High Voltage 630A 12kv Outdoor Horizontal Type Disconnect Switch Interrupter Disconnector
The following documents were referred to during the preparation of this specification. In case of conflict, the provisions of this specification shall take precedence.
IEC 129:1975: Alternating Current Disconnectors (Isolators) and Earthing Switches
IEC 60694:2002: Common Specifications for High Voltage Switchgear and Controlgear
BS 729: Hot dip galvanized coating on iron and steel articles
IEC62271-102
Isolator (Disconnector) - a mechanical switching device which provides, in the open position, an isolating distance in accordance with Electrical Safety requirements.
SERVICE CONDITIONS
The isolator shall be suitable for continuous operation outdoors in tropical areas at altitudes of up to 2200m above sea level, humidities of up to 90%, average ambient temperature of +30ºC with a minimum of -1ºC and a maximum of +40ºC and heavy saline conditions along the coast.
| Rated Voltage |
27-33kV |
| Material of Fuse Support |
Porcelain |
| Interrupting Current (Asym.) |
6kA |
| BIL(Phase to Ground / Phase to Phase) | 170kV / 180kV |
| Power-frequency Withstand Voltage to Earth (1min) | 70kV |
| Power-frequency Withstand Voltage Phase to Phase (1min) | 80kV |
| Creepage Distance | 660mm |
| Standard | IEC 60282-2,ANSI C37.41,ANSI C37.42 |
| Class | Distribution Class |
| MEMA Type Mounting Brackets | Couple with or not (As per clients' request) |
| Arc-shortening Rod | Couple with or not (As per clients' request) |
| Fuse Link |
Couple with or nor (As per clients' request, please indicate the fuse link rating of need) |
| Material of Fuse Tube | Fiber Glass |
| Material of Contacts | Red Copper with Silver Plating |
| Material of Casting | Brass (or bronze as per clients' request) |
| Material of Terminals | Brass with Silver Plating (or others like tin, as per clients' request) |
| Terminal Type | Parallel groove type ( or eyebolt type,as per clients' request) |
| Other Material | Hot-dipped Galvanized Steel. Stainless Stell 304 |
| Pachage Standard | Carton and Pallet |
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