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Company Directory > Electronics & Electrical > Switches, Sockets & Relays >

Vijai Electricals Limited

Roorkee, Uttaranchal

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

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Products & Services

Switchgears

EHV Gas Insulated Switchgear

Salient Features :

Only very small space is required as compared to conventional air insulated switchgear
Modular construction
Minimum maintenance
Plug- in type cable terminations
Hermetically sealed enclosures
Mechanism is of M₂ class
Hydro spring operating mechanism for circuit breaker
Each section of SF₆ gas is compartmentalized with insulating barrier between enclosures and sealed with O-Rings
No environmental influences
Electrical interlocking systems are equipped for the purpose of protecting the operator and safe operation of main circuit
Gas section of circuit breaker is provided with dual alarm systems
Gas monitoring is available from the control board easily
Compatible to remote operation
Full safety to operator

Technical Parameters :

Description	245 kV GIS	420 kV GIS
Rated voltage 1 min. power frequency withstand voltage Rated lighting impulse withstand voltage Rated switching impulse withstand voltage Rated current - Busbar - Line Rated current frequency Circuit Breaker Rated short circuit breaking current Rated short circuit breaking current Break time (max) Type of drive Opening time Closing time (max) First pole to clear factor Current transformer	245 kV rms 460 kV rms 1050 kV peak Not Applicable 3150 A Up to 2500 50 Hz 50 kA rms 125 kA peak 40 ms Hydraulic-Spring 30 ms 100 ms 1.3 As per customer requirement	420 kV rms 520 kV rms 1425 kV peak 1050 kV peak 4000 A Up to 3150 50 Hz 50 kA rms 125 kA peak 40 ms Hydraulic-Spring 30 ms 100 ms 1.3 As per customer requirement

Medium Voltage Gas Insulated Switchgear

Salient Features :

Only very small space is required as compared to conventional air insulated switchgear
Minimum maintenance
Three phases enclosed in tubular mild steel enclosures
Vacuum interrupters are in triangular formation
Plug in type cable terminations
Modular construction
Integral earthing
Hermetically seated enclosures
Separate panel for busbar earthing and voltage transformers
Conventional epoxy resin instrument transformers.
Motor/manual operated disconnectors
Compatible to remote operation.
Full safety to operator
Mechanism is of M₂ class
Motor wound spring charged mechanism with charging time of < 10 sec
Manual spring charging facility

Technical Parameters :

Description

Rating

Rated Voltage
1 min. Rated power frequency withstand voltage
Rated lighting withstand voltage
Rated frequency
Rated bursar current
Rated feeder current
Rated short time withstand current for 3sec
Rated short circuit breaking current of circuit breaker Rated short circuit making current of circuit breaker
Rated operating sequence
Closing time
Opening time
Insulating gas
Current transformer

36 kV rms
70 kV rms
170 kV peak
50 Hz
Up to 3150 Amps
Up to 2500 Amps
25 kA rms
25 kA rms
62.5 kA peak

O-0.3sec-CO-3min-CO
55+5 ms
40+5 ms
SF₆
As per customer requirement

Medium Voltage Vacuum Switchgear

salient features :

mechanism matching vi performance of m₂ class
factory assembled, ready to install.
compact size
motor wound spring charged mechanism with charging time of <10 sec.
mechanism suitable for fast auto reclosing duty.
manual spring charging facility
available optionally with 2 trip coils
series trip coil.

technical parameters :

description	12kv o/d&1/d vcb	36kv o/d vcb
rated voltage rated current insulation level 1 min. P. F. Withstand (dry) 1 min. P. F. Withstand (wet) impulse withstand rated short time withstand current (1or3 sec) rated short circuit breaking current rated short circuit making current opening time closing time rated operating duty circle contact life mechanical at load current at full short circuit current	12 kv 800/1250 a 28 kv rms 28 kv rms 75 kv rms 25 ka rms 25 ka rms 62. 5 ka peak 35+5 ms 45+5 ms o-0. 3sec-co-3min-co 30,000 operations 20,000-30,000 operations 100 operations	36 kv 1600 a 70 kv rms 70 kv rms 170 kv peak 25 ka rms 25 ka rms 62. 5 ka peak 40+5 ms 55+5 ms o-0. 3sec-co-3min-co 30,000 operations 20,000 - 30,000 operations 100 operations

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