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GFM100 GF-GC Monitor

GFM100 GF-GC Monitor

Monitor ground faults in ground resistance systems, such as continuous detection of trailing cable in ships, mines, etc.
Description
GFM100 ground fault ground check monitor (GF-GC monitor) is a professional device designed to solve grounding problems in industries such as industrial manufacturing, energy and power, data centers and smart grids. In industrial manufacturing fields such as chemical, metallurgical, and mechanical, as well as energy and power scenarios such as substations and distribution networks, it can accurately detect grounding faults in resistance grounding systems and effectively monitor loop integrity, effectively solving key problems such as slow response to grounding faults, detection failure caused by environmental interference, and difficulty in troubleshooting hidden defects in grounding loops in the industry, effectively ensuring the safe and stable operation of the power system and significantly reducing the risk of equipment damage and production interruption.

GFM100 Ground Fault Monitor Features:
  1. GFM100 uses advanced detection technology and intelligent algorithms:
  2. Ground fault detection: Capture the fundamental frequency zero-sequence current through the window current sensor, automatically check the sensor connection status and short circuit condition, and achieve reliable detection.
  3. Ground detection circuit: With 30VDC safe open circuit voltage and >100mA output drive current, the accuracy and stability of ground loop detection are ensured through external replaceable detection fuses, resistance insertion test and other designs.
  4. Core architecture: Based on the microprocessor, fast data processing and analysis are realized, providing accurate judgment basis for ground fault and loop detection.

GFM100 System Composition
  • GFM100 Ground Fault and Loop Detection Module: Real time zero sequence current monitoring through current sensors. Supports 11 level adjustable trip thresholds (0.5 50 A) and 11 step definite time delays (0.1 2.5 s) for selective protection. Adopts a 30 VDC safety voltage to measure loop resistance, with short circuit / open circuit detection capability;
  • CT Zero Sequence Current Sensor: Real time acquisition of zero sequence current signals;
  • GF12 Zener Terminal Module: Constructing grounding detection terminal circuit nodes.

GFM100 Ground Fault Monitor Specification:
Item Parameters Noted
Power Supply AC 120-240V (50/60Hz)  or 
DC 110-250V		  
Tripping threshold CT10: 0.5-12.5A 
CT40: 2-50A		 11 levels adjustable
Tripping delay 0.1-2.5 Seconds 11-segment definite time
Ground detection voltage 30 VDC Safety voltage level
Loop Current >100mA  
Communication interface Modbus RTU/TCP  
Protection level IP40 Panel Mount
Communication RS485  
Relay output 250VAC/5A  
Switch input One set  
Switch output One set  
Working temperature -40℃~60℃  
Storage temperature -55℃~80℃  
Relative humidity 85% (No condensation)  

 
Focusing on production and sales of insulation monitoring, insulation fault locator, residual current monitor etc. Obtained ISO 9001, IEC 61326 and IEC 61557 certifications
Focusing on production and sales of insulation monitoring, insulation fault locator, residual current monitor etc.
Obtained ISO 9001, IEC 61326 and IEC 61557 certifications

Email：info@sikcon.com

Address：Guangzhou, Guangdong Province, China