Auxiliary Relays
MVAA series
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MVAA11- Single element SR contact
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MVAA12- Single element SR-HR contact
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MVAA13- Single element HR contact
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MVAA21- Two element SR contact
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MVAA23- Two element HR contact
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MVAA31- Three element SR contact
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MVAA33- Three element HR contact
MVAJH Series
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MVAJH13- Single element high speed HR contact
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MVAJH23- Two element high speed HR contact
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MVAA13- Single element HR contact
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MVAJS13- Single element high speed SR contact
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MVAJHM13- Single element high speed HR contact
MVAX Series
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MVAX21- Trip circuit supervision
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MVAX31- Trip circuit supervision
| 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
