| Standard ID | DL/T 1509-2024 (DL/T1509-2024) |
| Description (Translated English) | (Technical requirements for optical transport network (OTN) in power system) |
| Sector / Industry | Electricity & Power Industry Standard (Recommended) |
| Date of Issue | 2024-09-24 |
| Date of Implementation | 2025-03-24 |
| Older Standard (superseded by this standard) | DL/T 1509-2016 |
| Issuing agency(ies) | National Energy Administration |
