| Segment | Length | Meaning | Example | |---------|--------|---------|---------| | XX | 2 | Major component group | CN (Conductor), IN (Insulator) | | YY | 2 | Sub-type / material | CU (Copper), CM (Composite) | | ZZZ | 3 | Serial number / variant | 010 | 3.1 Conductors & Contact Wires | RI Code | Description | Unit | Standard | |---------|-------------|------|----------| | CN-CU-001 | Hard-drawn copper contact wire, 107 mm² | reel | RDSO TI-36 | | CN-CU-002 | Hard-drawn copper contact wire, 150 mm² | reel | RDSO TI-36 | | CN-AL-010 | Aluminum conductor steel reinforced (ACSR) – 19/2.79 mm | drum | IS 398 | | CN-AL-011 | Aluminum alloy conductor (AAAC) – 100 mm² | drum | IEC 61089 | | CN-CAD-020 | Copper-cadmium contact wire, 150 mm² (high tensile) | reel | RDSO TI-41 | 3.2 Insulators | RI Code | Description | Unit | Mechanical load (kN) | |---------|-------------|------|----------------------| | IN-PO-101 | Porcelain pin insulator, 25 kV, 160 kN | piece | 160 | | IN-PO-102 | Porcelain post insulator (horizontal), 25 kV | piece | 120 | | IN-CM-201 | Composite long rod insulator, 25 kV, 210 kN | piece | 210 | | IN-CM-202 | Composite anti-fog insulator, 25 kV | piece | 160 | 3.3 Hardware Fittings (Clamps, Lugs, Brackets) | RI Code | Description | Material | Application | |---------|-------------|----------|--------------| | HW-AL-301 | Anchor clamp for 150 mm² Cu contact wire | Aluminum bronze | Anchor point | | HW-ST-302 | Steady arm (adjustable) | Stainless steel | Registration | | HW-CU-310 | Parallel groove clamp (PGC) – Cu to Cu | Copper alloy | Jumper connection | | HW-AL-315 | Dropper clip, preformed | Aluminum alloy | Dropper attachment | | HW-GI-320 | M20 eye bolt with nut & washer | Galvanized iron | Cantilever assembly | 3.4 Cantilever & Mast Components | RI Code | Description | Section | Length (mm) | |---------|-------------|---------|--------------| | CA-ST-401 | Cantilever tube (horizontal) | 60x60x5 mm | 2500 | | CA-ST-402 | Diagonal brace (adjustable) | 50x50x5 mm | 1800 | | CA-ST-410 | Register arm tube | 40x40x4 mm | 1200 | | MA-ST-501 | Mast, octagonal, 9 m | 8 mm wall | 9000 | | MA-FO-502 | Foundation bolt set (4 bolts + template) | M30 grade 8.8 | 850 | 3.5 Neutral Section (Phase Break) | RI Code | Description | Type | Current rating | |---------|-------------|------|----------------| | NS-EP-601 | Neutral section insulator (epoxy) | Solid rod | 800 A | | NS-AS-602 | Automatic neutral section switching device | Magnetic | 1200 A | 3.6 Earthing & Bonding | RI Code | Description | Conductor size | Application | |---------|-------------|----------------|--------------| | EB-CU-701 | Flexible copper earth wire | 50 mm² | Mast earthing | | EB-TB-702 | Tinned copper bond strap | 25x3 mm | Rail to mast | | EB-LG-710 | Lug terminal for 50 mm² wire | Tinned copper | Compression type | 3.7 Droppers & Stitching Wires | RI Code | Description | Diameter (mm) | Length range | |---------|-------------|----------------|----------------| | DR-CU-801 | Copper dropper, flexible | 5 mm (16 mm²) | 500-2000 mm | | DR-CU-802 | Preformed dropper with crimped ends | 6 mm | 600-1800 mm | | ST-CU-810 | Stitching wire (bond between lines) | 7/2.5 mm Cu | 2000 mm standard | 4. RI Code Application Matrix (Maintenance Use) | OHE Assembly | Required RI Codes | |--------------|-------------------| | Simple cantilever | CA-ST-401, CA-ST-402, MA-ST-501, IN-PO-101, HW-ST-302 | | Anchor point | HW-AL-301, CN-CU-001, EB-CU-701, HW-GI-320 | | Neutral section | NS-EP-601, NS-AS-602, CN-CU-002, HW-CU-310 | | Overlap | IN-CM-201, DR-CU-801 (×2), HW-CU-310 (×4) | 5. Search & Filter Guide (Stores / ERP) Use the following prefixes for quick lookup in your inventory system: