Kyungdong Electric
Kyungdong Electric
Air Insulated Auto Sectionalizing Switches
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Description
The self-contained Combination AISS combines a newly developed AISS which adopts a CT base insulator patented by Kyungdong Electric, with a current limiting fuse in order to provide user convenience. It is highly efficient for creating package panels.
■ Specifications
| Rated voltage | 25.8㎸ | Rated breaking current | 900A |
|---|---|---|---|
| Rated frequency | 60㎐ | Rated closing current | 15㎄ Asym |
| Rated current | 200A | Power frequency withstand voltage | 50㎸/ 1 min |
| Rated short time current | 15㎄ Instantaneous Asym | Impulse withstand voltage | 125㎸(1.2X50㎲) |
| 10㎄ 1 second Sym | Inrush current restraint time | 0.5, 1.0 sec | |
| 3.5㎄ 10 second Sym | Rated control voltage | DC24V(AC220V Charing) | |
| Minimum operation current | Phase | 10, 20, 30, 50, 70, 100, 140, 200A, BLOCK | |
| Ground | 5, 10, 15, 25, 35, 50, 70, 100A, BY-PASS | ||
| LA rating | 18㎸ 2.5/5㎄ | Current limiting fuse rating | 24㎸ 5~200A |
| Product weight (excluding fuse) | 76㎏ | Applied standards | KEMC 1126(2007. 8) |
■ Product Attributes
The built-in current transformer base insulator is a product with a simple structure and light weight, in which a current limiting fuse is attached to an AISS that uses a base insulator newly developed by our company. It is a Combination AISS for package switchgears (Patent 10-0875518).
The distance between phases is 320㎜, large enough to install a high-capacity fuse.
It adopts a polymer base insulator and is light weight.
Production orders are also taken for products equipped with porcelain LA (Dimensions are identical to that of polymer LA type.).
■ Operation Functions
Overcurrent Protection
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.
Charging Trip
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
Prevents malfunction by restraining the inrush current from the transformer or motor.
Overcurrent Lock
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.
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.
■ Specifications
| Specifications | 25.8㎸ | Rated breaking current | 900A |
|---|---|---|---|
| Rated frequency | 60㎐ | Rated closing current | 15㎄ Asym |
| Rated current | 200A | Power frequency withstand voltage | 60㎸/ 1min |
| Rated short time current | 15㎄ Instantaneous Asym | Impulse withstand voltage | 150㎸(1.2X50㎲) |
| 10㎄ 1 second Sym | Inrush current restraint time | 0.5, 1.0 sec | |
| 3.5㎄ 10 second Sym | Rated control voltage | DC24V(AC220V Charing) | |
| Minimum operation current | Phase | 10, 20, 30, 50, 70, 100, 140, 200A, BLOCK | |
| Ground | 5, 10, 15, 25, 35, 50, 70, 100A, BY-PASS | ||
■ Product Attributes
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.
Control box
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).
Operating function
Operating function
■ Dimensions
