testo 755 · Current/voltage tester Instruction manual
1 Contents 1 Contents 1 Contents........................................................................ 2 2 Observe prior to use! ................................................... 3 3 Safety instructions ....................................................... 3 4 Intended use ................................................................. 3 5 Technical data .............................................................. 4 6 Overview ......................................................................
4 Intended use 2 Observe prior to use! • • • The instruction manual contains information and instructions which are necessary for operating and using the instrument safely. Before using the instrument, read the instruction manual carefully and comply with all aspects of it. Keep this document to hand so that you can refer to it when necessary. Forward this documentation to any subsequent users of the instrument.
5 Technical data 5 Technical data Voltage testing Figures correspond to +23 °C ± 5 °C at <80% rel. humidity. Temperature coefficient: 0.15 x specified accuracy per 1 °C (<18 °C and >28 °C). Feature Values Voltage range testo 755-1: 6 - 600 V AC/DC testo 755-2: 6 - 1000 V AC/DC Resolution 0.1 V Tolerance 6 to 49.9 V: ± (1.5% of the display value + 5 digits) 50 to 600 V / 1000 V: ± (1.
Technical data Current test Feature Values Voltage range Max. 200 A AC Frequency range 40 to 70 Hz Resolution Automatic power on 0.
Overview Feature Values Warranty Duration: 2 years Warranty terms: see website www.testo.com/warranty 6 Overview 6.1.
Operating the instrument Display Meaning Ω, kΩ Resistance in ohms or kilo-ohms Continuity Rotating magnetic field direction left or right , , Battery (full / empty) 6 7 8 9 10 Measuring point illumination, white LED Fork meter for conductor up to 12.9 mm (0.
Carrying out a test The measuring point illumination switches off automatically after 2 minutes. 7.3. Switching the instrument off Automatic If there is no voltage being applied to the probe tips and no current or continuity is detected, the instrument switches off automatically after 10 seconds. Manual Switch off instrument manually: press [HOLD] >2 s 8 Carrying out a test 8.1.
8 Carrying out a test - When the safety extra-low voltage is reached or exceeded (50 V AC / 120 V DC), an acoustic signal is emitted, the red LED comes on and is illuminated in the LC display. 8.3. Single pole phase testing (only testo 7552) Single pole phase testing is possible as from AC voltages of approx. 90 V. During single pole phase testing to determine external conductors, the display function may be impaired, for example due to insulating personal protective equipment or other insulators.
Protecting the environment 9 Service and maintenance 9.1. Replacing the batteries The batteries must be replaced when the battery icon is illuminated in the LC display. 1. Fully disconnect the instrument from the measurement object. 2. Using a screwdriver, unscrew the two metal screws on the battery compartment until the battery compartment cover can be removed. Do not unscrew the screws completely. 3. Remove the spent batteries. 4. Insert new batteries, type AAA / IEC LR03 (1.
0970 7550 en 03 V01.
