SPD480 Phase Rotation Indicator. The SPD480 determines phase rotations on secondary potential transformers.

- Easy to operate – connect one lead to each phase
- Large alligator clips for easy connection to cables and bus bars
- Operates properly on variable frequency drives. Does not give false readings by pulsed waveforms
- Verify proper rotation on feeder extensions
- Determine phase rotation on secondary potential transformers
The TPI Model SPD480 Phase Rotation Indicator operates properly on variable frequency drives. Does not give false readings by pulsed waveforms.

| Model SPD480 Specifications | ||
|---|---|---|
| Voltage Range | 110V to 480V 3 phase | |
| Maximum Voltage Input | 480V | |
| Frequency Response | 40Hz to 70Hz | |
| Maximum Voltage Input Time Ratings | 480V: 4 minutes 450V: 4 minutes 220V: 30 minutes 110V: Continuous |
|
| Test Lead Insulation Rating | 1000V | |
| Fusing | 500mA, 50kA interrupting rating | |
| Size | 1.6” x 6” x 3” (41mm x 152mm x 77mm) | |
| Net weight | 9.8 oz. (278g) | |
Rotating disk indicates phase rotation
Features & Benefits
- Easy to operate – connect one lead to each phase
- Large alligator clips for easy connection to cables and bus bars
- Operates properly on variable frequency drives. Does not give false readings by pulsed waveforms
- Verify proper rotation on feeder extensions
- Determine phase rotation on secondary potential transformers






