GFDD470-110 Fan vs. GFDD470-90 Fan: Specifications, Dimensions, and Replacement Differences

• GFDD470-110 Fan and GFDD470-90 FanAll belong to the GFDD series of top-blow dry-type transformers with transverse flux.Cooling FansThe
• Both models share the same “470” in their model numbers:According to the GFDD series naming convention, this indicates that it belongs to the same 470mm length series.
• The main difference lies in “110” and “90”:These represent different impeller diameter specifications, so the two fans cannot be directly interchanged simply because they are the same length.
• GFDD470-110:The current product specifications list 220 V, 50 W, and an operating temperature range of -40°C to 75°C.
• Replacement of Old Fans:In addition to the model number, you’ll need to verify the voltage, power rating, mounting holes, overall dimensions, airflow direction, and the cooling air duct of the original transformer.

What is the difference between the GFDD470-110 fan and the GFDD470-90 fan?

The GFDD470-110 and GFDD470-90 are both GFDD top-blow cross-flow cooling fans designed for forced air cooling of dry-type transformers.

The fact that both fan models include “470” indicates that they belong to the same length series; the main difference lies in the “110” and “90” that follow, which correspond to different impeller specifications.

Therefore, although the two products look quite similar,We cannot conclude that they are directly interchangeable based solely on the number 470.The

You can view the products individually:GFDD470-110 Cooling Fanrespond in singingGFDD470-90 Cooling FanThe

GFDD470-110 vs. GFDD470-90 Specification Comparison

How do you interpret the model numbers GFDD470-110 and GFDD470-90?

The GFDD series model numbers can help you quickly determine the approximate structural specifications of a fan.

Taking the GFDD470-110 as an example:

• GFDD:Top-Blow Dry-Type Transformer Cross-Flow Cooling Fan Series
• 470:Fan Length Specifications
• 110:Impeller Diameter Specifications

The GFDD470-90 follows the same naming convention, except that the impeller size has changed from 110 to 90.

Therefore, the key difference between the GFDD470-110 and the GFDD470-90 is not the fan length, but rather the impeller and the resulting differences in structure and performance.

Are the GFDD470-110 and GFDD470-90 fans direct replacements for each other?

We do not recommend replacing it directly without verifying the parameters.

Even though both fans belong to the 470-length series, you still need to verify:

• Supply Voltage
• Rated Power
• Overall Dimensions of the Fan
• Impeller Dimensions
• Mounting Hole Locations
• Mounting Bracket
• Airflow Direction
• Original Transformer Cooling Duct
• Thermostat Fan Control Circuit

Especially for old dry-type transformer repair projects, the simplest approach is not just to quote “GFDD470,” but to provideFull model number + photo of the nameplate + fan dimensions + photos of the on-site installationThe

In what situations is the GFDD470-110 fan suitable?

The GFDD470-110 is primarily used for forced air cooling of dry-type transformer windings. The fans are typically installed on both sides below the windings to direct cool air into the cooling ducts between the high- and low-voltage windings.

The current GFDD470-110 product specifications state:

• Voltage: 220V
• Power: 50W
• Operating Temperature: -40°C to 75°C
• Top-Blow Cross-Flow Configuration
• For forced air cooling of dry-type transformers

If the original unit is a GFDD470-110, check the nameplate and installation dimensions of the original fan first when replacing it.

When should you consider the GFDD470-90 fan?

If the original dry-type transformer is a GFDD470-90, in principle, you should first look for a corresponding product based on the original model number.

If you wish to switch to the GFDD470-110, you cannot simply substitute it just because the two models belong to the same length series. You should first verify whether the change in impeller size will affect the installation space, the ductwork, and the cooling performance of the original design.

If the nameplate is incomplete or the original manufacturer’s model is no longer in production, you may provide on-site measurements, and the manufacturer will determine a replacement model based on the actual installation conditions.

What other common fan models are available in the GFDD470 series?

In addition to the GFDD470-90 and GFDD470-110, the GFDD470 series also includes a variety of impeller sizes, such as:

• GFDD470-90
• GFDD470-110
• GFDD470-120
• GFDD470-150
• GFDD470-155

Although these models all belong to the 470-length series, their impeller specifications differ, so their airflow, power, dimensions, and suitable applications may also vary.

To view more specifications, please visitDry-Type Transformer Cooling Fans Product CenterThe

GFDD470-110 vs. GFDD470-90: Frequently Asked Questions

Are the GFDD470-110 and GFDD470-90 the same length?

According to the GFDD series naming convention, both belong to the 470mm length series; however, the actual dimensions and mounting specifications should be determined by the specific product drawings.

Does the GFDD470-110 have a higher airflow than the GFDD470-90?

Since the two products use different impeller sizes, it is not possible to directly specify the exact difference in airflow based solely on the model number. When purchasing, please refer to the actual airflow specifications for the respective products.

Can the GFDD470-90 be directly replaced with the GFDD470-110?

You cannot simply substitute one part for another just because they are the same length (470). You need to verify the voltage, power rating, dimensions, mounting holes, airflow path, and installation space.

What should I do if I don't know the original fan model?

Please provide the original fan nameplate, overall dimensions, impeller dimensions, mounting hole locations, and on-site photos so we can help confirm the appropriate model based on the actual installation conditions.

The GFDD470 Series Fans Support Customization of Models and Sizes

There may be differences among manufacturers of dry-type transformers in terms of air ducts, mounting brackets, and fan clearance. The GFDD470 series is available in various sizes—including 90, 110, 120, 150, and 155—which can be selected based on the specific project requirements.

For projects involving the replacement of old fans, non-standard installation dimensions, or bulk supply orders, please send us the original model number, a photo of the nameplate, and the installation dimensions for confirmation.

ferret outGFDD470-110 Fan,GFDD470-90 FanmaybeMore GFDD/GFD Dry-Type Transformer Cooling Fan ModelsThe

statement denying or limiting responsibility

This document is intended to explain the differences between the GFDD470-110 and GFDD470-90 fan models, provide guidelines for replacement, and outline selection methods. It is intended solely as a reference for product selection and technical discussion.

Voltage, power, airflow, dimensions, mounting holes, and other specifications may vary depending on the manufacturer, production batch, and whether the product is custom-made. Actual replacement and procurement should be based on the original product nameplate, actual measurements, product technical drawings, and the final confirmed supply specifications.