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4. Testing voltage
Do not touch the water or objects protruding into the water (e.g. banisters)!
These parts can be live! Do not touch the water even after it has been determined to be
free of voltage! Dangers can arise at any time due to changing water levels.
4.1 Display
Note:
If the yellow Err LED lights up and „Err“ is shown in the display, the test must be stopped immediately.
The DSP-HW 2 is equipped with internal error monitoring. This monitors the measuring electronics, the
software and the battery status during the test. Check the battery and repeat the self-test.
If operational readiness is not displayed, the DSP-HW 2 must not be used.
4.2 Safe testing area
The safe test area of the DSP-HW 2 is 1 m spherical from the ball electrode.
Work may only be carried out within this tested area.
LEDs off
green LEDs flash
red LEDs lights up
Standby
No voltage present
Water has ground potential
Voltage present!
limiting mark outside of the water
The limiting mark (red) must not be sunk
into the water!
The safe test area is marked by a red
limiting mark. This must be visible
outside of the water.
red limiting mark
water level
ball electrode
1m
