Electrical System Testing including pre-commissioning, commissioning and Maintenance.
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Vvison provides services for Electrical System Testing including pre-commissioning, commissioning & Maintenance. We are dedicated to serve the industrial sector, as well as academic and government institutions through awareness of modern scientific and engineering problems applied in Quality and Material testing, Development of leading edge, cost-effective technologies, optimal selection of new and emerging methods, efficient and cost saving applications.
We improve safety and reliability, we inspect, test and evaluate our customer’s critical assets, reducing liability and safeguarding their consistent performance.
Transformer is the main Equipment in the Electrical System. Our company provides the experience and testing equipment to implement the following main tests of the transformer.
Turn Radio (Per Tap)
Winding Resistance
Vector Group
Insulation Resistance
Power Factor (CH,CL,CH-CL)
Oil Breakdown Test BDV(ASTM & IEC)
Cooling System Test
Protective Devices Testing
Stability Test
Tap Changer (AVR test)
Functional & Interlock check
Bushing CT Test(BCT)
VT Test
C.B and Circuit Breaker
Gas Isolated Circuit Breaker (GI C.B), Air Circuit Breaker (ACB), Oil Isolated Circuit Breaker and Vacuum Circuit Breaker (VCB) are the Main Switches in the Electtical Power System. For the purpose of protecting the Grid & Reliability, many tests are performed on the C.B at site during the Pre-Commissioning, Commissioning & Maintenance as the following tests
Conductivity Resistance Measurement
IR Test
Pot Test
On-Off Timing Test
VIDAR Test (VCB only)
Interlock Check
Earth System Test
Earth system is the first Protective line for human beings & electrical equipment. The soil resistive Measurement during design any project due to fault calculation & earth system specification. The soil resistive & earth system are tested using modern methods (Bird's Eye Method & 62% Method).
VT is one of the Metering, Protection & Isolation Instrument device in the Elecrtical System. For reliability & Conformity many testing performed on the VT at site during Pre Commissioning, Commissioning & Maintenance as following tests
Radio Test
Winding Resistance Measurement
IR Test
Burden Measurement
Polarity Check
CT Current Transformer
CT with the VT are one of the Metering, Protection & Isolation Instrument device in the Electrical System. For reliability & Conformity many testing performed on the CT at site during Pre Commissioning, Commissioning & Maintenance as following tests
Radio Test
Winding Resistance Measurement
IR Test
Burden Measurement
Polarity Check Point
Commissioning
Switches are on part of the electrical power system. Our company provides the experience and testing equipment to implement the main following required testing of the GIS and AIS Grid, MV and LV SWGR
CT and VT Test
B Test
IR Test
Pot Test
CRM Check
Partial Discharge Test
Functional and Interlock Test
Protection Relay Test
We offers a range of advanced and application oriented Engineering Services to help solve a wide variety of engineering problems for the Oil & Gas sector.
LEARN MOREWe take responsibility for your purchasing portfolio, commissioning purchases, managing administration and dealing with logistical procedures.
LEARN MOREVvison labs provide state of the art Calibration Services by understanding client's needs and through a partnership approach.
LEARN MOREConstruction, project management services using established technologies, systems and work processes to provide most favorable results for clients.
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