CHINT Self-recovering Over-voltage and Under-voltage Protector OUVR2

CHINT Self-recovering Over-voltage and Under-voltage Protector OUVR2 is an intelligent protection device specially designed for household and small-scale power distribution systems. It has the ability to automatically detect voltage abnormalities and respond quickly, effectively protecting terminal electrical equipment from damage caused by excessively high or low voltage. The following is a detailed explanation of its core information:

 I. Core Functions and Technical Features

1. **Intelligent Self-recovering Mechanism**  

   When the line voltage exceeds the over-voltage threshold (275V) or is lower than the under-voltage threshold (161V), the protector will quickly cut off the circuit within 1 second. When the voltage returns to normal (over-voltage recovery value 253V, under-voltage recovery value 196V), the protector will automatically reconnect without manual reset, ensuring continuous power supply in unattended scenarios.

2. **Wide Voltage Protection Range and High Safety**  

   - The voltage tolerance range covers 0-450V, and it can withstand 4kV impulse voltage (complying with Class III electrical safety standards). Even if the line fault voltage reaches the peak value, the protector itself will not be damaged.

   - Anti-misoperation design: It will not trigger protection for transient voltage fluctuations (such as lightning, equipment start-stop), avoiding frequent false tripping.

3. **Status Visualization and Compact Design**  

   - LED indicator intuitively shows the working status: green light on indicates normal voltage, red light on indicates over-voltage or under-voltage.

   - Modular rail mounting design, 1P+N model only takes 27mm width, saving distribution box space, suitable for residential sub-meter boxes and small distribution cabinets.

 II. Key Technical Parameters

 III. Application Scenarios and Installation Guidelines

1. **Applicable Scenarios**  

   - **Household Electricity**: Protect sensitive electrical appliances such as air conditioners, refrigerators, and computers from damage caused by voltage fluctuations.

   - **Commercial and Industrial**: Power distribution protection for small offices, shops, and light industrial equipment.

2. **Installation Points**  

   - **Wiring Specifications**: Strictly distinguish the incoming end (bottom-in) and outgoing end (top-out or bottom-out) according to the marks. The neutral line (N) must be reliably connected; reverse connection will cause the protector to fail.

   - **Conductor Selection**: Match the conductor cross-sectional area according to the rated current (e.g., 6mm² for 63A and below, 8mm² for 80A), and the built-in incoming line cannot be removed.

   - **Environmental Requirements**: Operating temperature -35°C~+70°C, altitude ≤3000 meters. Avoid use in high humidity or strong electromagnetic interference environments.

 IV. Purchase and After-sales Service

1. **Price and Channel**  

   - Please contact via Whatsapp: 0086-13811255435

V. Selection Suggestions and Precautions

1. **Current Specification Matching**  

   Select the appropriate current level according to the total load power, for example:

   - 32A is suitable for ordinary families (total power ≤7kW);

   - 63A is suitable for scenarios with concentrated high-power electrical appliances (such as central air conditioners, instant water heaters).

2. **Adaptation to Special Scenarios**  

   - 3P+N model must be selected for three-phase loads, and 1P+N model is recommended for single-phase loads.

   - For high inductive or capacitive loads (such as motors, transformers), it is recommended to additionally configure surge protectors.

3. **Installation and Maintenance**  

   - The first power-on requires a delay of 30±10 seconds to start to ensure voltage stability.

   - Regularly check whether the wiring terminals are loose to avoid overheating caused by poor contact.