Besantek BST-GFL31, User Manual

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BST-GFL31 User Manual
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1. ABOUT BST-GFL31
1.1 BST-GFL31 Brief Information?
BST-GFL31 is BESANTEK’s new generation of ground fault locator applied with advanced technique
for earth fault detection. This patent-protected product is built based on years of field experience in
different DC systems. It specially deals with current leakage in DC system of high grounding resistance
below 1M
Ω . Without switching off the DC system, it pinpoints faulty grounding online where electrical
lines have breakage and current lost to the ground. It gives excellent solutions for troubleshooting and
preventative maintenance.
Compact and rugged design makes the BST-GFL31 easy to use in small places and harsh environment.
1.2 BST-GFL31 Main Functions
1.2.1 Ground Fault Location
With comprehensive ways including signal strength, phase change and precise judgment for leakage
current direction, it fast pinpoints ground fault.
Based on different distributing capacitance, it selects the right output frequency for testing, which
enables it to be widely used in different DC systems.
 Output voltage of signal generator:
selectable among 24V, 48V, 110V, 220V, 500V and 1000V. This will meet requirement for various
electric circuit of different voltage levels without interference to the circuit.
 Output current of signal generator:
5mA and unlimited current (limited power with max output current of 30mA). It is selected as per
different systems, preventing from incorrect operation of circuit relay.

Output frequency of signal generator: Standard 10Hz and with options of 1.0Hz, 50Hz, 60Hz and
325Hz which are selectable based on different DC systems.
1.2.2 Frequency Spectrum Analysis
It effectively analyzes the working signal and surrounding interferences signals of DC system. This will
help to select the right output frequency for ground fault location and avoid interference by the
surrounding signals.
1.2.3 Oscilloscope
It checks waveform of target signal.
1.3 Features
 Patented technology, pinpoint current leakage fault with grounding resistance lower than 1M Ω
 Innovative dual-clamp for signal receiver, each clamp has two sizes of opening jaw for different
conductors
 One pair of clamp working together, effective cancel capacitive interference when system is online
 Precise current direction (positive or reversed) indicating for leaking current help fast locate the
faulty grounding
 Adjustable output frequency on signal receiver effectively avoids interference from DC system itself