TVR2000-3 voltage phase sequence multi-function protector is also called three-phase power monitor, phase sequence protector, over-voltage and undervoltage protector. Mainly used for AC 50/60Hz, rated voltage below 460V, industrial three-phase 220V, 380V, 440V, 460V and other voltage levels of various fault detection. Provides relay protection for high voltage, low voltage, phase loss, reverse phase (phase sequence), and three-phase voltage imbalance of the three-phase input power supply.Features:1. Widely used in air compressors, electric motors, distribution boxes, water pumps, oil pumps, central air conditioning units, electric control boxes, power distribution cabinets, cranes, etc.2. Such as central air conditioning compressor protection, power monitoring of various elevators, phase loss of pumps and oil pumps, reverse phase protection, etc.3. It is an indispensable protection product for the normal working voltage of the maintenance equipment in the operation of industrial equipment.4. Installation method: The base of the protector adopts the rail type, and there are two M4 screw holes in the structure, which can be directly installed separately or installed on the HT35 rail.5. Indicator light: Indicated by 5 indicators: normal, lack of phase (voltage three-phase unbalance), reverse phase, overvoltage, undervoltage.6. Phase loss protection: When the protected line is in the running state or non-operating state, any phase failure occurs, and the delay is 2S.7. Reverse phase protection: A protection measure to prevent L1, L2, L3 three-phase AC phase sequence from being connected incorrectly, delay 2S action.8. Voltage unbalance protection: It refers to a protection measure that the three-phase voltage imbalance will affect the safe operation of the line. When the three-phase unbalance rate x100%>10%, the protection delay 2S action.9. Overvoltage protection: It means that the voltage of the protected line is higher than the set value, and the delay is 3~8S, and the recovery is 6~20VAC.10. Undervoltage protection: It means that the voltage of the protected line is lower than the set value, the delay is 3~8S, and the recovery is 3~20VAC.Specification:Condition: 100% Brand NewItem Type: Circuit Protection RelayDimensions: Approx. 68 x 30 x 76mm / 2.7 x 1.2 x 3inMain Circuit:Rated Voltage: 440VACConnecting wires of the main circuit: The insulating copper wire has a carrying area of 1.0 to 2.5 mm. If a single strand of copper wire can be directly inserted into the terminal; if a cord is used, a needle type terminal must be added to the wire to ensure reliable connection.Auxiliary Circuit:1) A normally open and a normally closed contact that is electrically inseparable.2) Use Category: AC15, DC133) Contact Capacity: 250VAC 3A, 30VDC 1.5AConventional Thermal Current: 5AVoltage Protection Range:2000 - over voltage protection +15%, under voltage protection -15%Package List:1 x Circuit Protection Relay1 x Instruction ManualNote:1. Since this protector is only protected against voltage and its phase sequence, it can be applied to motors of various powers.2. This product is generally sampled on the power side of the three-phase power supply and must not be installed on the output side of the variable frequency current..