**Executive Summary**
This notification from the Ministry of Power amends a previous notification regarding energy conservation in distribution transformers. It updates the Indian Gazette with changes relating to compliance with type test parameters and the inclusion of a new loss standard table. The new standards are valid from January 1, 2027, to December 31, 2029.
**Key Points / Main Content**
* **Compliance Requirements:** All distribution transformers manufactured, commercially purchased, or sold in India must:
* Meet type test parameter requirements per IS 2026 (Part 1):2011 for short circuit impedance, load loss, no-load loss, and current measurement.
* Carry the Bureau of Indian Standards (BIS) certification mark.
* **Amendment of Existing Standards:**
* In Table 2 and Table 3, the figure "2025" is replaced with "2026".
* **Introduction of New Loss Standard Table (Table 4):**
* A new Table 4 is inserted, specifying standard losses in watts for transformers up to 11 kV class.
* Table 4 is valid from January 1, 2027, to December 31, 2029.
* Table 4 defines the maximum permissible losses at 50% and 100% load conditions for 1-star to 5-star rated transformers, across a range of kVA ratings.
* **Energy Efficiency for Non-Specified kVA Ratings:**
* For kVA ratings not specified in Table 4, the energy efficiency level certified by BIS will be applicable.
**Impact Analysis**
**Stakeholder: Distribution Transformer Manufacturers**
* **Impact:** Manufacturers must ensure their products comply with the updated type test parameters and loss standards outlined in the notification.
* **Action Required:** Adjust manufacturing processes and designs to meet the new loss standards specified in Table 4 for transformers manufactured from January 1, 2027. Obtain BIS certification for compliance.
**Stakeholder: Purchasers and Sellers of Distribution Transformers**
* **Impact:** Purchasers must ensure that the distribution transformers they are acquiring meet the new energy efficiency standards. Sellers must ensure that their products adhere to the new standards.
* **Action Required:** Request compliance documentation and BIS certification from manufacturers for all distribution transformers purchased or sold, especially those manufactured from January 1, 2027.
**Stakeholder: Bureau of Indian Standards (BIS)**
* **Impact:** BIS is the certifying agency.
* **Action Required:** Ensure to provide certification of energy efficiency level in cases where kVA ratings aren't specified in Table 4.
Key Entities Referenced
Energy Conservation Act, 2001: The primary legislation that empowers the Central Government to regulate energy efficiency. Section 14(a) is the specific section mentioned as the source of power for this notification.
Bureau of Energy Efficiency: The statutory body consulted by the Central Government in framing these regulations related to energy efficiency standards.
IS 2026 (Part 1):2011: Indian Standard specifying measurement of short circuit impedance and load loss, and measurement of no-load loss and current in Distribution transformers
Distribution Transformer: Subject of the policy; specifies that every distribution transformer being manufactured, commercially purchased or sold in India must meet specified energy efficiency standards
Ministry of Power: The central ministry responsible for issuing the notification regarding energy efficiency standards for distribution transformers.