G
SAFETY WARNINGS
Safety warnings must be read and understood before instrument is used.
The following safety information must be observed to insure maximum
personal safety during the operation of this instrument:
■
Do not use in wet environments.
■
It is recommended that wherever possible isolate the
circuit to be tested while connecting and disconnecting test leads.
■
Test leads and prods must be in good order, clean, and with
no broken or cracked insulation.
■
Replacement test lead fuses must be of the correct
type and rating.
■
This instrument must not be used if any part of it is damaged.
■
The unit is for intermittent tests only, it must not be used for
continuous monitoring of phase rotation.
■
Warnings and precautions must be read and understood before
an instrument is used. They must be observed during the
operation of this instrument.
Note: This instrument must only be used by suitably trained and
competent persons
INTRODUCTION
The Megger PSI410 phase rotation indicator provides rapid indication of cor-
rect phase sequence utilising a three dual coloured sequencing LED display
and a specific audible tone.
To avoid the display rotating at the supply frequency the unit has been
designed to provide a slow rotational speed of the display to allow easy
indication of rotation.
Dual phase colour coding has been adopted for the PSI410 to allow ease
of use on both Brown / Black / Grey and Red / Yellow / Blue colour coded
supplies.
The PSI410 also features a triple dual coloured LED display that indicates that
all three phases are present.
INSTRUCTIONS
As both croc clips and prods are supplied with the unit, select the preferred
method of the connection and connect to the test leads. The croc clip option
will allow isolation of the supply during connecting and disconnecting the
test leads.
The dual coloured LED display at the top of the PSI410 indicates the state
of each of the connected phases with a green coloured LED indicating
the phase is present while a red coloured LED shows a missing phase
connection. This feature enables a graphic display of a good connection
when using the test prod option and will indicate a phase which has a
substantial lower voltage than the other two phases.
Connect the test leads following the circuit’s applicable cable colour code
and once all three phases are connected observe the direction of rotation
and colour on the sequencing LED display on the PSI410.
Clockwise rotation is indicated by clockwise rotating green LEDs with a
continuous tone and counter clockwise rotation has counter clockwise
