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 Quality standards


Selvon Instruments Pvt. Ltd. An ISO 9001-2000 Company is committed to improve its method & ways to satisfy the needs of our customers & deliver to them on time, quality product & services.
Designing, manufacturing, Installation & servicing is done as per ISO 9001-2000 quality procedures for Global Acceptance. ‘Our Quest for excellence’ helps us to maintain the trust of our customers through consistent improvements in all related aspects.

Selvon Power line equipments are highly reliable and are known for their quality & excellent services.All the power items like transformer and variable auto transformers are built in house for high reliability & long life these are tested as per relevant IS specifications. The electronic components used are bought from reliable and approved sources like Philips, Uptron, BEL, etc. ICs, Zener & Diodes are all imported. All the electronic components are all subject to random sample checks for their value tolerance and other characteristics. The switches, fuses, terminals blocks, metering and indicators etc. are also bought from approved sources that have an established name in the market.



Inprocess Testing

Final Testing
Description Inspection Description Inspection
Transformer High Voltage   Routine Test
  Insulation Resistance Servo Voltage Stabilizer Physical Examination
Weight of Transformer   H.V.B.D. Test
No load Current Insulation Resistance Test
  Range Accuracy
Varics High Voltage No Load Current
  Insulation Resistance No Load Losses
Weight of Transformer Copper Losses
No load Current Speed of Correction
Panel Assembly As Per Circuitry Acceptance Test
  Stage Check Physical Examination
Colour Coding H.V.B.D. Test
  Insulation Resistance Test
Motorisation H.V.B.D. Test Range Accuracy
Insulation Resistance Test No Load Current
Motor Rotation in Forward/Reverse No Load Losses
  Copper Losses
Speed of Correction
Induced voltage Test
Leakage Current
Full Load Test & Efficiency
Provision for Earthing
Under / Over Voltage Protection
Overload Single Phase Protection
Developed By  2Sigmas Workgroup
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