No. 0182617)