Product Overview
Based on ATST Electric’s core concept of “Precise Control, Safe and Reliable”, SFMK03/SFMKA Phase Failure & Phase Sequence Device is developed to improve the safety and reliability of three-phase electrical systems.
The device continuously monitors the phase condition of the power supply and detects abnormal conditions such as phase loss and incorrect phase rotation. When a power phase fault occurs, the device can provide a protection signal to disconnect or control the related equipment, helping prevent reverse rotation, overheating and mechanical damage.
SFMK03/SFMKA is especially suitable for electrical systems containing motors and rotating equipment where correct phase sequence and stable three-phase operation are critical. With compact modular design, it can be easily integrated into control cabinets, distribution panels and industrial automation systems.
Main Features
1. Phase failure detection: Continuously monitors three-phase power status and detects missing phase conditions to improve equipment safety.
2. Phase sequence protection: Identifies incorrect phase rotation and helps prevent reverse operation of three-phase motors and rotating equipment.
3. Reliable protection function: Provides fast response to abnormal power conditions and helps reduce equipment damage caused by electrical faults.
4. Three-phase system monitoring: Designed for industrial electrical systems requiring stable and reliable power supervision.
5. Compact modular structure: Space-saving design allows easy installation in control cabinets and electrical distribution panels.
6. Simple wiring and commissioning: Clear terminal design makes installation and maintenance more convenient for electricians.
7. Stable long-term operation: Suitable for continuous monitoring applications in industrial and commercial environments.
8. Wide application compatibility: Can be integrated with motors, pumps, compressors and various automation control systems.
Application Scenarios
1. Motor protection systems: Used for three-phase motors to prevent damage caused by phase loss or incorrect phase sequence.
2. Pump control systems: Suitable for water pumps, circulation pumps, drainage pumps and industrial pump equipment requiring phase protection.
3. Compressor systems: Applied in air compressors and refrigeration equipment to prevent reverse rotation and abnormal operation.
4. Industrial automation equipment: Used in production lines, machine tools and automated equipment requiring reliable three-phase power monitoring.
5. HVAC systems: Suitable for fans, cooling systems and air conditioning equipment with three-phase motors.
6. Electrical control cabinets: Installed in distribution cabinets and automation panels as a protection component for three-phase loads.
7. Building and infrastructure facilities: Applied in elevators, ventilation systems and other electrical equipment requiring stable power supply.
Technical Date
| Supply voltage | 220VAC(35%, 3Phases+N, 50/60Hz) |
| Contacts type | 1 Inversor, 10A, 250VAC |
| Hysteresis | 20%(Asymmetry Value) |
| Power consumption | <7VA |
| Ambiant temperature | -5~+55°C |
Wiring Diagram
Dimensions
