DC 220V 110V 48V 24V Ground Fault Detector Locating And Alarming System

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