DJGL33-GK760G Ⅱ type concentrator ( wireless public network GPRS)

      DJGL33-GK760G Ⅱ type concentrator ( wireless public network GPRS)

DJGL33-GK760G Ⅱ type concentrator ( wireless public network GPRS)

Product Overview

DJGL33- GK760G Ⅱ  type concentrator (wireless public network GPRS) using high-performance  32-bit ARM9 core hardware platform , independent embedded operating  system with powerful spatial expansion and system upgrades . It can be  set or timing of the data collected and stored energy meter , and  through the wireless module (GPRS) to exchange data with the master. It  has a 32M large data storage space , and to ensure data can be stored  for 10 years after a power failure is not lost. Terminal has a  far-infrared , RS485 communication interface , etc. , and have a  complete self-recovery circuit design, to ensure that the device is  working , prevent crashes. The terminal uses advanced ultra-low power  LSI technology and SMT manufacturing high-tech products , the key  components of selected international brands of long-life components, and  improve product reliability and longevity.

Principle diagram

Concentrator can  receive clock to measure the main station and called on command .  Remotely or locally set and query meter reading programs, such as  concentrators acquisition cycle time meter reading , data acquisition  and other items . Concentrator according to event properties set by the  events important events and the general classification of recorded  events Atmospheric pressure: 63.0kPa ~ 108.0kPa (4000m above sea level  and below).

Functional Description

1. Data acquisition

Concentrators  collect real-time power meter shows the value of each , 0:00 freeze  power indication , 0:00 freeze electricity meter indication . Energy  data with a time stamp when saving

Concentrator using the following method to collect data meter :

a) real-time collection : focus directly collect the appropriate data entry specifies the meter .

b)  regular automatic collection : concentrator automatically collect meter  data logger or master plan according to meter settings.

c)  automatically fill copy : concentrator within the stipulated time to  read the data not copied automatically fill the meter should copy  function . When completing copy fails, generating an event record , and  to report to the master depending on the setting .

2 .data management and storage capabilities

Concentrator  for collecting data to classify stored data is divided into day freeze ,  freeze meter reading data , curve data, historical monthly data. Data  density curve freeze 1h 

Climatic conditions Classification:

Atmospheric pressure: 63.0kPa ~ 108.0kPa (4000m above sea level and below).

3.parameter settings and query functions

Terminal  equipment can withstand the normal operation and mechanical vibration  and shock under normal conditions of transport without causing failure  and damage. Mechanical vibration strength requirements :

- Frequency range : 10Hz ~ 150Hz;

- Displacement amplitude : 0.075mm ( frequency ≤60Hz);

- Acceleration amplitude : 10m / s2 ( frequency 60Hz).

4. Electromagnetic Compatibility

Concentrator  can withstand conducted and radiated electromagnetic disturbances and  the effects of electrostatic discharge , and equipment without damage ,  and it works fine .

Electromagnetic  compatibility test items include : voltage dips and short interruptions  , power frequency magnetic field immunity , RFEMS RF field induced  immunity to conducted disturbances , electrostatic discharge immunity ,  electrical fast transient burst immunity , damping oscillation immunity ,  surge immunity .

5. Continuous power stability

Concentrated  in normal working condition continuously energized 72h, 72h during the  sampling tests conducted every 8h, its functions and performance ,  measure AC voltage and current level of accuracy to meet the  requirements .

6. Reliability index

Concentrator mean time between failures (MTBF) of not less than 7.6 × 104h.

In  the non-communication state , collector consumes no more than apparent  power 5VA, real power is not greater than 3W; concentrator apparent  power consumption is not more than 15VA, real power is not greater than  10W.

8. Insulation resistance

Concentrator  each electrical circuit for insulation resistance between ground and  each electrical circuit in the following table

                                                 Wiring core terminal function identification