Voltage and Phase Sequence Protection Relay | 5A | 230VAC

Technical Specifications:

Operating Voltage: 220V AC
Frequency: 50/60 Hz
Power: <6 VA
Operating Temperature: -20°C ~ +55°C
High Voltage Setting (U>): 230V – 300V (with option to disable)
Low Voltage Setting (U<): 150V – 210V (with option to disable)
Delay Time: 0.5 s – 20 s
Reset Time: 0.5 s – 20 s
LED Display: 3 LED diodes indicating system status
Connection Type: Terminal connections
Contacts: 5A/250V AC (for resistive loads)
Cable Cross-Section: 2.5 mm²
Weight: Maximum 100g
Mounting: Vertical mounting on panel or DIN rail
Altitude above sea level: <2000 meters

Application

Voltage Protection: Used to protect various devices that are sensitive to voltage fluctuations, such as computer systems, refrigerators, climate control equipment, and other devices that require stable voltage.
Industrial Systems: Suitable for industrial equipment where voltage fluctuations are likely, and inaccurate voltage levels may cause serious failures or reduce system efficiency.
Home Appliances: Used in homes and commercial spaces to protect sensitive devices from electrical supply inaccuracies, such as in computers, televisions, and other household technologies.
Protection Solutions: This relay ensures effective protection against voltage spikes and drops, making it particularly useful in electrical systems with frequent voltage changes or unstable supply conditions.

Advantages

Automatic Reset: The relay features automatic reset to ensure continuous equipment operation as soon as the voltage returns to normal, eliminating the need for constant manual intervention.
Wide Voltage Setting Range: The ability to adjust both high and low voltage settings provides great flexibility and adaptability for various devices, ensuring they only operate with stable and safe voltage.
Fast Switching Time: The switching time is under 30 ms, ensuring a rapid response to voltage fluctuations and preventing damage to equipment.
Compact and Lightweight Design: The compact design allows for easy installation in both indoor and outdoor conditions, mounting on a DIN rail or other industrial equipment locations.
Voltage Monitoring with LED Indicators: Three LED indicators clearly show the system's status (normal operation, overvoltage, undervoltage), enabling users to quickly understand the situation.
Disadvantages

Limited Usage: The relay is designed only for single-phase systems and cannot be used in three-phase equipment, which limits its application based on type and voltage requirements.
Undesirable Low Voltage Threshold: If the voltage drops below 140V (with the low voltage function enabled), the relay will switch off, but in some cases, this could result in unnecessary shutdowns and equipment malfunction.
Requires Additional Protection: While the relay protects against voltage fluctuations, additional equipment (such as fuses or circuit breakers) may be needed to ensure greater equipment safety.
Difficult Customization for Specific Systems: Some users may find it challenging to set the appropriate delay and reset times based on specific system requirements, requiring preliminary setup and optimization.
The voltage control relay is an excellent solution to protect various devices and equipment from voltage fluctuations. It ensures that devices operate only with safe voltage, protecting them from potential failures due to overvoltage or undervoltage. Adjustable settings, fast switching time, and automatic reset make this relay an ideal choice for both industrial and household appliances. However, proper configuration of all parameters is essential to achieve optimal operational efficiency.