
Phase Unbalance Current Monitoring Relay Integrative Structure For Compressors
♦ Features
-- Integrative structure
-- Three-phase monitoring of overload, phase loss, phase unbalance
-- Powered by the measuring circuit
-- 1 NC SCR output contact
-- 4 LEDs for status indication
♦ Protective Functions
-- Overload
-- Phase loss
-- Phase unbalance
♦ Typical Applications
• Pumps • Fans
• Blowers • Motors
• Compressors
♦ Approvals
• CE • CCC
Normal operating conditions and installation conditions
1, the ambient temperature: -25 °C ~ +65 °C.
2, the working frequency: 45 ~ 60Hz.
3, working voltage: 24V ~ 380V.
4, the output interface load capacity: AC380V 1A, COSΦ = 0.3 ~ 0.4.
5, installation size: in line with JR16 thermal relay standards.
6, installation location: any angle of installation and protection
class IP40.
The protector adopts the core-type current sampling detection technology, thyristor output, simple structure, convenient use, reliable operation, and has the advantages of no power consumption, long life, no arc generation during operation, etc. It is the ideal replacement for thermal relay in China. Motor protection products
The main cause of overload is the improper selection of the
conductor cross-section, and the actual load has exceeded the
safety current of the conductor.
Too many high-power devices are connected to the line, which
exceeds the load capacity of the distribution line.
Lighting lines in important material warehouses, residences, and
public buildings may have power lines that may cause long-term
overloading of wires or cables, and when insulated conductors with
a burn-proof jacket are used for laying on flammable or
hard-to-burn building components. , should take overload
protection. Line overload protection should adopt automatic switch.
During operation, the setting current of the automatic switching
long-delay operation should not exceed the long-term allowable load
current of the line. If a fuse is used for overload protection, the
rated current of the fuse melt shall not be greater than the
long-term load current of the line. When the automatic switch is
used as the protection device, its current release should be
installed on the phase line in the neutral three-phase four-wire
system; in the neutral three-phase four-wire system, It is allowed
to be installed on two phases; ungrounded two-phase two-wire system
allows installation on one phase.
In a communication power system, the function of automatically
disconnecting the power supply due to a large load is called
overload protection.
♦ Technical data
Type | JDB-1 |
Current range | 2.5-5A,4-10A,8-20A,16-40A,32-80A, 63-160A,150-300A |
Startup delay | 5s,10s,20s |
Protective functions | overload,phase loss,phase unbalance |
Setting method | by knob |
Indicators | ABC overload&phase loss |
Output contacts | 1NC(SCR output) |
Contact capacity | 1A 380VAC |
Operating voltage of control loop | AC220V or AC380V |
Dimensions(H*W*D) | 2.5-40A:38*90*63mm 80-300A:44.5*123*67mm |
Mounting | screw fixing |
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!