GRID ELECTRICITY METERING DATA ACQUISITION
- Power Plants
- Substations
- Industrial Enterprises
- Power Distributors and Suppliers

MAIN FEATURES
- Highly reliable software and hardware design; Mono-structure; Excellent performance
- Real-time multi-task running mode based on real-time operating system VxWorks
- Powerful data processing and communications; Supports transparent communications
- Flexible user running mode; Supports multiple user tasks
- Adequate meter communications protocols; Extensible on customer requirements
- Flexible meter's physical interfaces
- Multi-protocols and simultaneous multi-central station communications
- Flexible communications, supports dial-up, dedicated and LAN communications
- Perfect events registration functions
- Different user access levels management; System security achieved by password protection
- Large screen LCD display; Interchangeable English and Chinese operation interface
- Convenient and easy remote maintenance functions
- Super capacity data storage space; Non-volatile data storage longer than 20 years
- A/C & D/C redundancy design; Seamless interchangeable without interruption

DATA ACQUISITION
 - Collecting energy meter's data at real-time
 - Timing tasks collecting energy meter's data
 - Collecting various energy meters data
 - Cycling data storage mode with sampling data or sampling cycle; Storage capacity configurable

EVENTS REGISTRATION
 - System reboot
 - System power outage; AC/DC power source interchanging
 - User operation info
 - System running info
 - Warning and error info

CLOCK SYNCHRONIZATION
 - Clock sync from remote central station
 - Clock sync from local GPS
 - Synchronize energy meters' clocks

ARCHIVE MANAGEMENT
 - ERTU archive management
 - Energy meters archive management
 - User info archive management

SCHEDULED TIMING TASKS
 - Energy meters clock sync task
 - Multiple energy data acquisition tasks
 - Timing data-send-back task
 - Task parameters can be customized

LOCAL OPERATIONS
 - Inquire electricity data and recorded events
 - configure and inquire running parameters

REMOTE OPERATIONS
 - Parameters configuration,
 - Remote diagnosis & maintenance

SECURITY
 - Different user access levels management; System security achieved by password protection

SELF DIAGNOSIS
 - Hardware and software watchdogs guarantee
  system's uptime and continuity of data acquisition

ERTU-BS02 TECHNICAL SPECIFICATIONS

 1. POWER
  Rated voltage  A/C 85 - 265V, 47-63Hz      
           D/C 120-330V
  power consumption  depends on configuration
           Normal 35W
           Maximum 75W
 2. ENVIRONMENTAL PARAMETERS
   Storage temperature    -25C - +70C
   Operating temperature  -20C - +55C
   Humidity        <= 90%
   Shock          IEC68-2-6
   Mechanical strength    IEC68-2-27

 3. INTERNAL REALT-TIME CLOCK WITH BACKUP BATTERYIES
   Time-keeping accuracy  < 0. 5 Sec / 24Hours
   Clock operating with battery  > 15 years  

 4. COMMUNICATIONS - METERS
   - Up to 4 RS-485, each supports up to 128 meters
   - up to 4 current loop, each for 4 meters
   - Up to 255 meters total

 5. COMMUNICATIONS - CENTRAL STATION
   - 10M Ethernet Interace
   - 2 RS-232 interfaces
   - Up to 3 embedded internal V90/56K modems

 6. INTEGRATION CYCLE
   Adjustable from 1 to 65535 (45 days) minutes

 7. MEMORY
   Flash disk 256M to 4G for data storage
   Up to 10, 000 cyclic events registration; Configurable

 8. DISPLAY
   320 x 240 matrix LCD

 9. CASE AND DIMENSION SIZES
   Case      Standard 3U, 19"
   Dimensions (mm)    483 x 320 x 132
   Weight      7. 25 Kg

 10. RELIABILITY
   MTBF      > 60, 000 Hours
   Service time      > 15 Years