Application cases

7305 Program controlled grounding resistance tester

Product features:

● The current output range of 7305 grounding impedance tester is 3-30A

● Built in special linear constant current output amplification circuit

● LCD16x2 dot matrix with backlight display

● Built in 5 groups of program memory

● Front panel software input correction

● Built in PLC remote control interface

● Power on self-test function, which can check whether various functions of the instrument are normal before testing

● Test the self zeroing and adjustment function of line impedance to ensure the calibration of the test

● 7305 single machine can be connected with 71 series (7110/7112/7120/7122) AC/DC withstand voltage/insulation tester



Specifications:
model
seven thousand three hundred and five
Input terminal
Input power
110/220 Vac ± 10% ; 50/60 Hz ± 5%
Grounding resistance test
Output current
3 - 30A± (2% Setting +2 counts)
output voltage
Maximum AC voltage 6V
Output frequency
50Hz/60Hz selectable& plusmn; 100ppm
Grounding resistance
0 - 510mΩ; 1mΩ/ Step& plusmn; (2% Setting +2counts)
Resistance upper/lower limit setting
0-510mΩ (3.0-10.0A); 0-120mΩ (10.1-30.0A); 1mΩ/ Step
Measurement accuracy
± （2%Setting＋2mΩ）
Test time setting
0, 0.5 - 999.9s (0=continuous test); 0.1s/step& plusmn; (0.1% + 0.05sec)
General specifications
Remote control
Input signal: start, stop, withstand voltage test
Output signal: qualified, failed, under test, reset trigger, start trigger
Memory group
5 groups of memory
Display mode
16× 2 LCD
Keyboard lock
Prevent unauthorized personnel from entering parameter setting
Correction method
It can be input through the front panel and corrected by software
work environment
0-40℃, 20-80%RH
Dimensions (W x H x D, mm)
280 × 89 × three hundred and seventy
Net weight
10Kg