Voltage control and phase sequence protection relay | 3F | 10A | 220-460V (P-P) | Geya

Technical Specifications

Voltage: 220V-230V-240V-380V-400V-415V-440V-460V (P-P)
Rated supply frequency range: 45Hz-65Hz
Voltage measurement range: 176V-552V
Voltage regulation range: 2%-20% of nominal voltage (Un)
Asymmetry threshold adjustment: 5%-15%
Hysteresis: 2%
Phase failure threshold: 70% of Un (minimum 165V)
Time delay range: 0.1s–10s (±10%)
Voltage accuracy: ≤1%
Startup delay: 0.5s
Combined setting accuracy: 10% of the scale value
Supply indication: green LED
Output indication: red LED
Output contact: 1×SPDT
Rated current size: 10A (AC1)
Switching voltage: 250VAC/24VDC
Minimum break capacity DC: 500mW
Temperature coefficient: 0.05%/°C (20°C)
Mechanical life: 1×10⁷ switching cycles
Electrical life (AC1): 1×10⁵ switching cycles
Operating temperature: -20°C to +55°C
Degree of protection: IP40 front, IP20 terminals
Mounting: DIN rail (EN/IEC 60715)
Protection category: III
Pollution degree: 2
Maximum cable size: 1×2.5mm² (solid wire), 2×1.5mm² (with cap)
Mounting torque: 0.8Nm
Dimensions: 90x18x64mm
Weight: 61g-66g

Application
The relay is an ideal protection system for various industrial and agricultural equipment that are sensitive to phase sequence errors, voltage fluctuations, and phase failures. It is commonly used in:

Industrial Equipment Protection: In industrial installations such as production lines, pumps, conveyors, and various mechanisms where stable and correct power supply is crucial.
Agricultural Equipment: Used in farms and agricultural machinery, where protection from phase failure is needed to avoid costly equipment damage.
Refrigeration Equipment: Used in the refrigeration industry (e.g., truck refrigerators) to ensure proper voltage and phase sequence control.
Safety Systems: Suitable for protecting personnel and equipment from excessive or negative voltage, phase failures, and incorrect phase sequences, which can pose a risk to operational safety.
Pros

Protection against phase sequence errors: The relay automatically switches to the correct phase if an incorrect phase sequence is detected, ensuring safe and efficient equipment operation.
Wide voltage range: The relay supports a wide range of voltages (220V-460V), making it suitable for different power supply systems and adaptable to various devices.
Adjustable thresholds and delay times: The ability to adjust voltage thresholds, asymmetry limits, and delay times provides flexibility in adapting the relay to specific needs.
High reliability and durability: With high mechanical and electrical life spans (1×10⁷ and 1×10⁵ switching cycles), this device ensures long-term reliability and minimal maintenance needs.
Easy installation: The relay can be easily mounted on a DIN rail, making its integration into existing systems simple.
Indications and monitoring features: LED indicators provide easy monitoring of the system’s status, allowing users to quickly assess the system's condition and react to potential failures.
Cons

Not suitable for high-voltage systems: This device is designed only for low-voltage systems (up to 552V), making it unsuitable for high-voltage industrial equipment.
Complex configuration: Proper setting of voltage and thresholds may be challenging for users without the necessary knowledge or experience.
Limited phase failure detection: While the relay effectively detects phase sequence errors and phase failures, it does not protect against other possible electrical system issues such as overloads or short circuits.
Conclusion
Voltage control and phase sequence relays are ideal for protecting equipment from phase sequence errors, phase failures, and voltage fluctuations. Their broad adjustment options, high reliability, and durability make them an excellent choice for industrial, agricultural, and refrigeration systems. While not intended for high-voltage systems, their functionality and reliability provide effective and safe equipment protection.