Megger TRS1+ / TRS1D Transformer Ratio Standard - Step Down w/ Optional Step Up

The Megger TRS1 transformer ratio standard has been designed to be used with ratio meters as a high-accuracy reference ratio standard. This unique standard can provide ratios in both step-down (traditional ratio test instruments) and step-up (Biddle Hand Crank TTR) test modes. The standard is designed for use as a laboratory calibration standard, or as a portable check standard for field ratio and phase verification of any ratio instrument.

The TRS1 can be used with any single-phase and three-phase ratio meter. Combining three TRS1 units enables you to test a Wye-Wye configuration with three-phase ratio meters. When testing three-phase ratio meters with the TRS1, you need to use the instruments single-phase or three-phase excitation. This is meant as a time-saving feature or to validate TTRU3 phase ratio meter models.

The TRS1 is primarily designed to be used in calibration facilities where accurate ratio transformation is required. In addition, the TRS1 is designed for rugged and easy use as a field ratio test kit. The connections are meant to handle large test clips and when ratio results of complex transformers are not as expected, the TRS1 provides you with field confirmation that the test instrument is working as intended and reporting ratio accurately. Step Down + Step Up or Step Down Only options available.

Key Features

• High accuracy 0.01 %
• Rugged design for field use
• Versatile, step-down and step-up ratio
• Designed to be used with large test clips or banana jack inputs
• Four-terminal Kelvin - no lead compensation required
• Universal standard for use with all ratiometers

Product Range

• Megger TRS1D TRS1D Calibration Standard, Includes CERT-NIST, Step Down Only
• Megger TRS1PLUS TRS1+ Calibration Standard, Includes CERT-NIST, Step Down + Step Up