GE 13800Y/7970-480Y/277 three-phase distribution transformer

GE 13800Y/7970-480Y/277

GE 13800Y/7970-480Y/277 refers to a GE three-phase distribution transformer voltage configuration, typically used for industrial, commercial, and utility power distribution applications. The designation indicates the transformer’s primary and secondary voltage ratings. Similar GE transformer configurations are commonly supplied as pad-mounted distribution transformers.

Product Description

Manufacturer: GE (General Electric)
Type: Three-phase distribution transformer
Primary Voltage: 13.8 kV grounded wye
Primary Phase-to-Neutral Voltage: 7.97 kV
Secondary Voltage: 480Y/277 V grounded wye
Frequency: Typically 60 Hz (North American standard)

Voltage Configuration Explanation

High Voltage Side (Primary):

• 13800Y/7970 V
• Wye-connected primary winding
• 13,800 V phase-to-phase
• 7,970 V phase-to-neutral
• Suitable for medium-voltage utility distribution systems

Low Voltage Side (Secondary):

• 480Y/277 V
• Wye-connected secondary winding
• 480 V phase-to-phase
• 277 V phase-to-neutral
• Provides both three-phase power and single-phase lighting power

Typical Technical Specifications

Parameter	Description
Transformer Type	Three-phase oil-filled distribution transformer
Primary Rating	13.8 kV class
Secondary Rating	480Y/277 V
Connection	Wye-Wye grounded
Application	Industrial plants, commercial buildings, substations
Cooling	ONAN (oil natural air natural)
Mounting	Pad-mounted or substation style
Standards	IEEE / ANSI distribution transformer standards

 

Applications

• Industrial manufacturing facilities
• Automation and process plants
• Data centers
• Commercial buildings
• Motor control centers (MCC)
• Large HVAC systems
• Factory electrical distribution networks

Main Features

• Converts medium-voltage utility power (13.8 kV) to low-voltage utilization power (480/277 V)
• Provides a grounded neutral for 277 V lighting and control loads
• Supports three-phase motor loads at 480 V
• Designed for reliable continuous operation in utility and industrial environments

Conclusion

The GE 13800Y/7970-480Y/277 transformer is a medium-voltage-to-low-voltage distribution transformer designed to step down 13.8 kV utility power to a 480Y/277 V industrial power system. It is widely used in heavy industry, commercial power distribution, and infrastructure applications requiring reliable three-phase electrical supply.