English
RFQ

Download the app

What do AN and AF on the transformer nameplate mean?

Schneider

05/21/2025

Problem description:
What do AN and AF on the transformer nameplate mean?

Product Line:
Trihal Dry Type Transformer

Solution:
There are two cooling methods for dry - type transformers, namely AN method, i.e. air self - cooling; and AF method, which starts the fan for forced air cooling. When the Trihal dry - type transformer is connected to an external fan, forced ventilation (AF method) is activated when the coil temperature reaches 100°C, and the fan power is cut off when the temperature reaches 80°C. The above temperature setting values can be adjusted according to the on - site operating conditions.

Topics

Transformer

Schneider

Chengdu Fabo Automation Complete Equipment Co., Ltd is an authorized distributor of Schneider Electric, a global leader in energy management and automation solutions.

What are the criteria for selection of distribution transformer?

What are the criteria for selection of distribution transformer?

Transformer Selection Criteria: Essential Factors for Optimal PerformanceSelecting the appropriate transformer is critical for ensuring power distribution reliability across industrial, commercial, and residential systems. This process requires meticulous evaluation of load dynamics, environmental constraints, and regulatory standards. Below we outline key selection criteria to guide engineers and designers in making informed decisions.1. Maximum Demand AssessmentThe transformer’s capacity (kVA)

Master Electrician

In which directions will dry-type transformers develop in the future?

In which directions will dry-type transformers develop in the future?

By Echo, 12 Years in the Electrical IndustryHi everyone, I'm Echo, and I've been working in the electrical industry for 12 years.From my early days doing commissioning and maintenance in distribution rooms, to later participating in electrical system design and equipment selection for large-scale projects, I’ve witnessed how dry-type transformers have evolved from traditional tools into smarter, greener devices.Recently, a new colleague asked me:“What’s the current state of dry

Installation and Commissioning of 10kV Dry-Type Transformers

Installation and Commissioning of 10kV Dry-Type Transformers

By James, 10 Years of Electrical Equipment Maintenance ExperienceHi everyone, I’m James, and I’ve been working in electrical equipment fault repair for 10 years.Over the past decade, I’ve worked in factories, substations, and distribution rooms of all sizes, involved in the installation, commissioning, maintenance, and troubleshooting of dry-type transformers. Dry-type transformers are among the most common electrical devices we deal with on a daily basis.Today, a new colleague

What are the reasons for low insulation at the low-voltage side of a dry-type transformer?

What are the reasons for low insulation at the low-voltage side of a dry-type transformer?

Hi everyone, I’m Felix, and I’ve been working in electrical equipment fault repair for 15 years.Over these years, I’ve traveled across factories, substations, and distribution rooms all over the country, troubleshooting and repairing all kinds of electrical equipment. Dry-type transformers are among the most common devices we deal with.Today, a friend asked me:“What does it mean when the low-voltage side of a dry-type transformer has low insulation resistance?”Great

Source professional electrical partners, experts, and explore smart grid & energy solutions.