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Phase Sequence Protection Relay

Good quality Single Phase Voltage Monitoring Relay for sales
Good quality Single Phase Voltage Monitoring Relay for sales
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Phase Sequence Protection Relay

China Phase Sequence Protection Relay supplier
Phase Sequence Protection Relay supplier Phase Sequence Protection Relay supplier

Large Image :  Phase Sequence Protection Relay

Product Details:

Place of Origin: CHINA
Brand Name: GINRI
Certification: CE,CCC
Model Number: JVR800-2

Payment & Shipping Terms:

Minimum Order Quantity: 20Pcs
Packaging Details: Voltage relay is standard seaworthy package,1pcs individual box or 5pcs in a middle box, 200pcs per carton. Base quotation is blank package. OEM design is acceptable
Delivery Time: 1-30 days upon order quantity
Payment Terms: L/C, T/T, Western Union,Paypal
Supply Ability: 20000Pcs per month
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Detailed Product Description
Measuring Circuit: L1,L2,L3 Rated Voltage: 208~480VAC,50/60Hz
Monitoring Functions: Overvolatege, Timer, Counter Overvoltage Setting Range: 200-600V
Undervoltage Setting Range: 150-500V Voltage Hysteresis: 1-20V

Over Voltage Three Phase Voltage Monitoring Relay With Timer And Counter


The voltage phase sequence protector (voltage monitor) is used to protect the voltage from the wrong phase (fault recognition protection, automatic phase sequence troubleshooting), phase failure, overvoltage, undervoltage, voltage unbalance  and some products ZHRV1 can be added PTC temperature protection and load side protection function, with self-reset and test function protector.


Phase failure: refers to the fact that the order of the phases is not in the correct order of the zero value of the alternating current from the negative value to the positive value.

Phase failure: Phase failure is a phenomenon in which one or more phases in the loop are disconnected, but not all phases lose voltage and no current. Or a phase voltage less than 60% of the rated voltage;

Overvoltage: The voltage (Umax-Ue)/Ue*100% exceeding the equilibrium potential of the electrode required for the discharge of ions on the electrode;

Undervoltage: The voltage required for ions to discharge on the electrode is lower than the equilibrium potential of the electrode (Umin-Ue)/Ue*100%;

Voltage unbalance: Indicates the difference in amplitude between three-phase voltages, or the phase shift from the normal voltage phase difference, or both; commonly used negative-sequence voltage or zero-sequence voltage and positive-sequence voltage The percentage of the ratio indicates the degree of voltage imbalance refers to the maximum or minimum voltage voltage deviation rate from the voltage average.


♦ Features

-- Compact modular 43mm housing
-- Microprocessor technology provides highly accurate and repeatable protection
-- Built-in LCD and keypad afford a precise digital setting
-- Adjustable over- and undervoltage,phase unbalance threshold
-- Independent adjustable delay time for overvoltage, undervoltage, voltage unbalance,
phase loss and phase sequence
-- Adjustable reset method:automatic reset or manual reset
-- Start delay(power-on delay)
-- Test trip with test button
-- 1 NO & 1CO contacts
-- with Timer and Counter for runing and faults
♦ Protective Function
-- Phase sequence
-- Phase loss
-- Overvoltage
-- Undervoltage
-- Voltage unbalance
-- Timer and Counter

♦ Typical Applications

● Pumps ● Fans ● Refrigeration Units
● Blowers ● Motors ● Compressors
● Lifts,Elevators ● Cranes
● Mining excavators and conveyors

♦ Typical Applications

Model JVR800-2
Measuring circuit L1,L2,L3
Rated voltage 208~480VAC,50/60Hz
Monitoring functions phase sequence, phase loss, overvolatege, undervoltage,voltage unbalance, timer, counter
Overvoltage setting range 200-600V
Undervoltage setting range 150-500V
Voltage hysteresis 1-20V
Delay time for overvoltage and undervoltage 0.1-30s
voltage unbalance ratio 1-50%
voltage unbalance hysteresis 1-10%
voltage unbalance delay time 0.1-30s
Delay time for phase loss 0.1-30s
Delay time for phase sequence 0.1-30s
Start delay time 0-999s
Auto reset mode ON/OFF
Auto reset time 0.1-999s
Timer and counter input AC/DC 80-450V
Indicators LCD indicating voltage,current,operation status
Output contacts 1 C/O,1NC
Contact capacity 6A ,250VAC
Dimensions (H x W x D) 80×43×54mm
Mounting DIN rail

Phase Sequence Protection Relay

Contact Details
Wenzhou Ginri Power Automation Co., Ltd.

Contact Person: sales

Tel: +8613757785251

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