UNI-T UT262E Phase Sequence Detector - User Manual
Model: UT262E
Brand: UNI-T
Safety Precautions ⚠️
Read this manual carefully before operating the UT262E. Failure to follow safety guidelines may result in electric shock or damage to the instrument.
- Always wear appropriate personal protective equipment (PPE) such as safety glasses and insulated gloves.
- Ensure the power source is de-energized before making any connections, if applicable.
- Do not operate the device in wet or humid conditions.
- Avoid exposing the device to extreme temperatures.
- This instrument is designed for non-contact measurement of phase sequence.
Product Overview
The UNI-T UT262E is a professional-grade phase sequence detector designed for non-contact measurement of the phase sequence of a three-phase power supply. It is essential for electricians and technicians to ensure correct wiring in three-phase systems, preventing damage to motors and other equipment.
Key Features:
- Non-contact phase sequence detection
- Clear LED indicators for phase sequence and presence
- Compact and ergonomic design
- Durable construction for industrial environments
- Automatic power off function
- Low battery indication
Specifications
| Parameter | Specification |
|---|---|
| Phase Sequence Detection | Non-contact |
| Voltage Range | 100V ~ 600V AC (for reference, check actual device for precise range) |
| Frequency | 50Hz / 60Hz |
| Battery Type | 1.5V AAA x 3 |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -10°C to 50°C |
| Dimensions | Approx. 70mm x 70mm x 30mm |
| Weight | Approx. 150g (including battery) |
Operating Instructions
Follow these steps to perform a phase sequence test:
- Preparation: Ensure the UT262E is powered on. Check the battery level indicator.
- Connection (Non-Contact): Bring the UT262E near the three-phase power lines. The device detects the phase sequence without direct contact. The specific method of proximity will be detailed in the actual manual, often involving placing the device near the conductors or terminals.
- Observation: Observe the LED indicators on the UT262E.
- A sequence of LEDs might indicate the direction (e.g., L1 -> L2 -> L3).
- A different sequence of LEDs will indicate the reverse direction (e.g., L1 -> L3 -> L2).
- An indicator might show if a phase is missing or if the voltage is too low/high.
- Interpretation:
- Forward Sequence (e.g., Clockwise): Typically indicated by a specific pattern of lights (e.g., L1, L2, L3 light up in order). This is often the desired sequence for motor rotation.
- Reverse Sequence (e.g., Counter-Clockwise): Indicated by a different pattern (e.g., L1, L3, L2 light up in order). This may require re-wiring to correct.
- No Phase/Error: If no lights illuminate or an error indicator is shown, check power supply or device function.
- Power Off: The device may feature an auto-power-off function. If manual power off is required, press and hold the power button until the indicators turn off.
Note: The exact LED patterns for forward and reverse sequence will be clearly illustrated in the original manual, often with diagrams. For this HTML, we describe the general principle.
Troubleshooting
- Device does not power on: Check battery installation and charge. Ensure batteries are new or fully charged.
- No phase sequence detected: Ensure the device is brought close enough to the conductors. Verify the voltage is within the operating range. Check if the power supply is active.
- Inconsistent readings: Ensure stable power supply. Avoid strong electromagnetic interference.
- LED indicators not functioning: Contact UNI-T support or a qualified technician.
Maintenance and Care
Keep the device clean and dry. Use a soft, dry cloth for cleaning. Avoid using solvents or abrasive cleaners.
Store the device in its original packaging or a protective case when not in use.
Warranty Information
This UNI-T product is covered by a limited warranty. Please refer to the warranty card included with your product or visit the official UNI-T website for detailed terms and conditions.
For service and support, contact UNI-T or an authorized distributor.
