Loading Port:Qingdao
Payment Terms:TT OR LC
Min Order Qty:1 unit
Supply Capability:400 unit/month
1. Outdoor 145kV AC Bus and Line Disconnectors(ISOLATOR)
2. KEMA test report
3. ISO quality certificate
4. Good quality
General introduction :
GW4-40.5/72.5/126/145/170/252 Ⅲ Series, two columns, horizontally rotating type, HV, AC, disconnector
Product classifications and Main Technical Specifications :
1), Product classification
Voltage level: 40.5kV, 72.5kV, 126kV, 145kV, 170kV, 252kV.
Current level: 630A,1250A, 2000A, 2500A,3150A, 4000A.
Auxiliary earthing switch type: none earthing switch, left earthing switch, right earthing switch, double earthing switches.
2), Main Technical Specifications
Technical Specifications | Product Type | GW4-40.5Ⅲ | GW4-72.5Ⅲ | GW4-126Ⅲ |
Rated voltage kV | 40.5 | 72.5 | 126 | |
The rated current A | 1250, 2000, 3150, 4000 | |||
Disconnector | Rated peak withstand current kA | 100, 125 | ||
Rated short-time withstand current (RMS)kA | 40, 50 | |||
Rated short circuit duration s | 4, 3 | |||
Grounding switch | Rated peak withstand current kA | 100, 125 | ||
Rated short-time withstand current (RMS)kA | 40, 50 | |||
Rated short circuit duration s | 4, 3 | |||
Rated short-time power frequency withstand voltage (RMS) kV | to earth | 95 | 160 | 230 |
across open contacts | 118 | 200 | 230+70 | |
Rated lightning impulse withstand voltage (peak) kV | to earth | 185 | 350 | 550 |
across open contacts | 215 | 410 | 550+100 | |
minimum clearance in 1 min power frequency withstand voltage when ground blade closing to live part of disconnector | 53 | 94 | 164 | |
rated terminal static mechanic load N | longitudinal level | 1000 | 1000 | 1000, 1250 |
Horizontal level | 750 | 750 | 750 | |
Vertical force | 1000 | 1000 | 1000 | |
switching micro-capacitance current A | 2 | 2 | 2 | |
switching micro-inductance current A | 1 | 1 | 1 | |
switching busbar for current transfer A (busbar transfer voltage 100V) | 400V, 2500A, 100 times | |||
Radio interference level | less than 500 μV | |||
Mechanical life | 3000 | 3000 | 3000 | |
single pole weight (kg) | 120 | 200 | 260 | |
Note: All applied to an altitude of 2000m | ||||
Technical Specifications | GW4-145Ⅲ | GW4-170Ⅲ | GW4-252Ⅲ | |
Rated voltage kV | 145 | 170 | 252 | |
The rated current A | 1250, 2000, 3150, 4000 | |||
Disconnector | Rated peak withstand current kA | 100, 125 | ||
Rated short-time withstand current (RMS)kA | 40, 50 | |||
Rated short circuit duration s | 4, 3 | |||
Grounding switch | Rated peak withstand current kA | 100, 125 | ||
Rated short-time withstand current (RMS)kA | 40, 50 | |||
Rated short circuit duration s | 4, 3 | |||
Rated short-time power frequency withstand voltage (RMS) kV | to earth | 275 | 325 | 460 |
across open contacts | 315 | 375 | 460+145 | |
Rated lightning impulse withstand voltage (peak) kV | to earth | 650 | 750 | 1050 |
across open contacts | 750 | 860 | 1050+200 | |
minimum clearance in 1 min power frequency withstand voltage when ground blade closing to live part of disconnector | 188 | 221 | 291 | |
rated terminal static mechanic load N | longitudinal level | 1000, 1250 | 1500 | 1500 |
Horizontal level | 750 | 1000 | 1000 | |
Vertical force | 1250 | 1250 | 1250 | |
switching micro-capacitance current A | 2 | 2 | 2 | |
switching micro-inductance current A | 1 | 1 | 1 | |
switching busbar for current transfer A (busbar transfer voltage 100V) | 400V, 2500A, 100 times | |||
Radio interference level | less than 500 μV | |||
Mechanical life (times) | 3000 | 3000 | 3000 | |
single pole weight (kg) | 300 | 326 | 900 | |
Note: All applied to an altitude of 2000m | ||||
