
Undervoltage Three Phase Voltage Monitoring Relay 5 LED Lights For Status Indication
All electric appliances are very sensitive when using the grid voltage is too high too low, whether industrial equipment or household appliances have a rated voltage, the voltage range is usually specified as 170V-240V (can be seen on the nameplate or instructions of the electrical equipment). If this voltage is exceeded, the insulation strength and pressure resistance of the electric appliance are exceeded, and the electric appliance will thus generate heat, breakdown and burn or even cause a fire. At present, due to the theft of the zero line, aging equipment, technical failures, human failures, natural disasters, power outages, and other reasons, the voltage instability, the voltage is too low, resulting in a large number of electrical appliances are burned out and burned in large areas, People have suffered heavy losses, no claims, and labor and people’s misfortune have come one after another. Yimin’s overpressure, overpressure, and undervoltage protectors (also known as electrical protectors) should be added to prevent electrical fires and protect the safety of lives and property.
■Features:
● Overvoltage protection ● Undervoltage protection
■Application:
The products are widely used in oilfields, mines, and various
industrial and agricultural areas.
■ Structural features:
1. The protector base adopts rail type, and two M4 screw holes
structure are installed directly or independently.
Rail installation.
2. Indicator light: It is indicated by 3 LEDs: normal, overvoltage,
undervoltage.
3. Overall dimensions: 68mm x 30mm x 76mm.
◆ Typical application
● Electric motor ● Fan ● Water pump ● Air compressor ● Crane
● Driving ● Lifts ● Cranes ● Elevators ● Machine tools
● Central air conditioning ● Refrigeration equipment ● Laser
equipment ● Industrial control system
◆Selection instructions
JVRD - □ □
1 2
1. Rated voltage: 220,380,440,460,480
2. Over and under pressure code: Empty, A, B, C, T (See the
following table)
Empty - Overvoltage + 15%, Undervoltage - 15%
A- Overvoltage +10%, Undervoltage-10%
B- Overvoltage +12.5%, Undervoltage -10%
C- Overvoltage +15%, Undervoltage-12.5%
T- over-voltage value specified by the customer
♦ Technical data
Type | JVR-384 |
Input circuit=Measuring circuit | L1,L2,L3 |
Rated voltage | 220VAC,380VAC 440VAC,480VAC,50/60HZ |
Monitoring functions | overvoltage,undervoltage |
Voltage setting range | Overvoltage:+15%,Undervoltage:-15% |
Voltage hystersis | 5-8% fixed |
Dielectric strength | 1000000 cycles |
Reset time | 100ms |
Indicarors | Phase sequence,phase loss overvoltage,undervoltage,normal |
Dimension(HxWxD) | 68X30X76mm |
Output contacts | 1C/O |
Mounting | Din Rail |
Wenzhou Ginri Power Automation Co., Ltd.
GINRI POWER AUTOMATION CO.,LTD. is a professional production voltage phase sequence protection
device (and name: three-phase power monitor), and PLC output zoom
Board, and smart type motor integrated protection device, and
industrial parts manufacturers, technology development team in
elevator industry, and refrigeration industry, and crane industry,
environmental equipment, mechanical NC industry and the industrial
following insurance industry, field has more than 10 years practice
experience, has development out variety price economic and function
excellent of products. CQC product quality system by China Quality
Centre (3C) certification and CE certification, products in the
manufacturing process in strict accordance with the ISO9001 quality
assurance system requirements and professional technical and
service support.
Voltage phase-sequence protection for many years (equipment,
refrigeration equipment, crane (passenger and goods) elevators,
control of DC power supply system (Cabinet) screens, precision air
conditioners, room air conditioners, electric hoist, boiler
equipment, laser equipment, parking equipment, cranes, compressors)
and so on using the run.
PLC output amplifiers (environmental protection equipment,
numerical control and automation equipment, automobile, plastic
machinery, hydraulic machinery, ceramic foam machinery, woodworking
machinery, machinery) and so on using the run.
Years of integrated Intelligent motor protector (power plants,
paper mills, steel mills, aluminium plants, cement plants, sewage
treatment plants, coal preparation plants, refineries,
petrochemical plants), and so on using the run.
Product quality is stable and safe, reliable, and earned a solid
market position in the market and a high reputation in the
industry, received unanimous recognition and praise of our
customers.
Ginri company always adhere to "scientific management as the core,
the user needs for the Centre to focus on product quality,
meticulous service is sincere," the spirit of enterprise, please
call us from all walks of life, thank you!