m-Smart VCB panels are a one stop solution to all your medium voltage metal clad switchgear. Combined with novel current sensors, voltage sensors and a comprehensive feeder manager (numerical relay), m-Smart aims to reduce the total cost of ownership.
Current Sensor
Voltage Sensor
Feeder Manager (MF790c)
Embedded Current and Voltage Sensors
Accurate
Embedded current and voltage sensors
Failure free
Current sensors and voltage sensors are a direct replacement to current and potential transformers. When incorporated into Metal clad switchgear it makes your switchgear failure free.
Embedded Current and Voltage Sensors
Metering
Protection
Safe
Current and voltage sensors are designed for both metering and protection, covering all your specification in one design with added benefits.
Protection Class: 5P40
Metering: 0.2s
Feeder Manager (MF790c)
Metering
Protection
Communication
Annunciation
MF790c is a comprehensive numerical relay with in built metering, protection, control, communication and annunciation, covering all your metering and protection schemes.
- 64 energy parameters
- Maximum demand controller
- Cold load pick up
- Trip circuit supervision healthy
Vacuum Circuit Breaker
Spring Operated Mechanism tested for 10,000 operations
Comes with both mid mount cassette type and roll on floor versions
Equipped with all safety interlocks
You LT Chamber is going to be way better
Drag to see the changes
Application
- Capacitor bank switching
- Transformer Protection
- Feeder Protection
Market Segments
- Utilities (primary and secondary)
- Generation
- Industries
- Large Buildings
- Oil & Gas
- Infrastructure
Related Video
| Conventional Switchgear | m-Smart VCB |
|---|---|
| Longer lead time owing to tailormade manufacturing | Readily available as it is has all features in built |
| Cost of ownership is higher | Cost of ownership is lesser |
| Current transformer | Current sensor |
|---|---|
| Requires different CTs/CY Cores for metering & for protection | Same sensor works both for metering and protection (Class 0.2 & Class 5P40) |
| Saturation and associated accuracy issues | No saturation; accuracy not affected even at 40 times the primary current |
| Errors due to residual flux in the magnetic core | No iron core; thus, no accuracy related issues due to residual flux |
| Low efficiency due to core loss component | Better efficiency as no core loss component |
| Dangerous high voltage during unintentional open circuit of secondary | No high voltage hazard during secondary open conditions |
| Voltage Transformers | Voltage Sensors |
|---|---|
| Requires different VTs/VT Secondaries for metering & for protection | Same sensor works both for metering and protection (Class 0.5 & Class 3P) |
| Damage due to secondary short circuits | No such hazards |
| Fuse failure relay required for secondary fuse monitoring | No such needed |
| Damage of PT due to system surges like switching surge, surges due to ferro-resonance, dynamic surges etc. | No damage due to surges/over voltages |
| Voluminous & heavy | Relatively compact and light weight |
| Core heating & associated problems | No such problems |
| Protection & Control | |
|---|---|
| Conventional Switchgear | m-Smart VCB |
| LT chamber has meters, annunciators, push button, selector switch, auxiliary relays, numerical relays and indicators | All the functions are brought into one smart device |
| Need to specify Maximum Demand Control | Maximum Demand Control In build |
| Cold Load Pick up needs to specified specifically | Cold Load Pick up In built |
| Trip circuit supervision (TCS) comes separately | Trip circuit supervision (TCS) in built |
| Service and Spares | |
|---|---|
| Conventional Switchgear | m-Smart VCB |
| Time to clear a breakdown maintenance takes a very long time | Can be rectified within hours |
| Spares are very expensive and take a long lead time | Spares are readily available with stock list at a far affordable price |
| Parameters | 12kV | 24kV | 36kV |
|---|---|---|---|
| Rated Voltage | 12kV | 24kV | 36kV |
| Rated Current | 630A,800A,1250A | 630A,800A,1250A | 630A,800A,1250A |
| Short time current withstand capacity | 25kA | 25kA | 25kA |
| Rated Frequency | 50Hz. | 50Hz. | 50Hz. |
| Power frequency withstand voltage | 28kV(rms) for 1min | 50kV(rms) for 1min | 70kV(rms) for 1min |
| Lightning impulse withstand voltage | 75kV peak | 120kV peak | 170kV peak |
| Rated short circuit breaking current | 25kA | 25kA | 25kA |
| Rated short circuit making current | 62.5kA peak | 62.5kA peak | 62.5kA peak |
| Internal arc withstand capacity | 25kA/1sec | 25kA/1sec | 25kA/1sec |
| Degree of protection for overall enclosure (outdoor) | IP 55 | IP 55 | IP 55 |
| Degree of protection for overall enclosure (indoor) | IP 4X | IP 4X | IP 4X |
| Design ambient temperature | 50̊C | 50̊C | 50̊C |
| Rated insulation level | 12/28/75 | 24/50/125 | 33/70/170 |
| Type of access | Bottom / Top / Side / Rear | Bottom / Top / Side / Rear | Bottom / Top / Side / Rear |
| Site extensibility | Future Extensible Available | Future Extensible Available | Future Extensible Available |
| Loss of service continuity | LSC-2B | LSC-2B | LSC-2B |
| Operating Sequence | O-0.3sec.-CO-3min-CO | O-0.3sec.-CO-3min-CO | O-0.3sec.-CO-3min-CO |
| Circuit breaker type | Roll on floor/Mid mount cassette type | Roll on floor | Roll on floor |
| Breaking medium | Vacuum | Vacuum | Vacuum |
| Operating Mechanism | Spring | Spring | Spring |
| Mechanical life | 10,000 Operations | 10,000 Operations | 10,000 Operations |
| Electrical life at rated current | E2 Operations | E2 Operations | E2 Operations |
| Auxiliary voltage | 24V DC,230V DC,110V DC,220V DC | 24V DC,230V DC,110V DC,220V DC | 24V DC,230V DC,110V DC,220V DC |
| Current sensor ratings or | 60A – 5A to 100A 250A – 20A to 415A 750A – 50A to 1250A |
60A – 5A to 100A 250A – 20A to 415A 750A – 50A to 1250A |
60A – 5A to 100A 250A – 20A to 415A 750A – 50A to 1250A |
| Voltage sensor rating | 11kV/√3 / 2V/√3 | 22kV/√3 / 2V/√3 | 33kV/√3 / 2V/√3 |
| Relevant standards | IS/IEC 62271-1, 100, 200, IEC 60529 | IS/IEC 62271-1, 100, 200, IEC 60529 | IS/IEC 62271-1, 100, 200, IEC 60529 |
