The GFM-300AC is designed for testing where very high currents are needed to judge connection resistance. The front panel allows adjustment of the AC current up to 300A with a max load of 0.010Ω. The dual digital meter front panel simultaneously displays both current through and voltage across the grounding circuit of the unit under test. Provided with premium leads and alligators, manual and calibration certificate.

Built in the USA. Email and phone support free for life. Reasonable repair and calibration charges. Timely and helpful customer service always.
   

ITEM	NAME	FUNCTION
1	Output Breaker Switch	The Output Switch enables the outputs thru the leads. Always turn the knob to the minimum before switching to ON position.
2	Knob – Output Adjustment	The large knob facilitates the increase or decrease of current output. Always turn the knob to the minimum before switching the output to ON.
3	Current Digital Meter	The Current Digital Meter displays the current that is flowing thru the output leads. A Red flashing backlight alarm is activated when exceeding 305A.
4	Voltage Digital Meter	The Voltage Digital Meter displays the voltage that is between the output leads clamps.

   

ITEM	NAME	FUNCTION
1	AC Input	Use supplied cordset to connect the GFM-300A-DM tester to an appropriate source of supply.
2	Fuse	Fuse holder provides access for Fuse replacement.
3	Power Switch	I to turn on the tester, make sure output switch on the front panel is OFF, otherwise the tester output will be enable. O to turn tester off.
4	Output	Tester Output, the panel strain relief secures the tester output leads, do not attempt o loose de leads, always use the provided leads and clamps to test.