AVP-63 Overvoltage and Undervoltage Protector

Product description

The following is the technical analysis and application guide of the **AVP-63 Overvoltage and Undervoltage Protector**. Combining industry standards and the characteristics of mainstream products in the market, it provides you with comprehensive technical parameters, functional features, and selection suggestions:

I. Core Technical Parameters Schneider Circuit Breakers Price

Parameter Name	Typical Index	Technical Significance
Rated Voltage	220V AC (Compatible with wide voltage input of 180	Suitable for mainstream single-phase power grids worldwide (such as 220V in China, 230V in Europe, 100V in Japan, etc.)
Rated Current	63A (Maximum continuous load capacity)	Supports high-power devices in households and small commercial places (such as air conditioners, water heaters, charging piles, etc.)
Protection Threshold	- Overvoltage protection: 240-300V (Adjustable)	Set through a knob or button to meet the voltage fluctuation requirements in different regions (such as the scenario of large voltage fluctuations in rural power grids)
Protection Threshold	- Undervoltage protection: 170-210V (Adjustable)
Response Time	≤20ms (Typical value 15ms)	Quickly cuts off the circuit to prevent the equipment from running for a long time under abnormal voltage (such as instant protection during lightning surges)
Reset Mode	Automatic reset (within 5-30 seconds after the voltage recovers) or manual reset (Optional)	Supports unattended scenarios (such as remote monitoring systems) or critical equipment that requires manual confirmation (such as medical equipment)
Contact Capacity	16A/250V AC (Resistive load)	Directly drives small contactors or relays, reducing intermediate links (such as controlling the start and stop of motors below 3kW)
Electrical Life	≥100,000 operations (Resistive load)	Long-life design, suitable for scenarios with frequent actions (such as industrial areas with frequent voltage fluctuations)
Mechanical Life	≥1,000,000 operations (No-load action)	High reliability, reducing maintenance costs (such as installation in outdoor distribution boxes)

# II. Functional Features and Design Highlights

1. **Multiple Protection Mechanisms*Chint's NB1-63DC series DC circuit breakers Price**

- **Overvoltage protection**: When the voltage exceeds the set threshold (such as 240V), the circuit is cut off within 0.02 seconds to prevent electrical insulation breakdown (such as TVs, refrigerators, etc.).

- **Undervoltage protection**: When the voltage is lower than the set value (such as 170V), the power is automatically cut off to avoid motor stalling and burning (such as air conditioner compressors).

- **Phase failure protection**: When a single-phase phase failure is detected, the protection is immediately triggered (suitable for the scenario of three-phase to single-phase power supply).Chint NXR series thermal overload relays price

- **Surge suppression**: Built-in MOV (Metal Oxide Varistor) absorbs the instantaneous overvoltage generated by lightning strikes or switch operations (such as induced lightning).

2. **Intelligent Diagnosis and Indication*CHINT contactor price*

- **LED indicator lights*HINT surge protector price*:

- Green: Normal power supply.

- Red: Overvoltage or undervoltage alarm.

- **Fault memory**: Records the types and occurrence times of the last 3 faults (such as overvoltage at 245V, occurring at 10:30).

3. **Environmental Adaptability**

- **Operating temperature**: -20°C to +60°C (Adapts to extreme environments such as cold storage and high outdoor temperatures).

- **Protection level**: IP20 (Dust-proof, suitable for installation in indoor distribution boxes).

- **Electromagnetic interference resistance**: Passes the EN 55014-2 standard test to avoid misoperation (such as near strong interference sources like frequency converters).

4. **Installation and Maintenance**

- **Rail installation**: 35mm DIN rail, supporting quick plugging and unplugging (such as dense installation of multiple devices in a distribution box).

- **Tool-free wiring**: Screw terminals support 6mm² wires, reducing installation time (such as rapid deployment by construction personnel).

- **Contact cleaning**: Check the oxidation condition of the contacts every 2 years and polish them with sandpaper if necessary (such as in high-humidity coastal areas).

