BST-GFL31 User Manual
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resistance become 0. Current value is around 2.7mA.
For testing of voltage, resistance and current, please refer to “2.4 Set Generator Output Signal”.
Note
: To ensure the security of equipment, please DO NOT output higher voltage for short-circuit.
3)
Check if signal receiver is normal
When signal generator is short-circuited, set the same receiving frequency in receiver (10Hz), set
frequency synchronization and set reference point.
Normally after frequency synchronization, phase angle and signal strength are pretty stable. After
reference setting, signal strength becomes 100%, phase angle is around 0° and current direction
will be . If current detector is clamp on the opposite direction, phase angle will become around
180° and direction will be reverse
.
4.2 FAQ
Item
Description
Causes
Solutions
1
Signal strength and
phase angle in signal
receiver sometimes is
high sometimes low
1. Signal display of signal
generator is set as
“Discontinue” mode.
Change it to “Continue” mode.
2. Signal is too weak
Increase the output voltage
somehow
3. There might be similar
frequencies around that
interferes the signal
Use frequency spectrum analyzing
function of signal receiver to test
surrounding signals and select the
right output frequency.
4. Opening jaw of current
detector is closed or the jaw
has dirt.
Close the jaw of current detector
and clean the clamp jaw.
5. Reference value is set
when it does not clamp in the
circuit that has current flow.
Clamp the current detector in the
circuit and make sure that the
signal generator is transmitting
signal properly, then set the
reference point.
2
In the same point,
signal receiver
shows steady signal
strength but phase
angle is increased or
decreased in certain
rate.
1. Frequency synchronization
is not done in the signal
receiver.
2. Current detector is not
kept stable during
frequency synchronization.
Redo “Frequency synchronization”
with current detector clamped on
red testing lead.
3
Relay maloperation
during ground fault
location
Red test lead is incorrectly
connected with busbar that
has normal insulation.
Connect it in the right busbar
4
Equipment works for
short time. Battery
power off pretty soon.
Not fully powered before
operation
1. Fully charge the signal generator
and receiver before using.
2. For long time operation, please
connect power adaptor with signal
generator.
Summary of Contents for BST-GFL31
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