LT AND HT (UPTO 33KV) MANUFACTURING IN NWK

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MANUFACTURING PROCESS IN NWK

• JOINTLY MAKE THE MONTHLY PLAN WITH PLANNING CONSIDERING MACHINE LOADING AND URGENCY AS REQUIRED BY MARKETING

• AFTER FINALISATION OF MONTHLY PLAN DEVIDED INTO WEEKLY PLAN

• THEN MAKE DAY AND SHIFT WISE MICRO PLAN

• MAKE JOB CARDS WITH THE HELP OF PLANNING

• RAW MATERIAL ISSUE FROM STORE DAILY BASIS

• MONITORING PRODUCTION AND RAW MATERIAL CONSUMTION SHIFT WISE

• REVIEW OF MACHINE MAN METHOD AND METERIAL PROBLES IN MORNING MEETING

• OUTPUT MONITORING IN EVENNING PRODUCTION REVIEW MEETNG.

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FLOW CHART (LT XLPE / PVC CONTROL CABLE)

WIRE DRAWING INT. WIRE DRAWING BUNCHING ( RE) (RM) CORE EXTRUSION

CORE LAYING UP

INNER SHEATHING

TESTING REWINDING OUTER SHEATHING ARMOURING

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FLOW CHART (LT XLPE / PVC POWER CABLE)

WIRE DRAWING COND. STRAND. CORE EXTRUSION

CORE LAYING UP TAPE (EXTR. INSH) INER SHEATH INNER SHEATHING

TESTING REWINDING OUTER SHEATHING ARMOURING

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FLOW CHART (HT XLPE CABLE)

WIRE DRAWING COND. STRAND. TAPPING CORE EXTRUSION CURRING

CU TAPPING CORE LAYING UP TAPE (EXTR. INSH) INER SHEATH INNER SHEATHING

TESTING REWINDING OUTER SHEATHING ARMOURING

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WIRE DRAWING

• AL DRAWING PROCESS• AL ROD – 9.5MM

• USE OIL MEDIA AS LUBRICANT

• 9 DIE MACHINES – 2 NOS

• CAN DRAW 2MM IN ONE GO AND CAN DRAW MIN 1.32 IN 2 GO

• CU DRAWING PROCESS• CU ROD – 8MM

• USE DRAWMED MIX WITH WATER AS LUBRICANT

• 15 DIE MACHINE WITH INLINE AANNEALING CAN DRAW 1.38 IN ONE GO

• INTERMIDIADE DRAWING WITH INLINE ANNEALER CAN DRAW MIN 0.3MM IN ONE GO

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WIRE DRAWING

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BUNCHING

• AL BUNCHING PROCESS

• AL WIRE – 3 WIRE FOR 4 SQ. MM. AND 6 SQ. MM. RM CONDUCTOR

• NWK HAS 2 BUNCHING MACHINE FOR BOTH AL AND CU

• CU BUNCHING PROCESS

• CU WIRE – 7 WIRE FOR ALL 1.5 SQ.MM TO 6 SQMM RM CONDUCTOR

• NWK HAS 2 BUNCHING MACHINE FOR BOTH AL AND CU

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CONDUCTOR STRANDING

• TYPE OF CONDUCTOR• PLAIN ROUND CONDUCTOR (RE)

• STRANDED ROUND CONDUCTOR (RM)

• STRANDED AND SECTOR SHAPED CONDUCTOR.

• STRANDED AND ROUND COMPACED CONDUCTOR (RM/V)

SECTOR SHAPED CONDUCTOR IS EITHER PLAIN STRAIGHT SECTOR ( FOR SMALLER CROSS SECTION ) AND PRETWISTED (FOR BIGGER CROSS – SECTION)

NWK HAS ONE 19 BOBIN ,TWO 37 BOBIN AND ONE 61BOBIN CONDUCTOR STRANDING MACHINES

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CONDUCTOR STRANDING

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CORE INSULATION

• CORE INSULATION PROCESS FOR LT CABLES AND HT CABLES

• INSULATION TYPE – PVC INSULATION AND XLPE INSULATION

• INSULATION PROCESS – SINGLE EXTRUSION AND TRIPPLE EXTRUSION

• CONTROL CABLES INSULATION

XLPE AND PVC INSULATION DONE IN 80 MM NOKIA MAILLRFER EXTRUSION LINE

• POWER CABLE INSULATION

XLPE AND PVC INSULATION DONE IN 150 MM NOKIA MAILLRFER EXTRUSION LINE

• HT CABLE INSULATION

XLPE TRIPPLE EXTRUSION DONE IN 65MM/150MM/100MM ROYALE EXTRUSION LINE

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CORE INSULATION

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CORE TAPPING & SCREENING

• TAPPING MEANS APPLICATION OF TAPE EITHER HELICALLY OR LONGITUDINALLY

• VARIOUS TAPES USED :• SEMICONDUCTING TERENE TAPE

• COPPER TAPE

• IDENTIFICATION COL OUR POLY TAPE

SCREENING IS A PROCESS OF APPLYING A LAYER OF SEMICONDUCTING TAPE AND VERNISH ( FOR PVC ONLY) , SCREENING COPPER TAPE AND COLOUR IDENTIFICATION TAPE OVER XLPE INSULATED CONDUCTOR (FOR HT XLPE CABLE)

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CORE STRANDING

• INSULATED OR CU SCREENED CORES ARE STARNDED TOGETHER TO FORM A CABLE.

• CORES ARE IDENTIFIED BY COLOUR , NUMBERING OR TAPING WITH COLOUR TAPE.

• THESE CORES ARE THEN WRAPPED WITH A COMON COVERING OF PVC/LDPE TAPE – FOR TAPED INNESHEATH CABLE & RCC/POLYESTER TAPE FOR PVC EXTRUDED INNER SHEATH CABLES

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CORE STRANDING

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ARMOURING

ARMOURING IS A PROCESS OF PROVIDING PROTECTION TO THE CABLE BY CONSTRUCTION OF AN ARMOUR ARROUND

• TYPE OF ARMOURING

1. GI WIRE ARMOUR

2. GI FLAT STRIP ARMOUR

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SHEATHING

SHEATHING IS A PROCESS WHICH GIVES PROTECTION (LIKE JACKET) OVER ARMOUR

• TYPE OF SHEATHING

1. PVC – ST-2

2. PVC - FRLS

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Rewinding

• CHECKING AND CUTTING OF

1) CONTROL CABLE

2) POWER CABLE

3) HT CABLE

• AS PER STD LENGTH MENTIONED IN CUTTING INSTRUCTIONS

• DELIVER TO TEST FIELD FOR FINAL TESTING

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THANK YOU

ANY QUESTIONS?

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