Static Relays

The Aluminium Industries LTD. (ALIND) established in 1946, entered into technical collaboration with Delle Alsthom in 1977 for the manufacture of solid state protective relays at their Relays Division at Trivandrum. ALIND was the first company in India to introduce a range of Static relays in 1982. As the company in the forefront to introduce static relays, ALIND has the largest experience in this technology. The division has a most modern electronics plant producing the most advanced static and microprocessor based relays and C & R panels.

Apart from the relays developed during collaboration period, ALIND indigenously developed other static and microprocessor based relays and annunciators suitable for Railways and Electricity Boards with the unparalleled experience gained in the design, manufacturing, testing and application engineering.

  • Expertise in design, development, manufacture, supply & commissioning of protective relays and panels for over two decades.
  • ALIND panels and relays approved by RDSO after type tests and field trials are rendering excellent service even in unattended substations in severe climatic conditions of high ambient temperature, extreme humidity etc.
  • A team of highly experienced application and service engineers provide efficient customer support through a network of regional centres.
C & R PANEL - CONTROL PANEL WITH PROTECTIVE RELAYS FOR TRACTION SUBSTATION

The C & R panel for use in the Traction Substations for control of 220/132/110/66kV and 27kV circuit breakers, 27kV interruptors and protection of 220 or 132 or 110 or 66/27kV single phase transformers, substation equipment,27kV Over Head Equipment (OHE ). Compact relay design accommodates entire protections, controls and annunciation in the panel.

The product confirms to RDSO specification no:- ETI/ PSI /65 (1/97) with A&C slip-1 (March 1999) & slip -2 (April 2002)

Panel size
Simplex: H-2300mm, W-850mm, D-varieswith customer requirements
Duplex: H-2300mm, W-1850mm, D-varies with customer requirements
Capacitor Bank: H-2300mm, W-600mm, D-600mm


AZM 1114+: MICROCONTROLLER BASED FEEDER PROTECTION RELAY

AZM 1114+ relay is a comprehensive feeder protection scheme designed for the protection of conventional 27kV or 2 x 27kV (AT feeding system) ac single phase 50Hz traction Over Head Equipment (OHE). The relay is the modified version of the already approved and validated feeder protection relay type AZ 1114+ with built in autoreclose relay and many other improved features. The relay meets the relevant IS/ IEC standards. The protection function includes
  • Parallelogram characteristics Distance Protection (DP)
  • Wrong Phase Coupling Protection (WPC)
  • Potential Transformer Fuse Failure Protection. (PTFF)
  • Highset Instantaneous overcurrent Protection (Inst. OCR)
  • Local Breaker Back up Protection (LBB)
  • Switch On To Fault Protection (SOTF)
  • Built in multi shot auto reclose feature
  • Auto reclose bypass on high current earth faults (ARB)
  • Trip Circuit Supervision
AVDI 11-C: VECTORIAL DELTA I RELAY

The Vectorial Delta I relay type AVDI 11-C has been specially designed for application in the traction network to detect earth fault having high resistance. It acts as a backup to the distance protection relay and sensitive enough to discriminate fault current with ' magnitude less than normal load currents. This is encountered in traction network during extended feed condition or during earth fault with very high resistance

TVG 124: PANTO FLASHOVER PROTECTION RELAY

This relay based on logic circuit offers reliable protection of catenery wires at insulated overlaps of a traction network. The relay safeguards the catenery wires from flashover when a moving panto happens to bridge the overlap with one side alive and the other.dead by tripping the breaker connected to the live OHE.