DTU power distribution network feeder automation device with with
characters of high stability and reliability
DTU power distribution network feeder automation device is used for
terminal monitoring for RMU, small switching station,can connect
with master station and realize the electrical signal gathering and
control from multi-lines, fault detection, fault area location,
isolation and non-fault area power restore to improve power supply
reliability.
DTU power distribution network feeder automation device is with a
hardware platform of 32 bits of microprocessor of high-performance,
is with embedded real-time operation as a software development
platform, also with characters of high stability and reliability ,
high performance,high intensity and low cost and easily
installation.
The mechanical structure is double-case type,outer case is in a
whole with function of anti-rain and anti-dust, inner layer adopts
module mechanical case,easily installed,with clear structure,outer
case is 1400mm×600mm×400mm,1000mm×600mm×350mm,750mm×600mm×300mm
etc.(can be customized), the inner case adopts standard 6U
mechanical case(some switching station can be directly installed
inner case).the appearance design can be flexible as client’s
requirement.
basic performance index
1.whole device power consumption
1)whole device power consumption not above 30W.
2.serial interface
1)Asynchronization RS232 interface:there are 4 pieces of general
interface. One of them can be configured as RS485 interface.
3.Ethernet interface
1)10M Ethernet RJ45 interface 2 pieces(industrial grade switch
interface,can constitute Ethernet bus.
4.USB interface(reserved)
1)Through USB save more data
5.Communication Protocals
1)Serial interface:CDT,IEC60870-5-101 protocals etc.
2)Ethernet interface:based TCP/IP of IEC60870-5-104 protocal etc.
Technical Parameters:
| rated data: | electrical insulation performance |
- Working voltage: AC220V, DC110V,DC24V( Noted when make order)
- Measurement voltage:AC220V, DC24V
- measurement current:AC5A,1A.
- Rated frequency:50Hz.
| - Device can bear medium strength test specified by GB/T14598.3-1993
that AC Voltage is 2KV(strong current circle)or 1KV(weak current
circuit),frequency is 50HZ, Time duration is 1 min.
- Use 500V megameter to test device insulation resistance, normal
condition ≥5MΩ,humid condition is ≥1MΩ
|
| Function: | EMC performance: |
- Power consumption conforms to DL/T478-2001 ruled normal works
condition
- Power circuit power consumption ≦30W
- measurement voltage for each phase ≦ 0.5VA. Testing protection
current, when rated current is 5A, each phase ≦1VA;when rated
current is 1A, each phase ≦0.5VA.
| - device is conform to DL/721-2000:
- Voltage sudden decrease and voltage break applicable
ability:GB/T15153.1
- anti-surge shock test:GB/T15153.1-IV.
- radiation electromagnetic field interference:GB/T15153.1-IV.
- Fast instant-change interference: GB/T17626.4-IV.
- pulse group interference: GB/T15153.1-IV.
- static discharging interference: GB/T15153.1-IV.
|
| measurement accuracy: | ambient temperature: |
- AC measurement current:grade 0.5.
- AC measurement voltage:grade 0.5.
- DC current:grade 0.5.
- DC Voltage:grade 0.5.
active power, reactive power frequency:grade 1.0. | - working range:-40℃～+70℃.
- relative humidity: 5％～95％, no condensation.
- atmosphere pressure: 70kPa～106kPa.
|
There is type test report for it, test items as following:
Type Test Items
| 1. appearance and structure 2.function 3. electrical device
performance 4.low temperature performance 5.high temperature
performance 6.alternating temperature humidity7.vibrationendurance
8.incline drop test 9. electrical device life 10. static
electricity and elecro-discharge immunity test 11.radio frequency
electromagnetic field radiated immunity test 12.surge impact
immunity test 13. power frequency magnetic field immunity test. 14.
Adjacent interference test 15.short-circuit withstand impact test
16. fire hazard test 17. power consumption test 18. protection
grade test 19. gripping strength test of grip structure. |
