DC 220V 110V 48V 24V Ground Fault Detector Locating And Alarming
System
Features
1. Cortex-M3 STM32 as Master chip, high integration high
anti-interference ability, high running speed, low power
dissipation
2.Menu operation with humanization design
3. All relative parameters can be set via menu, alarms all through
sound and light output or relative dry contact output
4. Can accurately measure DC voltage, module state, insulation, can
discriminate bus grounding and branch grounding, can display
grounding resistance, and detect grounding fault in two or more
branches.
5. Can test and monitor all branches grounding
6. Can make circle test of all the branches, or select one branch
to test
7. Store and display the latest 5 times bus insulation warning
records
8. Can test two sections bus ripple voltage and ripple coefficient
9. No consistence request or direction request to CT polarity
10. RS485 interface technology for signal sampling make the
effective transmission distance reaches 1000 meters
11. With RS232, RS485 communication interface for connecting with
external equipment
12. With 100M Ethernet interface
13. Fast branch testing
14. Can set AC sneaking in alarm threshold ( AC RMS)
15. Using real-time tracking information zero processing technology
to realize AC signal sneaking into DC fault test and alarm
16. Color screen with LCD self-protection function
17. With simple multi-machine connection function for complicated
multilevel DC system
18. Can real time measure power ripple, voltage, ripple coefficient
in all ranges. It also can effectively record the AC content in DC
power source.
Technique Parameters
1. Environment application: temperature -10℃~+55℃, humidity ≤90%
2. Atmosphere pressure: 80-110KPA
3. DC system voltage level: 220Vdc,110Vdc,48Vdc,24Vdc
4. Working voltage: AC/DC 85-265v
5. Bus sections: 2 pcs
6. Relay contact current: DC220V/3A
7. Bus voltage measuring accuracy: ±0.5%
8. Bus insulation resistance measuring accuracy: 0-5KΩ error 0.1KΩ,
5-50KΩ error≤5%, 50-100KΩ error≤10%
9. Relay operation alarm time: ≤2 seconds
10. Branch insulation resistance accuracy: 0.5-10KΩ error ≤15%,
10-25KΩ error ≤20%
11. AC sneaking-in voltage measuring range: 0-300V
12. AC sneaking in voltage measuring accuracy: ≤1%
13. Ripple measuring range: 0-100V
14. Ripple measuring accuracy: >1%
15. Instrument power dissipation: ≤30W
16. Weight: ≤8Kg
17. Dimension: 360×135×280mm
18. Sampling unit dimension: 155×95×43mm
