Electro Mechanical Relays

Product Details:

Features:

• High sensitivity.
• Variable setting range.
• Fast operation.
• High drop-off/pick-up ratio.
• Self powered. No aux. supply is required.
• Applicable for a wide range of battery voltages.
• Provision for using external milliammeter.
• Drawout case and tropicalised finish.

Product Details:

Features:

• Adjustable setting range
• Very high drop off / pick up ratio
• Unaffected by normal variation in frequency of input voltage
• Simple and robust construction
• Positive action without chatter

Application:

• Instantaneous over: Voltage protection of generators, capaci-tors etc
• Definite time undervoltage protection of ac motors
• Automatic voltage changeover schemes and other instantane ous and definite time under voltage and overvoltage applica-tions requiring adjustable settings.

Product Details:

Features:

• Simple and robust construction
• Positive action and high mechanical stability
• Heavy duty contact available, where required
• Slugged relays with delay on operation / reset available in ac/dc version. 

Application:
Control, alarm, indication and  other auxiliary duties in ac or dc systems.

The type VAA Plug-in-relays is specially designed for industrial control duties requiring respetitive switching operations. It is capable    of providing over 5 million operations without servicing and  will  withstand an  operation  of  upto 600 per hour.

Product Details:

Features:

• Simple and robust construction
• Positive action and high mechanical stability
• Heavy duty contact available, where required
• Slugged relays with delay on operation / reset available in ac/dc version. 

Application:
Control, alarm, indication and  other auxiliary duties in ac or dc systems.

The type VAA Plug-in-relays is specially designed for industrial control duties requiring respetitive switching operations. It is capable    of providing over 5 million operations without servicing and  will  withstand an  operation  of  upto 600 per hour.

Product Details:

Features:

• Simple and robust construction
• Positive action and high mechanical stability
• Heavy duty contact available, where required
• Slugged relays with delay on operation / reset available in ac/dc version.

Application:
Control, alarm, indication and other auxiliary duties in ac or dc systems.

Control, alarm, indication and other auxiliary duties in ac or dc systems. The type VAA Plug-in-relays is specially designed for industrial control duties requiring respetitive switching operations. It is capable of  providing  over 5 million operations without  servicing and  will  withstand an operation of upto 600 per hour.

Product Details:

Features:

• Simple and robust construction
• Positive action and high mechanical stability
• Heavy duty contact available, where required
• Slugged relays with delay on operation / reset available in ac/dc version

Product Details:

Features:

• High speed.
• Low burden.
• Immunity to magnetising inrush.
• Immunity to transients and surges
• Compact in size.
• Single pole version with separate flags for differential/highset operation available.

Product Details:

Features:

• High speed.
• Low burden.
• Immunity to magnetising inrush.
• Immunity to transients and surges
• Compact in size.
• Single pole version with separate
• flags for differential/highset
• operation available

Product Details:

Features:

• Simple and robust construction
• Positive action without chatter
• Choice of pre-closing and post-closing supervision

Application:
Post-closing or continuous supervision of the trip circuit of cir-cuit breakers

General Description:
Type VAX and MVAXM relays are of simple and robust con-struction. They are arranged to initiate an audible alarm and visual indication if the trip circuit of a circuit breaker fails or the breaker tripping mechanism does not operateTwo versions of type VAX and MVAXM relays are available. Type VAX 21 and MVAXM 21 relays monitor the trip circuit only when the circuit breaker is closed (post-closing supervision only) while type VAX 31 and MVAXM 31 relays monitor the trip circuit continuously (both pre-closing and post-closing supervi-sion). Both versions detect the following conditions

Product Details:

The P15D is a dual powered non-directional overcurrent and earth fault relay which provides protection for applications where no external auxiliary power supply is available, or where the auxiliary supply available does not guarantee the dependability required for protection applications.

Customer Benefits:

• Ci only or Toni powered relay
• Coro burden on substation battery when CT energiseg
•  Cost effective
• Measurement protection and monboring In one box
• Front IPSO port for local communication
• Internal rtert for maintaining LCD/communication during fault
• Compact size 

Product Details:

Discription:
Relay type VDG 13 is a heavilydamped, frequency compensatedinduction disc relay with adjustableinverse time/voltage characteristic.With the relay electro-magnet de-energised, the disc contact is held inthe closed position by a spiralcontrol spring.  When the ratedvoltage is applied to the relay coil, atorque is produced in the contactopening direction and when theapplied voltage falls below thesetting value, the control springtorque overcomes the driving torqueand closes the contact.  Damping ofthe disc movement is by aremovable high retentivitypermanent magnet. The unique method of winding theoperating coil ensures that the time/voltage characteristics are identicalon each of the voltage taps.Selection of the required voltagesetting is by means of a link boardwhich has a single insulated link.Taps on the operating coil and aseries resistance are connected tothe link board and provide aconstant inductance/resistance ratioon each voltage setting andfrequency compensation effect isobtained by using the correctcombination of coil reactance andresistance.The relay operating time can beadjusted by means of the disc back-stop which is controlled by rotatinga knurled moulded disc at the baseof the graduated time multiplierscale.Type VDG 13 relay is a single polerelay.

