Instructions for the Use of KY-380D Phase-missing and Phase-staggering Multifunctional Protector

　　

I. overview

　　KY-380D voltage-phase sequence multifunctional protector (also known as three-phase power supply monitor, phase-gap, phase-sequence protector, over-voltage protector, etc.) is mainly used for AC 50/60Hz, rated voltage below 480V, industrial three-phase 220V, 380V, 440V, 460V and other voltage levels of various fault detection, for three-phase input power supply voltage is too high, voltage is too low, phase-gap, reverse phase (phase sequence), three-phase voltage is not. Balance provides relay protection. Products are widely used in air compressors, motors, distribution boxes, water pumps, oil pumps, central air conditioning units, electronic control boxes, distribution cabinets, cranes, etc. For example, the protection of compressors in central air conditioning, power monitoring of various elevators, anti-phase missing and reverse phase protection of water pumps and oil pumps are indispensable for maintaining the normal working voltage of equipment in the operation of industrial equipment. Protective products.

　　

Ⅱ. Performance characteristics

　　○ This series of multi-functional protectors need no working power supply, simple wiring, high accuracy of detection voltage, stable and reliable performance. It can be used in 110 V-460 V 50/60 Hz power grid.

　　○ There are five indicators to indicate: normal, phase-out (voltage three-phase unbalance), inversion, over-voltage, under-voltage, and relay output.

　　○ Relay output with two different functions: normal operation output and fault alarm output.

　　○ Because the protector protects the voltage and its phase sequence, it can be applied to all kinds of power motors.

　　○ It is safe, convenient, dustproof and reliable by fixing the shell and fixing the chute.

　　

III. PROTECTIVE CHARACTERISTICS

　　1. Phase-absent protection: refers to the protection of the line in operation or non-operation state, any phase of the fault occurs, delay 2 seconds action.

　　2. Inverse phase protection: a protection measure to prevent A, B, C three-phase AC phase sequence error, delay 2S action.

　　3. Voltage unbalance protection: refers to a protective measure that three-phase voltage unbalance will affect the safe operation of the line. When the three-phase unbalance rate is equal to 100%>10%, the protection delay is 2S.

　　4. Overvoltage protection: refers to the protection line voltage higher than the set value, delay 4-7S action, recovery difference of 5-20VAC.

　　5. Under-voltage protection: refers to the protection line voltage below the set value, delay 4-7S action, recovery difference of 5-20VAC.

　　

IV. Major Technical Data

　　1. Main circuit:

　　○ Rated voltage: 220 VAC, 380 VAC, 440 VAC, 460 VAC. (Voltage should be specified when ordering)

　　○ Connecting wires of main circuit: insulated copper wires with load area of 1.0-2.5mm. If a single copper wire can be inserted directly into the terminal, if a soft wire is used, a needle-shaped terminal must be added to the conductor to ensure reliable connection.

　　2. Auxiliary Circuit:

　　○ It has two relays with different functions of back-output.

　　○ Contact capacity: 250 VAC 5A, 110 VDC 2A

　　○ Agreed heating current: 10A

　　○ Voltage Protection Range: Overvoltage Protection + 10%, Undervoltage Protection - 10%