Description
The 550005 uses a hand-cranked AC source and a null-balance bridge to measure transformer turns ratio and exciting current. It supports single-phase transformer tests and phase-by-phase checks of suitable three-phase transformers. The optional auxiliary transformer is not included in this page’s standard range.
Key Specifications
- Power source: hand-cranked generator
- Turns-ratio range: 0.001–129.999
- Turns-ratio accuracy: ±0.1%
- Exciting-current range: 0–1 A
- Four decade dials
