3-Phase AC Rotation Tester & Phase Sequence Indicator | Qme
3-Phase AC Rotation Tester & Phase Sequence Indicator | Qme
3-Phase AC Rotation Tester & Phase Sequence Indicator
The 3-Phase AC Rotation Tester and Phase Sequence Indicator is a compact, professional-grade electrical testing tool designed for electricians, engineers, and maintenance technicians. Whether you're commissioning motors, checking panel wiring, or verifying phase order in industrial or commercial installations, this detector gives you fast, reliable readings — all without direct contact.
Key Features
- Non-Contact Phase Detection: Safely measures phase sequence and detects live power without direct electrical contact, keeping you protected on the job.
- Multifunctional Design: Combines phase sequence measurement, live power detection, disconnection detection, and phase detection in a single handheld unit.
- Automatic Shutdown: Built-in auto power-off function conserves battery life and ensures the tool is ready when you need it next.
- Audible Buzzer Indicator: Integrated buzzer provides clear audio alerts alongside visual indicators for instant, unambiguous readings.
- Lightweight & Portable: Compact plastic construction makes it easy to carry to any job site, switchboard, or electrical panel — fits right in your tool bag.
- Clear Rotation Display: Instantly identifies forward (ABC) and reverse (ACB) phase rotation, critical for correct motor direction before startup.
Why Use a Phase Sequence Tester?
Incorrect phase rotation in three-phase systems can cause motors to run in reverse, damaging machinery and creating serious safety hazards. This tester lets you verify correct phase order quickly and confidently before energizing equipment, making it an essential tool for any electrical professional or serious DIYer working with three-phase AC systems.
Specifications
- Type: 3-Phase AC Phase Sequence & Rotation Tester
- Detection Method: Non-contact
- Functions: Phase sequence, live power detection, disconnection detection, phase detection
- Indicators: Visual LED + audible buzzer
- Auto Shutdown: Yes
- Material: Durable ABS plastic
- Brand: Qme
Great For
- Electricians and electrical contractors
- HVAC and refrigeration technicians
- Industrial maintenance and plant engineers
- Panel builders and motor installation specialists
- Facility management professionals
For general electrical safety guidelines and best practices when working with AC power systems, visit OSHA's Electrical Safety Resource Center.
Frequently Asked Questions
Q: What does a 3-phase rotation tester and phase sequence indicator do?
A: A 3-phase rotation tester checks the order in which the three phases of an AC electrical supply (L1, L2, L3) cycle. It identifies whether the rotation is forward (ABC) or reverse (ACB), which is critical for ensuring motors and three-phase equipment run in the correct direction. This Qme unit also detects live power and open/disconnected phases — all without direct electrical contact.
Q: Is this phase sequence tester safe to use?
A: Yes. The tester uses non-contact detection technology, meaning you do not need to make direct electrical contact to measure phase sequence or detect live voltage. It also features an audible buzzer and visual LED indicators for clear, easy-to-read results. Always follow standard electrical safety procedures and wear appropriate personal protective equipment (PPE) when working with live electrical systems.
Q: What types of systems is this AC rotation tester compatible with?
A: This tester is designed for use with three-phase alternating current (AC) electrical systems, commonly found in industrial machinery, commercial HVAC equipment, electric motors, pump systems, and three-phase power distribution panels. It is suitable for use by licensed electricians, maintenance technicians, and qualified electrical professionals.
Q: Does the tester turn off automatically?
A: Yes. The Qme 3-Phase AC Rotation Tester includes an automatic shutdown function that powers the unit off after a period of inactivity, helping to preserve battery life and keeping the tool ready for your next use.