Ensure comprehensive protection for your three-phase four-wire power systems and electrical equipment with the STVP-932 Adjustable Voltage Protector. Designed with advanced multifunctional capabilities, this automatic reset protector safeguards against overvoltage, undervoltage, overcurrent, phase sequence errors, phase breaks, and three-phase current and voltage imbalances. Its reliable performance and user-friendly features make it an essential device for maintaining electrical safety and system stability. Key Features: · Multifunctional Protection: Integrates overvoltage, undervoltage, overcurrent, three-phase voltage unbalance, phase sequence, and phase-break protection in one compact unit to prevent equipment damage effectively. · Automatic Reset Function: Instantly cuts off power during fault conditions and automatically restores power once voltage returns to normal, ensuring seamless operation without manual intervention. · Adjustable Settings: Customize protection thresholds including overvoltage (221V-300V), undervoltage (150V-219V), and response times (0.1 to 10 seconds) to suit specific application requirements. · Fault Inquiry and Monitoring: Equipped with an LCD display and segment character fault indication for easy status monitoring and fault diagnostics. · Versatile Installation: Designed for rail mounting, compatible with TT, TN-S, and TN-C-S grounding systems, and suitable for various industrial and commercial electrical setups. · Durable and Reliable: Constructed with high-quality plastic material and electrical isolation strength exceeding 2000VAC, ensuring long-lasting durability and safety under harsh conditions. · Wide Operating Environment: Functions efficiently in temperatures from -20℃ to 50℃, humidity below 85%, and altitudes up to 2000 meters, suitable for diverse environments. Specifications: · Model: STVP-932 · Material: Plastic · Rated Voltage: Three-Phase Four-Wire 230V/400VAC, 50/60Hz · Current Rating Options: 50A, 63A, 80A · Overvoltage Protection Range: 221V-300V (default OFF at 280V) · Overvoltage Recovery Range: 220V-299V (default 250V) · Undervoltage Protection Range: 150V-219V (default OFF at 160V) · Undervoltage Recovery Range: 151V-220V (default 180V) · Adjustable Protection Action Times: 0.1 to 10 seconds (default 0.2 seconds for both overvoltage and undervoltage) · Three-Phase Voltage Unbalance Protection Range: 10%-50% (default OFF) · Phase Voltage Unbalance Protection Action Time: 0.1 to 10 seconds (default 1.0 second) · Power-On Delay Time: 2 to 255 seconds (default 2 seconds) · Failure Recovery Delay Time: 2 to 512 seconds (default 60 seconds) · Display: LCD with segment character fault indication · Sampling Method: AC sampling of phase line to neutral line resistance partial pressure · Grounding System Compatibility: TT, TN-S, TN-C-S · Installation: Rail mounting · Electrical Isolation Strength: >2000VAC, pulse 2.5KV 1.2/50μS · Operating Temperature: -20℃ to 50℃ · Humidity: <85% · Altitude: Up to 2000 meters · Size: Approx. 72 x 80 x 65 x 43 x 45 x 35 mm (various dimensions detailed) Package Includes: · 1 x Adjustable Voltage Protector STVP-932 The STVP-932 Adjustable Voltage Protector offers stable performance, comprehensive multi-function protection, and easy operation, making it an ideal choice for safeguarding your electrical systems against voltage irregularities and ensuring reliable power supply continuity.