GF-III leakage protection switch tester measurement methods and procedures 1. Press the red at the top right of the "On / Off" button to turn on the instrument working power, 15mA red indicator lights in the upper left, just above the LCD screen Display MANUAL 000ms (Note: MANUAL = manual). 2. See GFCI test calibration values ??on the nameplate (general indoor single-phase two-wire leakage protection device rated operating current = 300mA), rated non-operating current = 15mA, breaking time <= 0.1S (ie <= 100mS) 3. point pressure "Shift" button on the left vertical line of a row of 10 red LEDs from top to bottom circulation electric light, 30mA files transferred as described above, corresponding to the red light flashes. 4. Test table inside the red plug stick into the "test line" sitting on a red, black plug into the "ground" the black seat, black plug the other end of the line is black alligator clip, clip it to be tested leakage protection on the ground next to the pile gripper. 5. The red plug wire test table bar table the other end of the pen to touch leakage protection under the pile head corresponding FireWire (200V), this time, the normal leakage protection will trip breaking, this time just above the LCD display MANUAL xxxms (Note: MANUAL = manual, xxx-off time value is the measured leakage protection points), if not tripped, the LCD screen will display MANUAL FAULT (FAULT = failure) 6. Check that the measured data are consistent with values ??specified on the nameplate. 7 Press the "Reset" green button, meter data to zero, enter the boot original state, ready for the next test, if continuous testing, repeat the 1-7 items. GF-III leakage protection switch tester automatically detects the instrument has a "manual / automatic" switching button, just above the LCD display AUTO 000ms (AUTO = automatic) is the automatic detection, when using the "shift" button is selected The nominal value of the test action, if not a trip, will automatically increase the value of a stall test continuous test for 1 second, until leakage protection tripping breaking. The left side of this vertical red lights, it corresponds to the actual position is leakage current value, just above the LCD display AUTO xxxms (xxx is the time value corresponding to the current position of the operation). GF-III leakage protection switch tester Caution 1. "Test line" and "ground" must not be wrong, and red to red then 220V (FireWire), black on black ground pile, sometimes loose ground piles (ground bad) will cause the test fails, please pay attention to distinguish! 2. When you open "on / off" button, if found lights dim, the LCD character display light may be insufficient or no battery caused this instrument in the back with a Phillips screwdriver to remove the battery cover and replace the same type of battery. 3. In use, portable process should be gently, without a strong jolt, vibration, drop collision, and should prevent the erosion of chemical reactants. Leakage protection action current, leakage current, and no action leakage action time, GF-III test current leakage protection switch tester mainly used to test leakage protection for 0-500mA divided into ten stalls, time test range 0-799ms, 16 位character LCD, the tester is a handheld, small size, light weight, easy to carry, a variety of leakage protection field and laboratory testing best test instruments. Source: http: //www.gyceshiyi.com/guan58-ParentList-376921/ leakage protection switch tester