Load Brake Switches
Vacuum Circuit Breaker
Vacuum Contactor
Compact Unitised Package Substation
Control and Relay Panel
Off Load Isolator
Load Brake Switches
HT AIR BREAK / LOAD BREAK SWITCH – 12KV/24KV/36KV
Indoor High-voltage Air Break / Load Break Switches are based on a modular principle, which is suitable for the power system of 3.6kV to 36kV. They represent an attractive solution as a key breaking current for application in enclosed Switchgear, Ring Main Unit and Compact Substations. In combination with current limiting fuses, Switch fuse unit ensure control over the full range of over load and short circuit currents. It is used for switching the transformers, Capacitors, protecting cables and overhead lines, etc. Load Break Switch has been tested at CPRI.
FEATURES
FEATURES
- Switch can make and break the normal rated current.
- Switch can withstand short circuit making current.
- Mechanism has a quick make-make and quick-break feature and the speed of make and break being entirely independent of the operator.
- The handle is trip free and a trip coil can be fitted if desired.
- Switch is available with Earth Switch for cable earthing with safety interlocking.
TECHNICAL DATA
| Voltage | Type Reference | |||
| Basic Load Break Switch | Load Break Switch + Earth Switch | Load Break Switch + Fuse trip | Load Break Switch + Earth Switch + Fuse trip | |
| 3.3kV/6.6KV | G12S(N) | G12SE(N) | G12SF(N) | G12SEF(N) |
| 12kV | G12S | G12SE | G12SF | G12SEF |
| 24kV | G24S | G24SE | G24SF | G24SEF |
| 36kV | G36S | G36SE | G36SF | G36SEF |
LOAD BREAK SWITCH FUSE UNIT PANEL (INDOOR / OUTDOOR)
Compact modular Load Break Switch fuse Unit Panels are available suitable for Indoor / Outdoor installations. LBSFU Panels are offered with dynamic mimic and extensible on both sides. It meets the special need for Small Industries, Residential Apartments, Commercial Complexes, Hospitals, Educational Institutions, secondary substation, as well as large capacity power transformer.
LBS Panels are offered as single panel or multi line-up panels as well as Ring Main systems. The Ring Main Systems / Multi panel configuration finds application in public and industrial voltage medium voltage distribution networks.
TECHNICAL DATA
| Rated Voltage | 12KV | 24kV | 36KV |
| Rated Current | 630A | 630A | 630A |
| Rated Insulation Level | 28kV /75 kV | 50kV / 125kV | 70 kV / 170 kV |
| Rated Short time current | 26.3 kA | 26.3 kA | 26.3 kA |
| Rated Frequency | 50 Hz | 50 Hz | 50 Hz |
| Rated making current | 65 kAp | 65 kAp | 65 kAp |
| Rated off load breaking capacity | 16A | 16A | 16A |
| Capacitor Switching Current | 25A | 25A | 25A |
| Number of Pole | Three | Three | Three |
| Number of Breaks/Pole | Single | Single | Single |
Vacuum Circuit Breaker
METAL CLAD VACUUM CIRCUIT BREAKERS – 12KV/24KV/36KV
SALIENT FEATURES
- Simple construction, easy to operate.
- VCB has Spring energy stored operating mechanism and it can be operated AC, DC or manual.
- The circuit breaker has high breaking capacity, long endurance, all-round operating function and convenient maintenance.
- VCB mounted on withdrawable truck.
- Suitable for rapid auto-reclosing duty.
- VCB panels are fully compartmentalized & compliance to internal arc as per IEC.
- Emergency trip arrangement without opening the Cubicle door.
- Switching / withdrawal to test / isolated position can be performed with the front door closed.
- Restrike free.
Air Insulated Vacuum Circuit Breakers control all switching duties in medium voltage distribution systems.They represent an attractive solution as a key breaking current for application in enclosed Switchgear, Ring Main Unit and Compact Substations.
APPLICATION
- Power Transformer Protection
- HT Capacitor Bank Protection
- DOL starting of HT Motors
- Generator Protection
- Feeder & Line Protection.
INTERLOCKS
- Interlocks are provided such that breaker closing is prevented in intermediate position between service and test/isolated position.
- Mechanical interlock to prevent truck racking in / out when breaker is in closed position.
- Breaker can be inserted only when control plug & socket is in position.
