Completely Self-Protected Transformer

Protected transformers are available with a variety of protection options including a MagneX Interrupter, a secondary breaker with weak link for secondary fault and overload protection, a primary weak link fuse, current-limiting fusing for high interrupting ratings and limiting fault currents, and internal or external lightning arresters.

kVA	5-75
Primary Voltage	2400 - 19,920 V
Secondary Voltage	120-600 V

Features

Envirotemp™ FR3™ fluid
Electrical grade mineral oil available upon request
Meet or exceeds ANSI and NEMA standards
Meets DOE Energy Efficiency Standard 10 CFR Part 431 for distribution transformers
EPRI recommended interlaced core-type design (5-75 kVA)
Tank coating exceeds ANSI C57.12.31
Cover with a minimum dielectric strength of 8 kV
Tin-plated high and low-voltage bushing terminals to accommodate aluminum or copper conductors
Laser-engraved nameplate
Wet process porcelain high-voltage bushings resistant to high-voltage corona
Tank grounding provisions
Heavy-duty lifting lugs and hanger brackets per ANSI requirements1
Visible cover ground on units with cover-mounted bushings
Recessed tank bottom that offers protection when sliding over rough surfaces
Automatic pressure relief device
Polymer low-voltage bushings (5-75 kVA)
Arrester mounting and grounding provisions
Internal mark indicating the proper oil level
Permanently stamped secondary leads to ensure proper identification
Corrosion-resistant cover band
Quality System ISO 9001 certified
Optional MagneX Interrupter