
Reliance on the disappearance of a current in a phase conductor of a polyphase circuit to disconnect a protected device or rely on the loss of one or more phases of a polyphase system to prevent a protection device that applies power to a protected device, also known as a protection device. Phase protector, phase loss protector.
This type of detection voltage can also be called three-phase power supply monitor, phase sequence protector, over voltage protection device, etc.) 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, the three-phase input power supply voltage is too high, voltage is too low, lack of phase, phase failure, reverse phase (phase sequence), three-phase voltage imbalance, etc. to provide protection relay products Widely used in distribution boxes, central air-conditioning units, electric control boxes, power distribution cabinets, cranes, etc., such as central air-conditioning compressor protection, power monitoring of various elevators, pumps, oil pumps against phase loss, reverse phase protection, etc. An indispensable protective product that maintains the normal working voltage of the equipment during operation.
-- Built-in LCD and keypad afford a precise,digital setting-- Three-phase monitoring of phase sequence, phase loss, over- and undervoltage and phase unbalance-- Adjustable over- and undervoltage, phase unbalance threshold-- Independent adjustable delay time for overvoltage, undervoltage, phase unbalance-- Powered by the measuring circuit-- 1 NO & 1NC contacts-- Faulure recording
♦ Protective Functions
-- Phase sequence
-- Phase loss
-- Phase unbalance
-- Overvoltage
-- Undervoltage
Applications Pumps / Fans Blowers / Motors / Compressors ,have the CE CCC Certain ,make sure every product Quality ,Meet industry standards
♦ Technical data
Type | JVR1000 |
Measuring circuit | L1,L2,L3 |
Rated voltage | 380VAC ,50Hz |
Monitoring functions | phase sequence, phase loss, overvolatege, undervoltage,phase unbalance |
Overvoltage setting range | 390-490V adjustable |
Undervoltage setting range | 300-470V adjustable |
Hysteresis | 10V |
Delay time for overvoltage and undervoltage | 0.1-25s adjustable |
Phase unbalance setting range | 5%-29% adjustable |
Delay time for phase unbalance | 1-25s adjustable |
Delay time for phase loss | 1s |
Delay time for phase sequence | instant |
Indicators | LCD indicating voltage,current,operation status |
Output contacts | 1 NO,1NC |
Contact capacity | 6A ,250VAC |
Dimensions (H x W x D) | 80×40×54mm |
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!