Product Overview
• Product Name: Bulletin 813S Three-Phase Voltage Monitoring Relay
• Model: 813S-V3-400V
• Type: Three-phase voltage monitoring relay (utilizing TRMS technology)
• Main Functions: Used to monitor overvoltage, undervoltage, phase sequence, phase loss, asymmetry, and tolerance in three-phase systems. The device is self-powered, requiring no external power supply, and is suitable for industrial motor protection systems.
• Applicable Voltage: 380...415V AC (nominal voltage 400V)
• Key Features: Built-in LED status indicators, adjustable delay times, and support for latch and inhibit functions to ensure reliable triggering of the output relay in case of abnormal voltage conditions.
Detailed Specifications
• Input Specifications:
◦ Input Terminals: Terminals L1, L2, L3, N
◦ Power Supply Range: 380...415V AC
◦ Power Supply Method: Self-powered
◦ Frequency Range: 50...400 Hz
◦ Monitoring Range Settings:
▪ Upper Level: 2...22% of nominal voltage (adjustable)
▪ Lower Level: -22...+2% of nominal voltage (adjustable)
▪ Asymmetry: 2...22% of nominal voltage (adjustable)
▪ Tolerance: 2...22% of nominal voltage (adjustable)
◦ Hysteresis:
▪ Setting Point 2...5%: 1%
▪ Setting Point 5...22%: 2%
• Output Specifications:
◦ Contact Type: (2) Form C, Normally Energized (double-pole double-throw, normally closed contacts)
◦ Rated Insulation Voltage: 250V AC
◦ Rated Operating Power: 13 VA @ Δ 400V AC, 50 Hz
• General Specifications:
◦ Power ON Delay: 1 s ± 0.5 s or 6 s ± 0.5 s (optional)
◦ Environmental Characteristics:
▪ Degree of Protection: IP 20
▪ Pollution Degree: 3
◦ Physical Dimensions: 45 mm (width) × 80 mm (height) × 99.5 mm (depth)
◦ Screw Terminals Torque: Maximum 0.5 N-m