Phase Angle Meter (646)
TESCO’s Phase Angle Meter (Cat. No. 646) is a self-contained, portable instrument designed for fast, accurate checks of relay and instrument connections. It displays the angular relationship between one voltage and one current, ideal for power factor testing, switchgear verification, and generator synchronization.
Key Features
- Input-powered: no batteries required
- Rugged, field-ready construction
- Large, panel-mounted analog display viewable from a distance
- Easily detects changing phase angle relationships in real time
- Custom input options available for unique test configurations
Description
Quickly verify phase relationships in relay, switchgear, and metering setups, no auxiliary power required.
The 646 is also widely used for evaluating phase angles in polyphase watthour meter installations, helping technicians verify power factor accuracy across each phase. Its analog dial provides immediate visual feedback, making it easy to observe and interpret phase behavior during live testing.
Specifications
| Unit | Details |
|---|---|
| Voltage Range | 15-480 VAC |
| Current Taps | 1-10 Amps |
| Display | Analog phase angle dial (degrees) |
| Input Power | Supplied from test signals (no batteries) |
| Construction | Durable enclosure for field and shop use |
| Inputs | Custom configurations available upon request |
Product Documents
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Disclaimer:
TESCO Metering reserves the right to modify product designs, specifications, features, and documentation at any time as part of our continuous improvement process. All information is provided “as is” and may change without prior notice. While TESCO® strives for accuracy, completeness, and technical reliability, customers should verify the latest product details before making purchasing or engineering decisions. For confirmation of current specifications or application suitability, please contact TESCO® directly.