Test-A-Relay Services Page

By: Test-a-relay  11-11-2011
Keywords: Power Systems

1.         SCOPE OF SERVICES AVAILABLE

1.1         COMMISSIONING OF PROTECTION, METERING, CONTROLS, SUPERVISORY CONTROLS, ETC, FOR NEW PROJECTS.

1.2        MAINTENANCE TESTING OF EXISTING PROTECTION, METERING, CONTROLS AND SUPERVISORY CONTROL FUNCTIONS.

1.3         AC AND DC PRESSURE TESTING OF POWER CABLES.

1.4         FAULT FINDING AND DIAGNOSIS (AUDITS) OF PROTECTION, METERING AND CONTROL  CIRCUITS.

1.5        SUPPLY AND INSTALLATION OF NEW EQUIPMENT RELATED TO THESE ITEMS.

1.6         DESIGN, INSTALLATION AND TESTING OF SUPERVISORY CONTROL SYSTEMS UP TO THE COMMUNICATIONS INTERFACE.

1.7         DESIGN AND MANUFACTURE OF PROTECTION AND CONTROL AND METERING PANELS.

1.8         SUPPLY OF A WIDE RANGE OF RE-FURBISHED RELAYS.

1.9         LOCAL DESIGN AND MANUFACTURE OF SPECIAL APPLICATION RELAYS.

1.10       PRESENTATION OF TRAINING COURSES THAT COMBINE THEORY AND PRACTICAL      DEMONSTRATION.

1.11       SUBSTATION SUPPLY AND ERECTION.

1.12       LAYING AND TERMINATION OF CONTROL CABLES.

1.13       PROTECTION SETTING STUDIES AND POWER SYSTEM ANALYSIS.

1.14       DESIGN OF THE PROTECTION AND CONTROL OF POWER SYSTEMS, INCLUDING      IEC 61850 PROTOCOLS.

1.15       CONSULTING AND SPECIALIST SERVICES RELATED TO POWER SYSTEMS E.G.             POWER FACTOR AND HARMONIC ANALYSIS, METERING TARIFF ANALYSIS ETC.

Keywords: Power Systems

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11-11-2011

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When a second fault occurs anywhere on one of the healthy phases, the result is a two phase to earth fault generally with high fault current.2) Should the fault be arcing in nature, the system capacitance in combination with the system inductance can cause an increase in voltage to earth of up to fives times system peak voltage.