CAN CSA C802.2-18 PDF

Full title and description

CAN/CSA‑C802.2‑18 — Test method and minimum efficiency values for dry‑type transformers. This national standard specifies test methods and minimum efficiency values for dry‑type distribution and power dry‑type transformers and provides guidance on using a total‑ownership‑cost (TOC) methodology for selecting energy‑efficient designs.

Abstract

CAN/CSA‑C802.2‑18 (fourth edition, 2018; reaffirmed R2023) defines how to measure and report the energy efficiency of dry‑type transformers and lists minimum efficiency values by kVA class and configuration. The standard covers the test procedure, corrections and modifications for special features, and recommends the TOC approach (and a modified TOC for non‑utility users) as the preferred selection method for efficient units.

General information

• Status: Current (2018 edition; reaffirmed R2023).
• Publication date: 2018 (published November 2018; reaffirmed 2023).
• Publisher: CSA Group (Canadian Standards Association).
• ICS / categories: 29.180 — Transformers. Reactors (Electrical engineering).
• Edition / version: Fourth edition — CAN/CSA‑C802.2‑18 (R2023).
• Number of pages: 43 pages.

Scope

The standard applies to single‑phase and three‑phase self‑contained dry‑type transformers with a nominal frequency of 60 Hz and a high‑voltage winding of 35 kV or less. It covers nominal ratings from about 15 kVA up to the kVA ranges specified in the tables (15 to 833 kVA for single‑phase and 15 to 7 500 kVA for three‑phase in the published tables) and explains adjustments for special designs and features that affect efficiency. The document specifies both the test methods and the minimum efficiency values to be used for selection and conformity assessment.

Key topics and requirements

• Standardized test methods for measuring no‑load and load losses of dry‑type transformers.
• Tabulated minimum efficiency values by kVA class and phase (single‑phase and three‑phase).
• Use of Total Ownership Cost (TOC) methodology to determine cost‑optimal efficiency selections (and a modified TOC for non‑utility users).
• Rules for modifying efficiency values for special electrical or mechanical features.
• Marking, measurement conditions and reporting requirements to ensure consistent conformity assessment.

Typical use and users

Used by transformer manufacturers, design engineers, electric utilities, procurement/specification writers, test laboratories and government or utility energy‑efficiency programs to specify, test and verify minimum efficiency performance of dry‑type transformers and to guide life‑cycle cost–based purchasing decisions.

Related standards

Part of the CAN/CSA C802 family (the C802 series separates minimum efficiency rules by transformer type: C802.1 for liquid‑filled distribution, C802.2 for dry‑type, and C802.3 for power transformers). Internationally relevant related documents include the IEC/EN 60076 series (power transformers) and IEC 60076‑11 (dry‑type transformers), which cover complementary performance, testing and safety requirements.

Keywords

dry‑type transformer; transformer efficiency; minimum efficiency values; test method; CAN/CSA C802.2; TOC; total ownership cost; CSA Group; energy efficiency; transformer testing.

FAQ

Q: What is this standard?

A: CAN/CSA‑C802.2‑18 is a Canadian national standard that defines test methods and minimum efficiency values for dry‑type transformers (the 2018 edition, reaffirmed in 2023).

Q: What does it cover?

A: It covers measurement procedures for losses, minimum efficiency values by kVA class for single‑ and three‑phase dry‑type transformers (60 Hz, HV ≤ 35 kV), adjustments for special features, and guidance on using a total‑ownership‑cost approach for selection.

Q: Who typically uses it?

A: Transformer manufacturers, utility and facility engineers, procurement/specification specialists, test labs, regulators and energy‑efficiency program administrators use it to specify and verify transformer efficiency and to make life‑cycle cost decisions.

Q: Is it current or superseded?

A: The 2018 edition (CAN/CSA‑C802.2‑18) is the current published edition and was reaffirmed (R2023); it supersedes earlier editions (2012, 2006, 2000) of CAN/CSA‑C802.2. Users should check for any later amendments or reaffirmations before formal procurement or compliance work.

Q: Is it part of a series?

A: Yes — it is part of the CAN/CSA C802 family that separates minimum efficiency requirements by transformer type (C802.1 for liquid‑filled distribution, C802.2 for dry‑type, C802.3 for power transformers) and is intended to work alongside pertinent IEC/EN power‑transformer standards.

Q: What are the key keywords?

A: Dry‑type transformer, efficiency, minimum efficiency, test method, TOC, CSA C802.2, transformer losses, energy efficiency.