Product Description
Megawin railway vacuum circuit breakers (VCB) and vacuum interrupters (VI) come with a well proven magnetic actuator mechanism and electronic controller that eliminates the number of moving parts, making them robust, reliable and essentially maintenance free.
Product Features
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Magnetic actuator mechanism tested 100,000 operations.
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Solid insulation, UV resistant.
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Vacuum interrupters are porcelain clad
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Designed for voltage classes of 25kV
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Fully type tested for E2 class
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Suitable for both structure & pole mounted applications
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Equipment tested for 250 kVp impulse and 95 kVrms power frequency withstand voltage
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Successfully cleared for line charging, cable charging, capacitor switching and out of phase breaking current
Advantages
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Robust and maintenance free design
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Higher operating life
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Easy to install
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Time proven, safe and reliable
Application
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AC Transaction application
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Suitable for pole mounted application in metro railways
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Suitable for line charging, cable charging, capacitor switching and phase opposition application
| Model | VCB | VI | ||
|---|---|---|---|---|
| Parameter | Railway VCB | Metro VCB | Railway VI | Metro VI |
| Rated System Voltage | 27.5kV | 27.5kV | 27.5kV | 27.5kV |
| Voltage rating class – Indian Railways insulation level | 52kV | 52kV | 52kV | 52kV |
| Rated continuous Current | 2000A | 2000A | 1600A | 1600A |
| System Frequency | 50Hz | 50Hz | 50Hz | 50Hz |
| One-minute Power Frequency Voltage withstand level | 95kVrms | 95kVrms | 95kVrms | 95kVrms |
| 1.2/50micro-second Impulse Voltage withstand level | 250kVp | 250kVp | 250kVp | 250kVp |
| Insulation | 1 | 1 | 1 | 1 |
| Rated short time withstand current | 20kA / 3 Sec | 20kA / 3 Sec | 8kA / 3 Sec | 8kA / 3 Sec |
| Rated symmetrical short circuit breaking capacity | 20kA | 20kA | Not applicable | Not applicable |
| Rated asymmetrical current breaking capacity | 23kA | 23kA | Not applicable | Not applicable |
| Rated short circuit making capacity | 50kAp | 50kAp | 20kAp | 20kAp |
| Line charging breaking current | 10A | 10A | 10A | 10A |
| Cable charging breaking current | 50A | 50A | Not applicable | Not applicable |
| Capacitor bank breaking current | 150A | 150A | 150A | 150A |
| Control cubicle provided or not | Built-in VCB | Separate panel | Built-in type | Separate panel |
| Approximate Breaker Weight | 310kgs | 310kgs | 310kgs | 280kgs |
| Termination suitable for | ACSR Conductor / XLPE Cables | |||
| Approximate Breaker Weight | 310kgs | 310kgs | 310kgs | 280kgs |
| Type of operating mechanism | Magnetic Actuator Mechanism | |||
| Installation | GI Frame | Pole mounted | GI Frame | Pole mounted |
Applicable Standards
- Complies with IEC 62271-100,IEC 60694
- RDSO specification nos. TI/SPC/PSI/CB/0000 with A&C slip no.1-4
- ETI/PII/167(9/97) with A&C slip No.1
