HTC Instruments ST-852 Digital Phase Sequence Indicator
- Brand
- HTC Instruments
- Model number
- ST-852
Three-phase phase sequence and open-phase indicator, 200 V to 480 V AC, 20 Hz to 400 Hz, with LEDs and buzzer. Needs no battery; clips onto the terminals.
Price and availability on request
Key features
- Phase sequence (CW / CCW) and open-phase check
- 3-phase AC, 200 V to 480 V
- 20 Hz to 400 Hz
- LED and buzzer indication together
- 5 indicator LEDs
- No battery needed
- Non-contact detection
- Clips onto control panel terminals
- Light and portable
Specifications
| Operating voltage | 200 – 480 V (3-phase AC) |
|---|---|
| Operating frequency | 20 Hz – 400 Hz |
| Withstand voltage | 4000 V / minute |
| Clockwise phase (CW) | All 3 orange LEDs lit; green LED lit; intermittent beep |
|---|---|
| Reverse phase (CCW) | All 3 orange LEDs lit; red LED lit; continuous beep |
| Open phase | Orange LED of the open phase off; green and red LEDs off; continuous beep |
| Power | None needed (battery-free) |
|---|---|
| Dimensions | H 80 × W 59 × D 23 mm |
| Weight | Approx. 200 g |
| Accessories | Double-insulated cords (about 1 m), measuring leads, meter pen, measuring shelf band, alligator clips, carrying case and manual |
Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.
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