Substation Secondary DC System Portable Grounding Error Detector

(1) Can measure the system's positive to ground voltage, system voltage, and voltage monitoring range 0-300V;
(2) It can measure the insulation impedance of the system to ground, detect the size of the balance bridge, and have a detection range of 0-999.9K Ω;
(3) It can measure the AC voltage component that enters the DC system, with a measurement range of 0-280V;
(4) It can measure and display the distributed capacitance of the system in real-time.
(5) It can detect various ring network faults in two bus sections, including positive and negative rings, bipolar rings, and heteropolar rings, and can locate the ring network fault point through waveform display and directional display;
(6) The device can achieve the detection and positioning of high resistance ring network faults through amplitude modulation, frequency modulation, current waveform selection, etc.
(7) It can measure the insulation impedance of each branch to ground, and locate insulation fault points through waveform display and direction display;
(8) Equipped with spectrum analysis function for current changes based on fast FFT transformation technology, efficient sampling, and improved detection accuracy;
(9) The device can be used as a high-precision ammeter, with a measurement resolution of up to 0.01mA;
(10) The equipment can automatically identify the system voltage level and determine the category of ring network faults;
 

Technical parameters of the detector