Features:

• Identical time/voltage characteristics on all taps.
• Frequency compensated.
• Simple construction, easily accessible.
• Comprehensive range of auxiliary unit ratings.
• Dust tight drawout case and tropicalised finish.

Application:
Relay type VDG 13 is an inverse time undervoltage protection of ac circuits, capacitors, rectifiers and machines such as induction motors.

Product Details:

Features:

• Simple and robust construction
• Positive action and high mechanical stability
• Heavy duty contact available, where required
• Slugged relays with delay on operation / reset available in ac/dc version

Application:
Control, alarm, indication and   other auxiliary duties in ac or dc systems.

The type VAA Plug-in-relays is  specially designed for industrial control duties requiring respetitive switching operations. It is capable of providing  over 5 million operations without servicing and  will withstand an  operation  of  upto 600 per hour 

Product Details:

Features:

• Simple and robust construction
• Positive action and high mechanical stability
• Heavy duty contact available, where required
• Slugged relays with delay on operation / reset available in ac/dc version

Application:
Control, alarm, indication and   other auxiliary duties in ac or dc systems.

The type VAA Plug-in-relays is  specially designed for industrial control duties requiring respetitive switching operations. It is capable of providing  over 5 million operations without servicing and  will withstand an  operation  of  upto 600 per hour 

Product Details:

VAA relays are voltage operated relays.The relays are attracted armature units ofcompact design with positive action anda high degree of mechanical stability. Therelays can be supplied with self, or handreset contacts and changeover contacts. Standard contacts are of silver/copperalloy. They are shaped and positionedto ensure a reliable and low resistancenormally open or normally closed contact.Standard VAA 11/21 relays are suitablefor ac/dc supply and standard VAA 13/23relays are suitable for dc supply only.

Features:

• Simple and robust construction
• Positive action and high mechanical stability
• Heavy duty contact available, where required
• Slugged relays with delay on operation / reset available in ac/dc version.

Product Details:

Features:

• Simple and robust construction.
• High stability on external faults.
• Sensitive high speed protection on internal faults.

Application:

• Differential protection of ac machines, reactors, auto transformers and bus bars.
• Balanced and restricted earth fault protection of generators and transformer windings.
• Transverse differential protection of generators and parallel feeders.

Product Details:

CAG14 relay is applied for high impedancerestricted earth fault protection ofgenerator, transformer, reactor and busbars. It is also used with a follower timerfor time delayed earth fault protection.Other applications include capacitor bankunbalance protection, generator interturn fault protection etc.

Features:

• Simple and robust construction.
• High stability on external faults.
• Sensitive high speed protection oninternal faults.

Application:

• Differential protection of ac machines,reactors, auto transformers and busbars.
• Balanced and restricted earthfault protection of generators andtransformer windings.
• Transverse differential protection ofgenerators and parallel feeders.

Product Details:

Features:

• Single frequency measuring stage- instantaneous and definite timefor type MFVUM 12
• Two definite time frequencymeasuring stages for type MFVUM 22.
• Fully independent or differentialpick-up/drop-off operation fortype MFVUM 22.
• Wide frequency setting ranges 10.001 - 500 Hz. Site selectableunder-frequency or over-frequency mode.
• Built-in timer with wide settingrange.
• Wide operating voltage range.
• Consistent accuracy.
• Low burden.
• Positive calibrated settings bymeans of switches.
• Test facility.
• Compact design

Product Details:

Features:

• Single frequency measuring stage- instantaneous and definite timefor type MFVUM 12.
• Two definite time frequencymeasuring stages for typeMFVUM 22.
• Fully independent or differentialpick-up/drop-off operation for type MFVUM 22.
• Wide frequency setting ranges10.001 - 500 Hz. Site selectableunder-frequency or over-frequency mode.
• Built-in timer with wide setting range.
• Wide operating voltage range.
• Consistent accuracy.
• Low burden.
• Positive calibrated settings bymeans of switches.
• Test facility.
• Compact design

Product Details:

VAPM31 Relay is used for detection offailure or inadvertent removal of voltagetransformer secondary fuses and forprevention of incorrect tripping of circuitbreakers.

Features:

• High speed operation
• Compact and robust construction
• Positive action