MEGGER AVO BIDDLE 550555 TTR CALIBRATION STANDARD TESTED

The Megger AVO Biddle 550555 TTR Calibration Standard is a specialized reference accessory used to check or support transformer turns-ratio test equipment workflows. This tested listing is intended for calibration labs, electrical test shops, and transformer service organizations that need a model-specific TTR reference standard.

Specifications

• Brand: Megger / AVO Biddle
• Model/part number: 550555
• Product type: TTR calibration standard / reference accessory
• Application: transformer turns-ratio tester verification and calibration support
• Condition per title: tested
• Compatibility: verify exact TTR tester models and procedure requirements before purchase
• Calibration certificate, reference values, cables, case, and documentation should be verified from photos
• Use should follow the applicable Megger/AVO Biddle calibration procedure

Key Features

• Model-specific reference standard for transformer turns-ratio test workflows
• Useful for electrical test labs and transformer service departments
• Helps support verification of compatible TTR test sets when used with the proper procedure
• Tested source-title condition supports serviceable listing language
• Cautious compatibility notes reduce risk of unsupported model claims

Typical Applications

• Transformer turns-ratio tester verification
• Electrical calibration lab support
• Transformer service and maintenance
• High-voltage test equipment support
• Quality-control checks for TTR instruments

Condition & Listing Notes

• Confirm compatibility with your TTR instrument and required ratio values before purchase.
• Reference standards should include valid documentation for regulated calibration work.
• Cables, case, manuals, and certificate are included only when shown or stated.

Search Keywords

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