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4.3 Testing phase and phase sequence
The MultiSafe DSP 4 is equipped with a triangular
LED display in order to perform phase and phase
sequence tests. These tests can be performed at a
nominal voltage of at least 165 V (50 Hz) to earth.
Attention! When performing these tests the device
must be hold closely at the handle bar of the device
(see picture below).
Note!
You may wear insulating gloves when perfor-
ming the tests.
Tests can be impaired by unfavourable locations,
for example on wooden ladders or insulating floor
coverings, as well as in improperly grounded a.c.
voltage systems.
4.3.1 Phase test
Determination of the outer conductor occurs by
applying the test probe (+L1) to the conductor.
When “POL” appears on the LCD and at the same
time the triangle in the display field lights up, then
conductor is live.
4.3.2 Testing phase sequence
The rotating field between two phases in a
grounded 230/400 V 3-phase system (up to max.
690/1200V) is determined by applying both test
probes and simultaneously grasping the device
parts, the way it is described in the following
section:
- Identify unipolar the outer conductors (see section
4.3.1).
- Apply both test probes to two outer conductors
(display: approx. 400 V).
- When phase L1 is applied to the test probe with
display (+L1) and when L2 is applied to the test
probe of the handle, then the triangle lights up in
a clockwise rotating field. When the triangle does
not light up, the direction of rotating field is
counterclockwise.
Note!
If 230 V instead of 400 V is displayed, the neu-
tral conductor may have been contacted. A simply
control of the test is possible when the test probes
are exchanged.
