Gfci Leakage-Path (Vpc-31 Only); Overload-Alert Warning - Amprobe VPC-30 Manual De Uso

The tester needs > 7 seconds for the ACV "wake-up" measurement (also see
Auto Power on & Auto Power Off section). Wake up the tester by shorting the
two test probes together before making ACV measurements can improve the
"wake-up" delay.
Note: The voltage indicating LEDs are all powered by the internal batteries,
not by the system under test. The input impedance on voltage testing function
is as high as 460kΩ, and hence the influence of the measuring current on the
system under test is negligible. The peak occurring current IS at the highest
rated voltage 1000VAC is: /

GFCI Leakage-Path (VPC-31 only)

The tester equips with an GFCI Leakage-Path feature to load 120VAC/6mA GFCI
(Ground-Fault Circuit Interrupter) circuit breakers. An internal leakage load
path is provided when this feature is activated. Nominal load impedance is
16kΩ to provide typical leakage current of 7.5mA at 120VAC.
• Connect the tester to the receptacle under test by measuring the voltage
across L and PE (live conductor and a protective earth ground). The
tester should indicate proper line voltage level. (GFCI Leakage-Path
feature is disabled above 132V and below 80V.)
• With the proper line voltage level still indicating, press and hold the
GFCI button on the tester. The tester continuity/GFCI LED will turn on to
indicate the internal leakage load path is being connected.
• The LED will turn off when the GFCI circuit breaker trips (line voltage
is cut off). If a GFCI circuit breaker does not trip (within a fraction of a
second) under such a leakage load condition, it is pretty sure that the
breaker is not working properly or there is a wiring problem.
Note: This feature merely provides a handy leakage load path to load GFCI
circuit breakers. It is not intended to identify the effectiveness (trip current
and trip time etc as specified by the breaker manufacturers) of breakers even
though the breakers trip under the above mentioned leakage conditions.

Overload-Alert Warning

When the measured voltage exceeded 1000V AC or DC, the 1000V LED flashes.
The VPC-31 LCD also displays "OL". Disconnect the test probes from the signal
immediately to avoid hazards.
= 1000V x 1.414 / 460000Ω = 2.5mA
S
Refer to Fig.2
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