DC grounding inspection and protection misoperation analysis tester

HN7127DC grounding inspection and protection misoperation analysis tester

1．The device has a balanced bridge detection function, through which users can detect the positive ground insulation resistance, negative ground insulation resistance, and balanced bridge size of the tested device or DC system;

2．The device has a system anti distributed capacitance testing function, and users can freely combine and set the positive grounding impedance, negative grounding impedance, positive to ground distributed capacitance, and negative to ground distributed capacitance of the system;

3．The device has a branch anti distributed capacitance testing function, and users can freely combine and set the positive pole grounding impedance, negative pole grounding impedance, positive pole to ground distributed capacitance, and negative pole to ground distributed capacitance of the branch;

4．The device has signal analysis function, and for equipment that requires grounding detection through signal transmission, it canstraightGrounding inspection and protection misoperation analysis testerAnalyze the signal amplitude, frequency, power and other parameters of the tested device through this function.

The device has a bridge safety detection function, through which users can determine whether the bridge is safe based on the ratio of the negative to ground voltage and the positive to ground voltage of the tested device.

1．Usage environment

a)Working power supply:AC220V±15%

b)Ambient temperature-20℃—45℃

c)Relative humidity:0—90%

2．Controllable DC power supply parameters

a)DC power output:0-280VConfigurable

b)Voltage output control accuracy:0.5%

c)The maximum output current is1.2A

3．AC power supply parameters

a)Output voltage level: AC110V，AC50V

4．straightGrounding inspection and protection misoperation analysis testerDC voltage measurement

a)Resolution of DC voltage measurement:0.1V

b)Accuracy of direct to ground voltage measurement:

0-100V <1%

100V-280V <0.5%

c)Measurement accuracy of negative to ground voltage:

0-100V <1%

100V-280V <0.5%

d)System voltage measurement accuracy:

0-100V <1%

100V-280V <0.5%

5．Positive and negative insulation resistance parameters

a)Adjustable range of positive and negative pole pair insulation resistance:0—255kΩ

b)Positive and negative pole insulation resistance adjustment step size:1kΩ

6．Distributed capacitance parameters of branch positive and negative poles to ground

a)Adjustable range of distributed capacitance for branch positive and negative poles:0—31uF

b)Adjustment step size of distributed capacitance for branch positive and negative poles:1uF

7．System positive and negative pole to ground distributed capacitance parameters

a)Adjustable range of distributed capacitance between positive and negative poles of the system:0—110uF

b)Adjustment step size of distributed capacitance for positive and negative poles of the system:10uF

8．Test setting parameters

a)Number of selectable test point groups:1—5group

b)The testing time interval can be set within the following range:5—999S(seconds)

c)The testing time can be set within the following range:5—999S(seconds)

9. Signal comprehensive testing parameters

a)Signal amplitude:0-110V

b）Signal frequency:0.24Hz-50Hz