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L. T. Swichboard & Control Panel / Quality Assurance
 
 
 
 
 
     
  Quality Assurance Plan For Manufacturing Of Switchboards & Control Panels
 
     
 
SR. NO.
DESCRIPTION
ACTIVITY / CHARACTERESTICS
TESTING / INSPECTION
AGENCY FOR TESTING
REF. / ACCEPTANCE DOCUMENTS
REMARKS
Type
Qty.
1.0
RAW MATERIAL  
 
1.1
CRCA Sheet Steel
  • Appearance
  • Bend Test
  • Dimensions
  • Physical & Chemical Properties
Visual
100%
Dept.
IS / P.O.
 
 
Physical
Sample
Dept.
 
 
Physical
100%
Dept.
 
 
TC/Lab.
Sample
Dept.
 
1.2
Copper / Aluminium Flats
  • Appearance
  • Dimension
  • Resistance
  • Physical & Chemical Properties
Visual
100%
Dept
IS
 
 
Physical
Random
Dept.
 
 
Physical
Sample
Dept
 
 
TC
Random
Dept.
 
1.3
Wires
  • Conductor / Size
Physical
Random
Dept.
IS
 
 
  • Insulation / Continuity
Megger
Random
Dept.
 
2.
ACCESSORIES  
 
2.1
Insulators / supports
  • Appearance
  • Dimensions
  • Insulation
  • Quality
  • Properties
Visual
100%
Dept.
IS
 
 
Physical
Random
Dept.
 
 
Megger
Random
Dept.
 
2.2
Gaskets
Visual
Random
Dept.
IS
 
 
Burning
Sample
Dept.
 
3.0
SWITCHGEAR COMPONENTS
  • Rating}
  • Type / make
  • Functional
Visual
100%
Dept.
IS / P.O.
 
 
Visual
100%
Dept.
 
 
Ele. Check.
Samples
Dept
Operation Checked by giving Power Supply
4.0
FABRICATION
  • Dimensions
  • Diagonal
  • Welding Quality
  • Feeder
  • Compartment
  • Finish / Appearance
Physical
100%
Dept./Client
Approved Drgs.
 
 
Physical
100%
Dept./Client
 
 
Physical
100%
Dept./Client
 
 
Visual
100%
Dept./Client
 
 
Visual
100%
Dept./Client
 
5.0
PRE-TREATMENT OF SHEET STEEL
  • Degreasing
  • Rinsing
  • Pickling
  • Rinsing
  • Activation
  • Phosphating
  • Rinsing
  • Passivation
Caustic Soda
100%
Dept./Client
 
 
Water
100%
Dept./Client
 
 
Acid
100%
Dept./Client
 
 
Water
100%
Dept./Client
 
 
Chemical
100%
Dept./Client
 
 
Chemical
100%
Dept./Client
 
 
Water
100%
Dept./Client
 
 
Chemical
100%
Dept./Client
 
6.0
POWDER COATING
  • Cross Cut Adhesion Test
  • Erichson Cup Test
  • Pencil hardness Test
  • Material Property
  • Sieve Test
  • Shelf Life
Test
Sample
TC
 
 
Test
Sample
TC
 
 
Test
Sample
TC
 
 
Test
Random
TC
 
 
Test
Sample
Dept.
 
 
Visual
Sample
Dept.
 
7.0
FINAL INSPECTION
  • Dimensions
  • Component Rating
  • Busbar size/Support / Clearance
  • Wiring
  • Operational Checks
  • Shrouding of Live Parts
Physical
100%
Dept./Client
Approved Drgs.
 
 
Visual
100%
Dept./Client
 
 
Visual
100%
Dept./Client
 
 
Physical
100%
Dept./Client
 
 
Physical
100%
Dept./Client
 
 
Physical
100%
Dept./Client
 
  Electrical checks
 
 
  • IR Value Test
  • Continuity
  • HV Test
  • Interlocks
  • Protection relays
  • Appearance / Finish
  • Painting
  • Temperature Rise
Meger
100%
Dept./Client
 
 
Tester
100%
Dept./Client
 
 
Tester
100%
Dept./Client
 
 
Physical
100%
Dept./Client
 
 
Physical
100%
Dept./Client
 
 
Visual
100%
Dept./Client
 
 
Visual
100%
Dept./Client
 
 
Physical
Optional
Dept./Client
 
 
     
  The Following May please be noted  
     
 
  • Routine Test Certificates as per IS : 8623 are prepares for Each switchboard individually.
  • Temperature Rise Test Shall be conducted only if it has been agreed upon during order finalization.