Milestone Group

MILESTONES SWITCHGEARS PVT. LTD

MILESTONES ENGINEERING PVT. LTD

Milestone Group

Group Companies

Milestone Switchgears

Milestone Engineering

Corporate Journey

	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*