Tenmars YF-509 Insulation Tester

DC Voltage Measurement

Range Resolution Accuracy Input Impedance Overload Protection 0V to 1000V 1V ±(0.5% of rdg + 1dgt) 10MΩ DC 1000 AC 750Vrms

AC Voltage Measurement

Range Resolution Accuracy Input Impedance Overload Protection 0V to 750V 1V ±(0.8% of rdg + 4dgt) 10MΩ DC 1000 AC 750Vrms

Insulation Resistance

Resistance Range Resolution Accuracy Voltage Short Circuit Current 200 Megohms 0.1 Megohms ±(3% of rdg + 3dgt) 250 Volts 0.4mA max. 200 Megohms 0.1 Megohms ±(3% of rdg + 3dgt) 500 Volts 0.9mA max. 2000 Megohms 1 Megohm ±(3% of rdg + 5dgt) 1000 Volts 1.7mA max.

General Specifications Dimensions 160mm (L) x 100mm (W) x 52mm (D) Weight approx. 480g (including battery)

Ordering Information

Model Name Description Tenmars YF-509 Insulation Tester Included accessories: Battery, and Owner’s manual

BATTERY REPLACEMENT

The meter is powered by 1.5V battery x8pcs (NEDA 15F IEC R6 JIS UM-3). use the fowling procedure to replace the battery:

(1) Move the function switch to the “OFF” position.

(2) Use a screw driver to unfasten the screws on the battery cover and remove the cover.

(3) Take out the old batteries and replace with new batteries, taking care to note the correct polarity.

(4) Re-install the battery cover and tighten the holding screws.