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2. PRODUCT SPECIFIC SAFETY INFORMATION
Measurement Category III (CAT III) is applicable to test and
measuring equipment connected to the distribution part of the
building's low-voltage MAINS installation.
Measurement Category IV (CAT IV) is applicable to test and
measuring equipment connected at the source of the building's low-
voltage MAINS installation.
2.1 Precautions
This product has been designed with your safety in mind, but please
pay attention to the following warnings and cautions before use.
Warning
Before use check the unit for cracks or any other damage. Make sure
the unit is free from dust, grease and moisture. Also check any
associated leads and accessories for damage. Do not use if damaged.
Warning
Do not use if the battery/fuse cover is not fitted.
Warning
Always test this unit on an appropriate proving device or known
voltage source before and after using it to determine if a hazardous
voltage exists in a circuit to be tested. See 3.6.
Warning
When using the sensor clips, always keep your fingers behind the
finger guards.
Warning
If one or more phase live LED's do not illuminate, this does not
necessarily mean the phase or phases suspected of being open or
3.2 Low Battery Indication
If the ON LED flashes when the unit is turned on, the batteries are
low and need to be replaced (see section 4.1 battery replacement).
3.3 Auto Power Off
If the PSI4000/PSI4300 is inactive for a period of approximately 5
minutes it will automatically power down.
3.4 Enhanced Brightness
Press the
button to increase the brightness of the LED's when
using the PSI4000/PSI4300 in strong ambient light.
2
Green central phase sequence
L1, L2, L3 LED
Anti-clockwise arrow green
LED's
(lit in rotating sequence)
Phase live LED's, related to
L1, L2, L3 sensor clips
Instrument power "ON" LED
(flashes if battery low)
Instrument ON/OFF switch
Enhanced brightness switch
(for strong ambient light)
Red central phase sequence
L1, L3 ,L2 LED
Clockwise arrow red LED's
(lit in rotating sequence)
4
missing are actually dead. The phase to earth voltage of the
suspected phase could be < 75V, or two or all three sensor clips
could be sensing the same phase, thereby giving incorrect test
indications.
Caution
Avoid severe mechanical shock or vibration and extreme
temperature.
Caution
Remove the batteries when not in use for an extended period, to
avoid corrosion from leaking batteries.
3. OPERATION
3.1 Description of Press Buttons and Indicators
3
3.5 Testing Considerations
The following considerations should be observed when using the
PSI4000 / PSI4300:
N
Incorrect phase live test indications will be obtained if two or three
sensors are connected to the same phase. The L1, L2 and L3
LED's will only illuminate simultaneously if the sensors are
connected to 3 separate phases, with phase to earth voltages ≥75V.
N
Touching the sensor clips during testing may give incorrect test
indications.
N
Incorrect test indications may be obtained if the sensor clips are
attached near to a charged body or equipment generating
electromagnetic waves.
N
The specified conductor size for testing is between 2.4mm and
30mm diameter. Testing conductors outside of this range may give
incorrect test indications.
N
Test indications may be influenced by other nearby cables with a
voltage magnitude that is double or greater than the voltage
magnitude of the cables being tested. The sensor clips should be
attached as far from such cables as possible.
N
Correct wiring status cannot be correctly identified when an earth
line is connected between phases via delta connection. Check the
connection specification of the 3 phase distribution system being
tested.
N
Cannot be used to test bus bars or metal shielded cables.
N
Do not pull the sensor clip wires to remove the sensor clips from the
cables under test. This may break or damage the sensor clip wires.
3.6 Proving Check
Before and after use, prove the function of the PSI4000 / PSI4300
by performing steps 1 to 4 below:
1. Press the
button to turn on the instrument. During the power
up sequence, all of the LED's will illuminate briefly.
2. If any of the LED's do not flash during the power-up sequence, do
5
not use the instrument.
Green central phase sequence
L1, L2, L3 LED
Clockwise arrow green LED's
(lit in rotating sequence)
Phase live LED's, related to
L1, L2, L3 sensor clips
Instrument power "ON" LED
(flashes if battery low)
Instrument ON/OFF switch
Enhanced brightness switch
(for strong ambient light)
Red central phase sequence
L1, L3, L2 LED
Anti-clockwise arrow red LED's
(lit in rotating sequence)
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