- Control Plug & socket can be removed only in isolated position
TECHNICAL DATA
| Rated Voltage | kV | 3 . 6 / 7 . 2 / 1 2 | 24 | 36 |
| Rated Current | A | 4 0 0 A t o 2 5 0 0 A | 400A to 2000A | 400A to 2000A |
| Insulation Level | kV / kVp | 1 2 / 2 8 / 7 5 | 24 / 50 / 125 | 36 / 70 / 170 |
| Short time withstand current | kA | 1 3 . 1 / 2 5 / 4 0 | 25 / 40 | 25 / 31.5 |
| Duration | Secs | 3 | 3 | 3 |
| Symmetrical Breaking Current | kA rms | 1 3 . 1 / 2 5 / 4 0 | 25 / 40 | 25 / 31.5 |
| Making Current | kA p | 31.25 / 62.5 / 100 | 62.5 / 100 | 62.5 / 78.75 |
| Opening time | Secs | < 50 | < 50 | < 50 |
| Closing time | Secs | < 75 | < 75 | < 75 |
| Rated Frequency | Hz | 50 | 50 | 50 |
| W x D x H | Mm | 800x1750x2100 | 1000x1750x2100 | 1200x2325x2100 |
| Duty Cycle | — O-0.3 Sec–CO–3 min–CO — | |||
| Enclosure Degree of Protection – Indoor – Outdoor | IP 4X IP 55 | IP 4X IP 55 | IP 4X IP 55 | |
Vacuum Contactor
AC HIGH VOLTAGE VACUUM CONTACTOR – 3.6/7.2/12KV (GVC3 SERIES)
GVC3-7.2
3.6/7.2KV – 160A to 630A
VACUUM CONTACTORS are suitable for the operational switching of AC loads in indoor systems and can perform the following switching duties
- Switching of three-phase motors in AC-3 and AC-4 operation
- Switching of transformers
- Switching of reactors
- Switching of ohmic loads(e. g. arc furnaces/ neutral earthng)
- Switching of capacitors
GVC3-12
12KV – 160 to 630A
With reversing contactor combinations, only one contactor is required for each direction of rotation, if HV HRC fuses are used for short-circuit. GVC series vacuum contactors are three pole / Single Pole contactors with solenoid operated mechanism for medium voltage switchgear systems.
GVC series are suitable for special applications in process industries, like inching operation, forward /reverse action.
Versions
- 3.6KV/7.2KV & 12 KV upto 630 Amps
- GVC–3XX for Three Pole fixed which can be supplied, with a fuse tripping arrangement
- GVC–1XX single-pole fixed for neutral earthing of the star transformers the transformers
- Withdrawable with cubicle enclosure can be supplied
- Fully drawout type contactor
- Mechanical Interlock for forward and reverse operations
- Mechanically latched contactor
Application
- Conveyor and lift systems
- Pump stations
- Systems for reactive-power
- compensation for branches of industry viz Mining, Steel, Gas, Paper & Cement
- Reliable arc quenching
- Suitable for high switching frequency
- Maintenance free and long life
- Low chopping current
- Suitable for fuse in mobile-machine mounted equipements
TECHNICAL DATA
| MODEL | GVC3-7.2 | GVC3-12 | |||
| Rated Voltage | kV | 7.2kV | 12kV | ||
| Rated Current | Amps | 630 | 630 | 400 | 630 |
| Rated Frequency | Hz | 50 – 60 | 50 – 60 | ||
| Rated Breaking capacity | Amps | 3200 | 5040 | ||
| Rated making current | Amps | 4000 | 6300 | ||
| Short time current carrying capacity | Amps | 8800 / 1 sec | 10000 / 1 sec | ||
| Rated capacitor breaking current | Amps | 400 | 400 | ||
| Rated insulation level (B.I.L) | kV | 7.2 / 20 / 60 | 12 / 28 / 75 | ||
| Switching frequency | Times/Hour | 120 | 120 | ||
| Mechanical Life | Ops. | 1000000 | 1000000 | ||
| Electrical Life (AC-with make/break) | Ops | 100000 | 100000 | ||
| Weight | Kgs | 35 | 40 | ||
| Type of mechanism | – | Solenoid Coil with latching mechanism | |||
Compact Unitised Package Substation
Control and Relay Panel
Tab Content
Off Load Isolator