Inductive Voltage Transformer Type UT 550 kV

UT inductive voltage transformers are of single-phase design and intended for connection between phase and ground in networks with insulated or direct-grounded neutral points.  

The extremely low core flux density enables the UT to withstand continuous 110 percent rated voltage continuously, and provide 190% overvoltage rating for 8 hours.  Hermetic sealing of the design is accomplished using stainless steel bellows above the oil to prevent free-breathing outside moisture-laden air.

The distributed gap core design offers low losses and ensures the unit has a relative high accuracy burden rating of 400 VA (ZZ).

• Revenue metering
• Control
• Indication
• Relay protection

The UT is a very capable inductive voltage transformer for withstanding extremem conditions with an excellent service record.  The standard design has a porcelain insulator with silicone rubber insulators available as an option, providing even better performance in heavily polluted environments.  Hitachi Energy offers our users unique advantages as follows:

• Excellent application engineering support ensures optimal solutions for your project
• Designed for environmentally diverse conditions - polar to desert
• Low loss distributed gap core ensures the best accuracy performance with the lowest core losses for the duration of service life
• Three secondary tapped windings