Milestones Group MILESTONES SWITCHGEARS PVT. LTD MILESTONES ENGINEERING PVT. LTD
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Earthed metallic partitions & shutters
Motor control centres (fixed & draw-out)
Metal clad design
Compact
VCB mounted VCB having imported Siemens Vacuum Interrupted with high reliability
Esplosion vents for all 3 chambers
Service continuity category – LSC2B
   
Construction:
Single busbar air insulated metal - clad switchgear.
Circuit breaker mounted on withdrawable truck.
Simple and rugged shutter mechanism.
Encapsulated feeder connections.
   
Salient features
No separate maintenance trolley required.
Safe and easy truck movement behind closed cubicle door.
Separately padlockable shutter for bus and cable side fixed contacts.
Automatic dropping ramp for facilitating truck removal.
Optional
Wound primary / Torroidal Cts.
Withdrawble / fixed Pts in cable chamber.
Standars
IS 3427 and IS 12729.
IEC 60298 and IEC 60694.
IEC 62271 - 200
 
Personnel safety
All switching operations performed with breaker compartment door closed.
Earthed metallic partitions and shutters prevent contact with live parts.
Individual high voltage compartment tested for Internal arc fault.
 
Tolerance to environment
Full metallic enclosure ensures high resistance to ingress and iterference under all operating conditions.
 
Technical Data
 

Rated voltage (frequency 50Hz)

12 kv

Rated current of feeders

upto 1600 A

Rated current of the busbar

2000a

Rated power frequency withstand voltage (rms) 60 sec.

28 kV

Rated lighting impulse withstand voltage (peak) 1.2/50 microsec

75kV

Rated short circuit breaking current (rms)

26.3 kA

Rated short time current (rms) withstand (3 sec)

26.3 KA

Rated short circuit making current (peak)

66 kA

Internal arc fault withstand capacity (0.1 sec)

26.3 kA

Dimensions (Standard)

Width (mm)

600

Height (mm)

2100*

Depth (mm)

1350*