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Manufacturing Process
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| We use the latest technique in manufacturing our genuine quality products. The procedure involved in production of our products is given below:-
Procedure for Panel Fabrication, Powder Coating & Assembly
Procurement of deep drawn CRCA sheet.
Fabrication/Sheering with hydraulic machine notching & cut outs are made by typical spring loaded dies & power press brake. Special sections are fabricated outside on CNC machine.
CO2 .welding machine is used for smooth joints.
Fabricated parts are made burr free & all welding are grinding for smooth finish.
As per IS 6005 all sheet steel work are pretreated for:-
(a) Decreasing (Alkaline cleaning)
(b) Water rinsing.
(c) Rust & scale removing / pickling (acid cleaning).
(d) Washing in running water.
(e) Phosphatising.
(f) Rinsed in hot alkaline water & dried.
(g) Passivation by chromatisation.
Powder coating of required shade is done thru H.V. electrostatic method at 50-60KV DC & panel is cured in oven at 180°C 70-80 microns minimum powder thickness is maintained.
Nickel chromium/zinc plated hardware is used.
Good quality synthetic rubber with good aging property compression & oil resistance characteristics is used to make panel dust & vermin proof.
Bus-bars insulators of tested type & quantity are designed to meet short circuit capacity desired by client. Aluminium Bus-bar of recommended / calculated cross-section are used for achieving short circuit characteristic .Bus-bar if E91 WP grade. Current density of 1 amp per sq.mm is normally used.
All switchgears, boards, feeders are provided with prominent, engraved anodized aluminum identification plate, component are marked with designations for identification all wiring are numbered.
After assembly & wiring all live parts are shrouded with Bakelite sheets.
Standard Follows
1S-319847- for LV switchgear and degree of protection.
IS-8623(PT-1)-MCC.
15-694-1990 control &- power flexible wire for switchgear assembly.
15-6005 & 1477-Painting procedure.
I5-5-1978-Paint shade.
Inter Plant Steel Standard
Control desk & signaling unit- IPSS-1-03-010-87.
MCC- - IPSS-1-03-006-85.
Crane control panel - IPSS-1-10-010-84.
1-10-001-84
1-10-012-84
Control transformer - IPSS-1-04-013-84.
Transformer rectifier - IPSS-1-10-077-87.
(DC power pack)
Routine test on panel
Shop testing and pre-dispatch inspection
Insulation test by 500/1000V DC megger.
High-Voltage test by variable RMS AC volts at 2.5 i is less than v AC volts at 2.5KV AC.
Insulation test after H.V.
High current test (up to 2000A) for temperature rise on bus-bars by loading transformer.
Other test facility
Degree of protection test up to IP- **
*- 1st digit up to 4
*- 2nd digit up to 4
Facility for the above test is available with us.
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