3-Phase Sequence Rotation Tester LED & Buzzer Indicator TD-LED02
3-Phase Sequence Rotation Tester LED & Buzzer Indicator TD-LED02
3-Phase Sequence Rotation Tester with LED & Buzzer Indicator – 2-Pack (TD-LED02)
Quickly and confidently verify three-phase AC line rotation and sequence with this compact, professional-grade Phase Sequence Tester. Whether you're commissioning motors, control panels, or electrical systems, the TD-LED02 delivers instant visual and audible feedback — no batteries required. Made in Mainland China.
Key Features
- Instant LED Indication: Green LED + intermittent beep for correct phase sequence; Red LED + continuous beep for reverse phase sequence — results at a glance.
- Wide Operating Voltage: Supports 60V–600V AC three-phase systems for broad compatibility across industrial and commercial applications.
- Wide Frequency Range: Operates across 20Hz–400Hz, making it suitable for variable-frequency drive (VFD) applications and non-standard supply frequencies.
- Open-Phase Detection: Clearly indicates whether any phase is open, helping you troubleshoot wiring issues quickly.
-
Alligator Clip Test Leads: Double-insulated, colour-coded leads (~80cm) with alligator clips for secure, safe connections to control panel terminals:
- Yellow — U phase (L1/R)
- Green — V phase (L2/S)
- Red — W phase (L3/T)
- No Battery Needed: Powered entirely by the line under test — no battery to replace or forget.
- Portable & Lightweight: Compact 8 × 6 × 2.4 cm body weighs just 136g; comes with a protective carrying pouch for easy transport to job sites.
- High Accuracy: Accuracy Class 0.1 for reliable, repeatable measurements.
Technical Specifications
| Operating Voltage | 60V–600V AC (three-phase) |
| Limit Support Voltage | 2000V/min (Impulse: 4000V) |
| Frequency Range | 20Hz–400Hz |
| Accuracy Class | 0.1 |
| Max Continuous Use | 60 min @ 200V AC / 4 min @ 600V AC |
| Test Lead Length | ~80cm (double-insulated) |
| Dimensions | 8 × 6 × 2.4 cm |
| Net Weight | 136g per unit |
| Material | Plastic housing |
| Battery Required | No |
What's in the Box (2-Pack)
- 2 × TD-LED02 Phase Sequence Tester
- 6 × Alligator Clips (colour-coded)
- 2 × Protective Carrying Pouch
- 2 × User Manual
Related Tools You May Like
- 10-in-1 Multi-Functional Bone Wrench – Portable Repair Hand Tool
- 16-in-1 Multi-Function Folding Hex Wrench Set – Portable Repair Tool
- 3-in-1 Precision Eyeglass Screwdriver Keychain – Portable Mini Screwdriver
Learn more: OSHA on eye and face protection
Frequently Asked Questions
Q: Does the 3-phase sequence tester require batteries to operate?
A: No — the TD-LED02 phase sequence tester is powered directly by the three-phase AC line under test (60V–600V AC). No batteries are needed, making it ready to use straight out of the pouch.
Q: What do the LED colours and buzzer tones mean on this phase sequence indicator?
A: A green LED with an intermittent beep indicates a correct (positive) phase sequence, while a red LED with a continuous beep indicates a reversed phase sequence. The LEDs also show whether any phase is open, allowing fast fault identification.
Q: What voltage and frequency ranges are supported by the TD-LED02?
A: This phase sequence tester supports operating voltages from 60V to 600V AC (three-phase) and frequencies from 20Hz to 400Hz, making it compatible with standard power systems as well as variable-frequency drive (VFD) outputs.
Q: How long can I use the tester continuously at high voltages?
A: Maximum continuous use time is 60 minutes at 200V AC and 4 minutes at 600V AC. Always allow the unit to cool between extended testing sessions at higher voltages.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.