RELAY TESTING & COORDINATION

relay

RELAY TESTING & COORDINATION INQUIRY FORM

  • DOBLE 6150
  • ISA T-1000-PLUS
  • AC DC Injection Devices
  • MULTI METER
  • Coordination –ETAP 12

 

With sincere intentions to preserve and uplift our reputation in the market, we are offering Auxliliary Relay Testing Service. We offer this relay testing service in accordance with clients’ requirements. Offered relay testing service is used to provide protection for electrical equipment. This relay testing service is rendered by our accomplished professionals in an efficient manner.

 

TESTING OF PROTECTIVE RELAYS

  • Testing of Auxiliary relays, Electromagnetic relays, Static relays and Numerical relays of all renowned makes like SIEMENS, ALSTOM, ABB, L&T, ER, GE etc.
  • Inspection and servicing of protective relays including minor repairs at site.
  • Insulation resistance test to detect any deterioration in the insulation.
  • Checking of electrical operation indicators, internal auxiliary elements, DC auxiliary and master trip relays.
  • Secondary injection test for calibration of electromagnetic relays and error checking for Numerical and Static relays.
  • Tripping and alarm annunciation tests.
  • Testing of Specialized Unit Protections like Generator Protection, Transformer Protection and Motor Protection Relays.
  • Communication of Numerical Relays like SIPROTEC series of SIEMENS.

 

PRIMARY INJECTION TESTING

  • Polarity and Ratio test of CTs / PTs.
  • Measurement of knee-point voltage, exciting current and Rct for class PS CTs and tripping of breaker through protective relays including circuit checking.


TESTING OF PROTECTIVE RELAYING SCHEMES
The under listed protection schemes are completely checked and simulated for its sensitivity for In-zone fault and stability for fault external to the zone of protection.

  • Generator Differential Protection Scheme.
  • Simulation of Generator Protective Relaying.
  • Bus bar Differential Protection Scheme.
  • Restricted Earth Fault Protection Scheme for transformers.
  • Transformer Differential Protection Scheme.
  • Directional Over current and Earth Fault Relaying scheme.

 

TESTING AND COMMISSIONING SERVICES
OUTDOOR SWITCHYARD
Pre-commissioning tests for outdoor switchyard equipments (complete package) like power and distribution transformer, circuit breaker, CT-PT-NGR-NGT, lightning arrestor, insulator, isolator, earthing installations, relays and control panels, HT bus duct and cables and other electrical equipment as per the design and requirement of system.

 

DISTRIBUTION SYSTEM

Pre-commissioning tests for electrical distribution system like HT Switchgears, LT Switchgear, Motor Control Centres, Distribution Transformer, HT/LT bus duct, HT cable, HT/LT Motor, Battery, Battery Charger etc of different make like SEIMENS, ABB, JYOTI, L&T, CG and ALSTOM etc.

CAPTIVE POWER PLANT

Pre-commissioning tests of turbo-generator set along with auxiliaries (complete Package) like generator, generator transformer, bus duct with CT-PT-NGR-NGT, relay and control panels and other electrical equipments as per the design and specifications of consultants in the field of Power Generation.

PLANT BETTEREMENT AND MAINTENANCE SERVICES
RETROFITTING SERVICES

System study of electrical power distribution system for its performance, reliability and efficiency and remedies for betterment of the same by modification, renovation and revamping.
Modification, renovation and revamping of HT indoor switchgear.

 

MAINTENANCE SERVICES

  • Preventive maintenance and testing of outdoor switchyard electrical system equipment
  • Maintenance, overhauling and testing of HT indoor switchgear as well as LT switchgear.

Annual Maintenance of complete electrical switchgear and protection system as a package contract.o.