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Company Directory > Electronics & Electrical > Power Transformers >

Vijai Electricals Limited

Roorkee, Uttaranchal

IndiaMART Member Since: 2009
Products [21]
Mobile: +(91)-9368002152

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Other Products

Medium Voltage VCB Kiosk

Totally enclosed simple in construction and easy to operate
VCB can be fixed (or) draw out type
Mechanism matching VI performance of M₂ class (10,000) operations
VTs/PTs and relay control panel are inbuilt
Power supply can be taken through roof bushing (or) cable box (or) combination of both
Minimum maintenance
Enclosure tested for IP55
Motor wound spring charged mechanism with charging time of <10 sec
Mechanism suitable for fast auto reclosing duty
Series trip coil

Technical Parameters :

Description

12kV

Rated current
Insulation level
   1 min.P.F.withstand voltage (wet)
   1 min. P.F. withstand voltage (dry)
   Impulse withstand voltage
Rated short time
   Withstand current (1 or 3sec)
   Rated short circuit breaking current
   Rated short circuit making current
   Opening time
   Closing time
   Rated duration of short circuit
   Rated operating duty cycle
Contact life
   Mechanical
   At load current
   At full short circuit current

630/800A

28/35 kV rms
28/35 kV rms
75 kV peak

25 kA rms
25 kA rms
62.5 kA peak
35+5 ms
45+5 ms
1 or 3 sec
O-0.3s-co-3min-CO

30,000 operations
20,000-30,000 operations
100 operations

Vacuum Interrupters

The state of the art vacuum interrupter manufacturing facility of 12 kV & 36 kV class for use in vacuum switchgear, consists of ultra clean rooms of class 100 and vacuum processing furnaces etc., with complete test facilities.

Technical Parameters :

Description

Rated Voltage
Rated Current
Insulation Level
Power frequency withstand voltage
Impulse withstand voltage
Rated short time withstand current
Rated short circuit breaking current
Rated duration of short circuit
Rated operating duty circle
Contact Life
Mechanical
At load Current
At full short circuit

Up to 36 kV rms
Up to 2500 A

Up to 70 kV rms
Up to 170 kV peak
Up to 40 kA rms
Up to 40 kA rms
3 sec
O-0.3 sec-CO-3min-CO

30,000 operations
20,000-30,000 operations
100 operations

EHV Dead Tank SF6 Circuit Breakers

Salient Features :

Improved puffer type interrupter
Reduced operating mechanism energy requirement
Rotary seals
Higher reliability, safety and simplicity of design
Minimum maintenance, servicing and installation time
Compact and reliable hydro-spring mechanism
Higher seismic stability (low center of gravity)
Totally earthed tank - higher safety
Conform to class M₂ & C₂

Technical Parameters :

Description	245 kV Live Tank SF₆ Circuit Breaker	420 kV Live Tank SF₆ Circuit Breaker
Number of breaks / phase Type of operation Operating mechanism Rated Voltage Rated normal current Rated frequency 1 min. power frequency withstand voltage Switching impulse withstand voltage Lighting impulse withstand voltage Rated short circuit breaking capacity First Pole to clear factor Operating duty Peak short circuit withstand Current Total break time	1 3 pole gang operated Hydro – Spring 245 kV rms 2500 A 50 Hz 460 kV rms Not Applicable 1050 kV peak 40 kA rms 1.3 O-0.3sec-CO-3min-CO 100 kA peak 60 ms	1 3 pole gang operated Hydro – Spring 420 kV rms 3150 A 50 Hz 520 kV rms 1050 kV peak 1425 kV peak 50 kA rms 1.3 O-0.3sec-CO-3min-CO 125 kA peak 60 ms

EHV Live Tank SF6 Circuit Breakers

salient features :

simplicity, higher reliability and safety of design
hybrid interrupter design for 145 kv breaker and improvised puffer type interrupter for 245 kv breaker
reduced operating mechanism energy requirement
small amount of sf₆ gas
rotary seals
minimum maintenance, servicing and installation time
higher mechanical endurance and very low probability of re-striking
conform to class m₂ & c₂
compact and reliable hydro-spring mechanism

technical parameters :

description

145 kv live tank sf₆ circuit breaker

245 kv live tank sf₆ circuit breaker

number of breaks / phase
type of operation
operating mechanism
rated voltage
rated normal current
rated frequency
1 min. Power frequency withstand voltage
lighting impulse withstand voltage
rated short circuit breaking capacity
first pole to clear factor
operating duty
rated peak short circuit withstand current
total break time

1
3 pole gang operated
hydro – spring
145 kv rms
2000 a
50 hz
275 kv rms

650 kv peak

40 ka rms

1. 3
o-0. 3sec-co-3min-co
100 ka peak

60 ms

1
3 pole gang operated
hydro – spring
245 kv rms
2500 a
50 hz
460 kv rms

1050 kv peak

40 ka rms

1. 3
o-0. 3sec-co-3min-co
100 ka peak

60 ms

Other products & services we offer

Aluminium Conductor

Cable

Vijai Electricals Limited

Switchgears (3)

Transformers (12)

Other Products (6)

Other Products

Medium Voltage VCB Kiosk

Vacuum Interrupters

EHV Dead Tank SF6 Circuit Breakers

EHV Live Tank SF6 Circuit Breakers