IS 9537:1980 Part 1 is the Indian Standard (BIS) for conduits for electrical installations - part 1: general requirements. This standard specifies the general requirements and tests for conduits and fittings used to protect electrical wiring. It establishes a classification system based on mechanical strength, temperature resistance, and electrical properties, and defines standard dimensions. This part acts as a foundational document for the entire IS 9537 series on electrical conduits.
Lays down general requirements for conduits and conduit fittings used for the protection of electrical wiring installations.
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Standard Status | Withdrawn — superseded by IS 9537 (Part 1):2013 | Current | IEC 61386-1:2008 |
| Classification System | Descriptive terms (e.g., Light/Medium/Heavy duty) | 12-digit numerical code for performance characteristics | IEC 61386-1 |
| Compression Strength (Typical Medium) | ~350 N (based on 35 kg load in IS 9537-3:1983 for medium duty non-metallic) | 750 N (Classification '3' for Medium) | IEC 61386-1 |
| Impact Strength (Typical Medium) | Pass/fail at a given energy (e.g., 1kg from 100mm) | 2 Joules (Classification '3' for Medium) | IEC 61386-1 |
| Low Temperature Classification | Specific test temperature (e.g. -5 °C) but no formal classes | Formal classification code (e.g., Code '2' for -5 °C) | IEC 61386-1 |
| Ingress Protection (IP) Rating | Not formally defined or classified with IP ratings | Classified via 7th & 8th digits of the classification code | IEC 61386-1 |
| Bending Test Criteria | Visual check for cracks or kinking after bending | Visual check plus a gauge must be able to pass through the bent sample | IEC 61386-1 |