JVRD series 3 phase sequence voltage protection device ( Voltage and Phase Relay )

3 phase sequence voltage protection device 1,Phase Loss protection 2,Phase sequence protection 3,Phase unbalance protection

JVRDphase sequence voltage protection device(Voltage and Phase Relay)Features:1,Phase Loss protection2,Phase sequence protection3,Under voltage protection4,Over voltage protection

5 Model and meaning1.Full Function Protector Series

4,Phase unbalance protectionDimensions(mm):79H×23W×79DWarning! This product is generally a three-phase power supply side of the sample, shall not be installed in the inverter current output side!1 Product OverviewJVRD series multi-function phase sequence voltage protection (also known as three-phase power supply monitor, phase sequence protection, over voltage protection, etc.) mainly for the exchange of 50/60Hz, rated voltage 460V below, industrial three-phase 220V, 380V, 440V, 460V and so the voltage levels of a variety of fault detection, on the three-phase input power supply voltage is too high, low voltage, phase, reverse phase (phase sequence), to voltage unbalance relay protection, products are widely used in air compressor, electric motors, power distribution boxes, pumps, fuel pumps, central air conditioning units, electrical control boxes, distribution cabinets, cranes, etc., such as central air-conditioning compressor protection, monitoring of various power lifts, water pump, oil pump anti-phase , reverse phase protection, maintenance of industrial equipment operating in the normal operating voltage equipment indispensable protection products. This product complies with GB14085.5-2001 eqv IEC60947-1: 1999 standard.2 Structural Features1) Installation: The base is made of rail protectors, equipped with two M4 screw structure, direct and independent installation or HT35 rail mounting.2) light: the five lights are to indicate: normal phase (phase voltage imbalance), reverse phase, overvoltage, undervoltage.3) Dimensions:79mm×23mm×79mm.3 Protection Features1) The lack of protection: it means the protection circuit in the running state or running state, the occurrence of any one phase open phase failure, delay 2S action. 2) reverse protection: to prevent L1, L2, L3 connected three-phase fault of a phase sequence protection, delay 2S action.3) voltage unbalance protection: three-phase voltage imbalance that will affect the safe operation of a circuit protection, phase unbalance= ×100%> 10%, protection delay 2S action.4) Over voltage protection: it means the protection circuit voltage higher than the set value, delay 3 ~ 8S action to restore back to the difference of 6 ~ 20VAC.5) voltage protection: it means the protection circuit voltage below the set value, delay 3 ~ 8S action to restore back to the difference of 3 ~ 20VAC.4 Main technical data1) Main circuit:          1. Rated voltage: 220VAC, 380VAC, 440VAC, 460VAC.          2. The main circuit cable: insulated copper wire, which set out an area of 1.0 ~ 2.5mm. If the single strand copper wire into the terminal directly; the use of a soft line, you must add a wire needle lugs to ensure reliable connection.2) The auxiliary circuit:         1. can not be separated with a electrical normally open and one normally closed contact.         2. Use categories: AC15, Dc13         3. Contact capacity: 250VAC 6A, 30VDC 3A4) Conventional thermal current: 6A 

JVRD series 3 phase sequence voltage protection device ( Voltage and Phase Relay )