Quality Assurance Plan

COMPLETENESS OF SUPPLY:

• The Panel will be complete and operative in all aspects.
• All brand new components will be used as specified herein. Any further modifications and alternation as agreed upon in writing after mutual discussion.
• The Panel specified herein will be polythine packaged for transportation so as to meet the space and weight limitations of transport facilities.

DESIGN CRITERIA:

• All Panel will be installed indoors in a clean but not humid and tropical atmosphere and Panel rating will be based on an ambient air temperature at 45 °C
• All 415 V Panel will be capable of continuous operating satisfactorily under the following conditions.

(a) The Voltage varying ±10% of rated voltage.
(b) Frequency varying ±5% of nominal value of 50 Hz. and
(c) Combined voltage & Frequency variation of ±10%

• The Panel and components there of will be capable of with standing the mechanical forces and thermal stresses of the shot circuit current, listed in the annexures without any damage or deterioration of material.
• The minimum safe  clearance of all live parts of the Panel's will be as per relevant standards
• There will be no radio interference when the Panel are operated at maximum service voltage.

CONSTRUCTIONAL FEATURES:

• The Panel will be:

• Of the metal enclosed, Indoor/Outdoor, Floor/Wall mounted modular type
• Made up of the requisite vertical section.
• Of dust and vermin proof construction
• Provided with a degree of protection of IP 54/55/56/65
• Provided with a metal steel frame made of structural steel channel section properly drilled for mounting the switch-gear along with the necessary mounting hardware. Hardware will be Zinc plated and passivated.
• Provided with labels on the front and rear indicating the switch gear designation.
• Provided with the cable entry facilities at bottom with 3mm thickness removable covers.
• Of single front execution as per the requirement.
• Provided with the gaskets all round the perimeter of removable covers and doors of the panel.

• Operating devices will be incorporated only on the door.
• Door will be provided with concealed type hinged and captive screws.

FABRICATION:

• The panel will be fabricated using suitable cold rolled sheet steel of thickness not less than 2mm for load bearing and 1.6mm for non-load bearing.
• The panel edges and door edges will be reinforced against distortion by rolling, bending or by the addition of welded reinforcement members.
• The complete structure will be rigid, self-supporting, free from vibration, twists and bends.
• All sheet steelwork will be phosphate in accordance with applicable standards.
• Oil, grease, dirt and swarf are thoroughly removed by emulsion cleaning.
• Rust and scale will be removed by pickling with dilute acid followed by washing with running water, rising with slightly alkaline hot water and drying.
• After phosphating through rining will be carried out with clean water, followed by final rinsing with dilute dichromate solution and oven drying.
• Seven Tank Process will be done
• Light Siemens Grey Paint will be coated
• The final finished thickness of paint film on steel will be more than 100microns, and will not be more than 150microns
• Finished painted appearance of Panel will present an aesthetically pleasing appearance, free from dents and uneven surface.

INTERNAL WIRING:

• Wiring inside the switch-gear will be carried out with 1100/650V grade, PVC insulated wire.
• Control circuit will be wired with copper conductor of at least 1.5Sq.mm.
• Engraved identification ferrules, marked to correspond with the working diagrams will be fitted to each wire. Ferrules will be of white colour sleeve type with black lettering.

TESTING:
The panel will be subjected to the following types of tests.

• Physical inspection test.
• Electrical operation test.
• Dielectric test (HV testing) of 3 KV for one minute.
• Electrical continuity test (Meggaring) before and after HV test.
• Mechanical / operation test.

Routine test will be carried out on all associated Panel supplied with panel, as per relevant standards.