III. Typical Application Scenarios

Industry Field	Load Type	Protection Requirements	Installation Location
Home/Apartment	Air conditioner, water heater, refrigerator	Electrical appliances damaged due to voltage fluctuations	Inlet terminal of the distribution box
Commercial Building	Server, POS machine, LED screen	Data loss or hardware failure	Floor distribution box
Industrial Equipment	Small motor, electric welding machine	Motor overheating caused by undervoltage	Equipment control cabinet
New Energy	Charging pile, energy storage system	Battery life affected by abnormal power grid	Inside the charging pile
Agricultural Irrigation	Water pump, greenhouse controller	Equipment shutdown due to unstable voltage	Field distribution box

IV. Selection and Alternative Solutions

1. **Model Comparison**

Model	Rated Current	Protection Function	Applicable Scenarios
AVP-63	63A	Overvoltage/Undervoltage/Phase failure	Home, small commercial places
AVP-40	40A	Overvoltage/Undervoltage/Surge	Ordinary residential buildings, low-power devices
AVP-100	100A	Overvoltage/Undervoltage/Overload	Industrial equipment, high-power loads
AVP-63C	63A	Overvoltage/Undervoltage/Phase failure/Phase sequence	Three-phase to single-phase power supply scenarios

2. **Brand Alternative Suggestions**

- **Schneider**: iC65N Vigi overvoltage and undervoltage accessory (Needs to be used with a circuit breaker).

- **ABB**: S200 series overvoltage and undervoltage release (Modular design).

- **Chint**: NXB-63 overvoltage and undervoltage protector (High cost-performance).

V. Installation and Wiring Guide

1. **Wiring Steps**

1. **Power-off operation**: Turn off the main switch of the distribution box to ensure safety.

2. **Connect the power supply**: Connect L (live wire) to terminal 1 and N (neutral wire) to terminal 2.

3. **Connect the load**: Connect the live wire of the load to terminal 3 and the neutral wire of the load to terminal 4.

4. **Set the threshold**: Set the overvoltage/undervoltage protection value through a knob or button (such as overvoltage at 240V, undervoltage at 170V).

5. **Test the function**: Simulate overvoltage/undervoltage situations and observe the actions of the indicator lights and contacts.

2. **Precautions**

- **The neutral wire must be connected**: Some models rely on the neutral wire to detect the voltage, otherwise they cannot work.

- **Load matching**: The maximum load power of the 63A model is approximately 13.8kW (220V×63A), avoid overloading.

- **Grounding requirements**: It is recommended that the grounding resistance of the distribution box ≤ 4Ω to enhance safety performance.

VI. Fault Troubleshooting and Maintenance

Fault Phenomenon	Possible Reasons	Solutions
Indicator light not on	Power supply not connected or fuse blown	Check the wiring and replace the fuse
Frequent tripping	Voltage fluctuations exceed the protection range or the threshold is set improperly	Measure the actual voltage and recalibrate the threshold
Contact sticking	Load current exceeds the rated value or contact oxidation	Reduce the load and clean the contacts
Reset failure	Voltage has not recovered or the reset time is set too short	Wait for the voltage to stabilize and extend the reset time

VII. Purchase and Compliance Suggestions

1. **Certification Requirements**

- **Domestic market**: Needs to pass the CCC certification (such as Ganrui AVP-63).

- **Export market**: CE (YRO brand), CB (Keqiang brand) certification.

2. **Price Reference**

- **Unit price**: Approximately 20-50 yuan per unit (Bulk purchase is negotiable).

- **Accessory cost**: Fuse (Approximately 5 yuan per piece), Rail (Approximately 10 yuan per meter).

VIII. Industry Standards and Trends

1. **Related Standards**

- **IEC 61643-11**: Standard for low-voltage surge protective devices.

- **GB/T 18802.21**: Standard for overvoltage protective devices for household and similar applications.

2. **Technical Trends**

- **Smart networking**: Supports WiFi or Bluetooth and enables remote monitoring through a mobile APP (such as products in the Xiaomi ecosystem).

- **Energy-saving design**: Standby power consumption < 0.5W, in line with the EU ERP directive.

For further verification of parameters or to obtain a customized solution, it is recommended to provide specific application scenarios (such as load type, ambient temperature, installation method, etc.) to facilitate the recommendation of the optimal configuration.