BST-GFL31 User Manual
23
f: recommended grounding location frequency (unit: Hz)
；
R
：
Grounding resistance (unit:
Ω
)
；
C
：
Distributed capacitance in the circuit (unit: F)
In actual detection of grounding malfunction, the circuit has grounding resistance and distributed
capacitance. Distributed capacitance current and resistance current have 90°difference for phase angle.
Current signal in the circuit is composed of distributed capacitance current and resistance current. Their
directions are as below:
Resistance current: Flow from signal generator output terminal (testing lead) to DC circuit and finally out
flow from the grounding point.
Distributed capacitance current: Flow from signal generator output terminal (testing lead) to DC circuit
and finally out flow to the earth from different points of circuit in the way of distributed capacitance
current.
3. OTHER SETTINGS OF GENERATOR AND RECEIVER
3.1 Signal Generator Setting
3.1.1 Set Date & Time
Select “Time” in main menu, you will see the screen as below. Please use arrow keys to change date
and clock. Then click Save to confirm the change.
Fig 3.1.1
3.1.2 Parameter Setting
This enables users to select the program between basic version and professional version. To simplify the
operation, default setting of all BST-GFL31 units is basic version with working frequency of 10Hz. In
professional version, users can have different selection for output frequency.
Note:
Once you change the output frequency in the signal generator, please make sure to do frequency
synchronization in signal receiver as per “3.2.3.1 Frequency synchronization”.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
Summary of Contents for BST-GFL31
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