Vacuum Circuit Breaker

MAX VCBs

MAX Electric offers a wide range of Vacuum Circuit Breaker, which delivers excellent performance. In order to prevent fires and power surges, these circuit breakers are used in areas where electric crisis may occur. These circuit breakers finds application in medium voltage power system. The different types of Vacuum Circuit Breakers offered by us are:

RANGES
  • 6.6kV VCB Indoor Panels
  • 7.5kV VCB Indoor Panel
  • 12 KV VCB Outdoor Roof Bush Panel
  • 11kV Double Bus Bar VCB Panel with dual sequence isolator for each incoming source
  • 11 KV VCB Trolley
  • 22kV Integra Series VCB Panels
  • 33 KV VCB Trolley
  • 36 kV VCB Outdoor Panels
  • Outdoor Panel With TVM Vacuum Circuit Breaker
  • Ring Main Units upto 36kV Indoor & Outdoor

ADVANTAGES
  • Compact and robust design
  • Easy integration in cubicle
  • High safety, reliability and continuity of service
  • Long durability
  • Low-maintenance
  • Low contact transition resistance
  • Up to 10,000 switching operations (M2)
  • Optional: Integrated digital unit

APPLICATIONS

Control and protection of the power supply to motors, transformers, capacitors and other feeder circuits. Designed for indoor / outdoor use and is particularly suitable for
  • Electric power plants
  • Substations
  • Industrial plants
  • Commercial buildings
  • Pumping stations
  • Pipeline stations and
  • Transportation systems.
  • Large infrastructures: Airports, railways, etc.
  • Installation in AIS cubicles
  • Power stations: Wind farms
  • Utilities: Primary distribution substations
  • Industry: Chemical, Iron and steel, automobile, etc.
The VMAX Series VCBs are available at rated voltages of 6.6 to 36 kV, with rated short-circuit breaking capacities from 25 to 40 kA.

SALIENT FEATURES

HIGH RELIABILITY:
Testing is performed by an independent testing team. Fully Insulated Design and all the operations are behind the closed doors.
All components, such as current transformers, voltage transformers and multifunction relays are made of the highest quality materials.
Our new generation design has reduced the number of parts, which reduces the chance of failure.

SAFETY:
Compartment partitions and an automatic shutter system completely isolate live parts.
Comprehensive interlocking mechanisms are used for Safe Operations. MAX VCBs are designed to withstand the huge pressure and burning effect of the arc to withstand in the event of an internal arc fault.

HIGH PROTECTION:
Specially designed Multiple Protection Relays are installed to provide protection, measurement, communications and control functionality.

FLEXIBLE DESIGN FOR EASY INSTALLATION:
Flexible features like Readily extensible, Panels with main circuit and control cable entry from either the top or bottom are available for easy installation. Installation and testing duration are considerably reduced as the panel is tested in the factory and then delivered as a complete unit.

STANDARD TECHNICAL FEATURES OF MAX SERIES CIRCUIT BREAKER PANELS

MAX STANDARD VCB TECHNICAL DATA

TYPE

VMAX6

VMAX7

VMAX12

VMAX17

VMAX24

VMAX36

Rated Voltage (kV)

6.6

7.2

12

17.5

24

36

Frequency (Hz)

50

50

50

50

50

50

Rated Insulation level (1 min) kVrms

20

20

28/36

36

50

70

1.2/50 micro sec. impulse (kV peak)

60

60

75/95

95

125

170

Rated Current A

630/1250/2000

630/1250/2000

630/1250/2000

630/1250/2000

630/1250/2000

630/1250/2000

Rated short time current rating (3 Sec)

16/25/31.5

16/25/31.5

25/31.5/40

16/25/31.5

16/25/31.5

16/25/31.5

Rated short circuit breaking current (kA)

16/25/31.5

16/25/31.5

25/31.5/40

16/25/31.5

16/25/31.5

16/25/31.5

Rated short circuit making current (kA)

40/63/80

40/63/80

63/80/100

40/63/80

40/63/80

40/63/80

Operating Duty

0-3 min-co-3 min-co

0-3 min-co-3 min-co

0-3 min-co-3 min-co

0-3 min-co-3 min-co

0-3 min-co-3 min-co

0-3 min-co-3 min-co

Operating time

< 70ms

< 70ms

< 70ms

< 70ms

< 70ms

< 70ms

Operating Cycles

< 2 Cycles

< 2 Cycles

< 2 Cycles

< 2 Cycles

< 2 Cycles

< 2 Cycles

Note:  The standard specifications vary from time to time as our products undergo continuous developments.




11 KV DOUBLE BUS BAR VCB

11kV DOUBLE BUS BAR VCB PANEL WITH DUAL SEQUENCE ISOLATOR FOR EACH INCOMING SOURCE
11kV Double Bus Bar Vaccum Circuit Breaker


We supply the Double Bus Bar VCB panel according to the customer requirements. This kind of double bus bar VCB panel is so advantage & much worth utilization when you are necessary to take your distribution through or in between two incoming supply source & as well so safe to protect your feeder's by safe interlocking provisions which already equipped inbuilt of the Double Bus Bar Panel

Fully Type tested air insulated, extensible double bus bar switchgear comprises of Horizontal Isolation and Horizontal Draw-out Vacuum Circuit Breaker, Disconnectors, CTs/PTs (as applicable), earthing switch and cable box.


SALIENT FEATURES
  • Fully interlocked VCB, Earthing switch & Disconnector.
  • Motorized disconnector operation (optional).
  • Pressure relief flap for individual HV compartment. Pressure switches can be given on request.
  • Fully insulated / shrouded bus bars & bus connections.
  • Accessibility of compartment:
    • Busbar compartment : Tool based.
    • Cable compartment : Tool based.
    • Switching compartment: Interlock based.
  • Cable box suitable for heat shrinkable PILC/XLPE cables.
  • Provision for mounting firefighting equipment given on request.
  • Loss of service continuity category: LSC2B (as per IEC 62271-200).
  • Partition Class: PM (Metallic) (as per IEC 62271-200).

TECHNICAL DATA

Technical Data of VMAX12 Series 12kV Double Bus bar VCBs

Type

VMAX12

Voltage rating

Up to 15kV

Frequency

50 Hz / 60 Hz

Normal circuit current

Up to 3150A

Normal busbar current

Up to 4000A

Short circuit breaking current

Up to 40kA

Short time rating-Main circuit

Up to 40kA-3sec, 100kA peak

Earth Circuit

Up to 40kA-3sec, 100kA peak

P.F. Withstand voltage

Up to 38kV

Impulse withstand voltage

Up to 95kV peak

Degree of Protection

As required

Applicable Standards

IEC 62271-200 / IEC 62271-100 / IEC 62271-102


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