Velmurugan Mariyappan

Senior testing and commissioning engineer at Algihaz holding

• Saudi Arabia - Jeddah
• October 2015 to September 2019

Having 4 years of experience in Testing & Commissioning Engineer of AL Ghaiz Holding & Contracting -KSA. Experience in all electrical equipment’s in 380 KV, 132 KV, 110 KV Gas Insulated Substations GIS in Saudi Arabia

➢ Worked on Function checks and Scheme of 380 KV & 110 KV GIS LCC Schemes Line and Transformer feeder, 13.8 KV MV switchgear Schemes and Cable Feeders.
➢ Testing and commissioning of all Electrical equipment from LT and HT Electrical systems(0.415/6.6KV/11KV/110KV/400KV/765KV and Testing of CT, PT,
➢ CVT, LA, Circuit Breaker(Air, Vacum, SF6) Testing, Isolators.
➢ Worked on Scheme of OHL Line Protection and Relay Panels, Transformer Protection Panels, EHV, HV and MV High impedance Bus Bar Protection panel schemes.
➢ Worked on Substation Auxiliary system of ABTS, ACCS, RTCC and Load shedding schemes, Synchronization Schemes up to 380 KV, and Interlock Schemes.
➢ And Special testing of CT& VT Secondary injection, CT Primary injection, EHV, HV and MV high impedance Bus bar stability and Line stability for UG cable feeder.
➢ Testing and commissioning of Gas insulated switchgear equipment’s including 380 KV &110 KVSF6 Breakers, 13.8 KV Breakers, isolators, Earth switches, CT, PT, Bus bars Capacitor Banks, Auxiliary Relays and Timers, ACDB and DCDB
➢ Technical support with SAS and SCADA for Open loop and Closed Loop testing activities.
➢ Testing and Commissioning of LT & HT MOTORS -1MW
➢ Hi-Pot Test for 13.8 kv Switchgear Board and Power Cables
➢ SAS, SCADA-Open and Closed Loop test, Coordination for alarms, Measurements, Indication Interface Circuits , Fault Recorder and Event Recorder.
➢ Attending technical discussion with client, customer according to the system.