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Vacuum ContactorConcept

The high vacuum is one of the best dielectric media available for switching a high power electrical circuit.It enables designers to have minimum contact separation, low mechanism energy & hence makes thedesign compact. A very compact vacuum interrupter is resin encapsulated to increase the externalcreepage to form an Insulated Arc Interruption Device attached with a sturdy mechanism to yield themost compact Vacuum Contactor of its kind. The features of this contactor are as below.

The mechanical latch or magnetic actuator design is also available upon special requirement.

Front View of a TypicalL.V. Vacuum Contactor

Inside view of M.V.Vacuum Contactor (Solenoid Type)

Vacuum Contactor TrollyConventionally the motor switching in medium voltage range was done by the oil or SF6 circuit breakers. Thesecircuit breakers which are basically designed for high current interruption with very high energy mechanismsare too unnecessary for switching the comparatively smaller loads. The frequent switching of such smaller loadsresults into exhausting the life of mechanisms or compels for higher maintenance.

The vacuum contactor fuse combinations mounted on a trolley is a perfect solution giving a very high mechanismlife. This trolley with new panels or retrofitting arrangement is an optimum solution.

Notes :

1) Other coil voltages can be made available upon request.2) Standard AC Control Voltages can be provided on enquiry.3) MVC-400 and CS-VP11 : The conventional mechanism of closing & holding by electromagnet and opening by spring.4) MVC-400L and CS-VP11L : The electromagnetic coil for closing, a mechanical latch for holding delatching by an

electromagnetic coil and opening by a spring.5) MVC-400XL : Electromagnetic coils are used for closing as well as opening and permanent magnet is used to

hold contactor in closed or open condition.6) HVC-400 is metalclad outdoor vacuum contactor.7) Fuse selection recommendation : To be backed up by suitable short circuit protective devices.8) Suitable for retrofitting with existing M.O.C.B. motor switching arrangements.9) Surge supressors are available on request as an optional arrangement.

Technical SpecificationsParameter Vacuum Contactor Type Units

VC- VC- VC- MVC- MVC- CS- CS- HVC-400 630 400XL 400 400L VP11 VP11L 400

Frequency 50 50 50 50 50 50 50 50 Hz

Rated Insulation voltage 1.0 1.0 1.1 7.2 7.2 12 12 12 kV

Rated Operational voltage 0.690 0.690 1.100 3.3/6.6 3.3/6.6 11 11 11 kV

Rated Operational Current 400 630 400 400 400 400 400 400 Amp

Making current AC4 / AC3* 4 6.3 4 4 4 4 4 4 kA rms

Breaking current AC4 / AC3* 3.2 5.04 3.2 3.2 3.2 3.2 3.2 3.2 kA rms

Short time current / time 3.2/10 5.04/10 3.2/10 9/1 9/1 9/1 9/1 9/1 kA/Sec.

Switching mechanism Solenoid Solenoid Solenoid Solenoid Mech. Solenoid Mech. S/M

Switching frequncy (max) 1200 300 1000 1000 1000 Ops/Hr.

AC1 700 700 700 Ops/Hr.

Switching AC2 200 200 200 Ops/Hr.

frequncy AC3 500 500 500 Ops/Hr.

AC4 500 150 500 Ops/Hr.

Mechanical 5 5 5 2.5 0.25 1 0.2 1 MillionsLife (ops)

Electrical 0.5 0.5 0.5 0.25 0.25 0.25 0.2 0.25 Millions

Dielectric Withstand 28 28 28 28 28 kV-1 min

Impulse Withstand 60 60 75 75 75 kVp

Closing time 115 115 70-100 70-100 70-100 ms

Opening time 25 50-70 50-70 50-70 ms

No of Aux.Contacts 4NO+4NC 4NO+4NC 4NO+4NC 3NO+4NC 4NO+4NC 3NO+4NC 4NO+4NC 4NO+4NC

Rated Control voltage AC 110, 220, 240 & 415 220 220 220/110 220/110 220/110 Volt

Rated Control voltage DC 24, 48, 110 & 220 220 220 220/110 220/110 220/110 Volt

Tripping Voltage 220 220/110 220/110 220/110 V AC/DC

Closing Coil Inrush Current (220V) 4.2 4.2 4.2 4.2 4.2 Amp

Holding Current 1 max. 1 max. 1 max. Amp

Tripping Inrush current 1 1 Amp

Coil Excitation Cont. Cont. Cont. Cont. Pulse Cont. Pulse Cont./Pulse -

Motor 1500 1500 6000 6000 6000 kW

Application Transformer 2000 2000 7500 7500 7500 kVA

Capacitor 2000 2000 1000 1000 1000 kVAR

Weight (approx.) 12 20 20 23 24 40 45 125 Kg

* AC3 for VC-400, VC-630 and VC-400XL and AC4 for balance all.

Applicable Standards : VC series - IEC 60947 part IV secton 1 / IS 13947 part 4 section 1 MVC-400 series - IEC 470 / IS 9646 / BS 775 CS-VP11, CS-VP11L and HVC-400 - IEC 470 / IS 9046 / BS 775 / IEC 265 / IS 9920

For the disposal of product and packing material please adopt Local/National Legislation of waste disposal.

The data given in this catalogue are subject to change without notice.

Vacuum Interrupters Lab.S-6 Division, D-2, M.I.D.C. Waluj, Aurangabad - 431 136 India.Tel : +91-240-2554662, 2554371, 2554372, 2554558, 2554559.Fax : +91-240-2554697E-mail : Girish.Magre@cgl.co.inWeb : www.cgvi.com, cglonline.comRegd. Office : Crompton Greaves Ltd., 6th Floor, CG House,

Dr. Annie Besant Road, Worli, Mumbai - 400 030.

Vacuum Contactor Assembly and Testing :

Vacuum Contactor Applications : Motor Switching Transformer Switching

Capacitor Switching Furnace Switching