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Salient Features:
- Circuit Breakers are fitted with Crompton Greaves Vacuum Interrupters
- For ease of operation, the breaker carriage is of horizontal isolation, horizontal withdrawl type.
- Can be offered for Outdoor/Indoor application
- Fully type tested as per IS : 13118(1991) & IEC-60056
- Can be offered with manually charged/motor charged spring closing mechanism
- LIght weight, designed to have easy access to internal parts
- Low noise operation
- Can be offered in fixed/draw out execution
- Metal Clad Construction.
- Degree Of Protection- IP4X.for indoor application. & IP54/55 for outdoor applications.
- Metering & protection- with numerical/static/electromagnetic relays & meters as per customers requirement.
- Horizontal racking in /out of breaker from test to service position & vice -versa.
- Busbar compartment.
- Adequate height for cable compartment.
- Fully type tested at CPRI as per IEC-62271-100-2003/IEC-62271-200-2003/IEC-60694-2002.
Technical Specifications:
- Applicable Standard: IS : 13118(1991) - IEC 60056 .
- Execution: Outdoor/Indoor, Metal Clad Cubicles.
- Closing Method: Manual closing, Motor closing.
- Rated Voltage and Insulation: 3.3KV/6.6KV/11KV/12KV.
- Interrupting Current: 20/26.3 KA.
- Frequency: 50 Hz.
- Rated Maximum Current of the feeders: 1250 A.
- Opening Time: Less than 35 ms.
- Closing Time: Less than 50 ms.
- Type of VCB Offered: Indoor and Outdoor.
- Short Circuit Level: Upto 26.3KA for 11KV.
- Auxillary Contact Arrangements: 8NO & 8NC max.
- Basic Insulation Level: 28/75/95 KVp.
- Operating Mechanism: Hand charged spring closing or motor charged spring closing with AC/DC motor.
- Operating Duty: 0-3 min, CO-3min-CO.
- Variation: Outdoor version available as (1) - Skid Mounted Field Switch. (2) - Kiosk Type. (3) - Packaged substation panels with 3 or more VCB's tailored to specific needs.
- Protection: (1) - Standard: Overload + Shortcircuit + Earth fault. (2) - Optional: Earth Leakage, Motor Protection, Max Demand, etc. (3) - Data Logger.
- Metering: (1) - Standard: Ammeter. (2) - Optional: V, KW, KWH, KVA, KVAR, VARH, PF, etc.
- Rated Maximum Current of the Busbar : 2000 A.
- Rated Short-Time Current for 3 Second : 25 KA.
- Rated Short Circuit Breaking Current (Effective Value) : 25 KA.
- Rated Short Circuit Making Current (Peak Value) : 62.5 KA.
- Rated Operating Sequence : O-0.3sec-CO-3min-CO.
- Power frequency withstand voltage(effective value) : 28 KV.
- Lighting Impulse Withstand Voltage (Peak Value) for 75 KVP : 75 KV.
- Panel dimensions for 75 KVP : 630mm(approx,) 1735mm(approx,) 2450mm(max).
- Weight of Panel with Breaker : 700-1000Kg.
- Special Features: Outdoor breakers for substations are manufactured with vacuum interrupters encapsulated in polycrete material which is having better weather resistance. They are also manufactured with porcelain clad vacuum interruptors.
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